mirror of
https://gitee.com/element-plus/element-plus.git
synced 2024-12-14 17:31:02 +08:00
d55ca77137
* fix(input): input maxlength calculate the correct length * docs(input): Update maxlength comment * fix(input): format code and remove upperLimit calculated attributes * fix(input): props.maxlength is converted to number type * docs(input): modify maxlength type
715 lines
20 KiB
Markdown
715 lines
20 KiB
Markdown
## Input
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Input data using mouse or keyboard.
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:::warning
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Input is a controlled component, it **always shows Vue binding value**.
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Under normal circumstances, `input` event should be handled. Its handler should update component's binding value (or use `v-model`). Otherwise, input box's value will not change.
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Do not support `v-model` modifiers.
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:::
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### Basic usage
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:::demo
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```html
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<el-input placeholder="Please input" v-model="input"></el-input>
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<script>
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import { defineComponent, ref } from 'vue'
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export default defineComponent ({
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setup() {
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return {
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input: ref('')
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}
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}
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})
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</script>
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```
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:::
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### Disabled
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:::demo Disable the Input with the `disabled` attribute.
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```html
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<el-input
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placeholder="Please input"
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v-model="input"
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:disabled="true">
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</el-input>
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<script>
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import { defineComponent, ref } from 'vue'
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export default defineComponent ({
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setup() {
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return {
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input: ref('')
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}
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}
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})
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</script>
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```
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:::
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### Clearable
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:::demo Make the Input clearable with the `clearable` attribute.
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```html
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<el-input
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placeholder="Please input"
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v-model="input"
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clearable>
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</el-input>
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<script>
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import { defineComponent, ref } from 'vue'
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export default defineComponent ({
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setup() {
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return {
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input: ref('')
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}
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}
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})
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</script>
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```
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:::
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### Password box
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:::demo Make a toggleable password Input with the `show-password` attribute.
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```html
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<el-input placeholder="Please input password" v-model="input" show-password></el-input>
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<script>
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import { defineComponent, ref } from 'vue'
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export default defineComponent ({
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setup() {
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return {
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input: ref('')
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}
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}
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})
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</script>
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```
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:::
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### Input with icon
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Add an icon to indicate input type.
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:::demo To add icons in Input, you can simply use `prefix-icon` and `suffix-icon` attributes. Also, the `prefix` and `suffix` named slots works as well.
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```html
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<div class="demo-input-suffix">
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<span class="demo-input-label">Using attributes</span>
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<el-input
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placeholder="Pick a date"
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suffix-icon="el-icon-date"
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v-model="input1">
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</el-input>
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<el-input
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placeholder="Type something"
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prefix-icon="el-icon-search"
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v-model="input2">
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</el-input>
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</div>
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<div class="demo-input-suffix">
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<span class="demo-input-label">Using slots</span>
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<el-input
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placeholder="Pick a date"
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v-model="input3">
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<template #suffix>
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<i class="el-input__icon el-icon-date"></i>
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</template>
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</el-input>
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<el-input
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placeholder="Type something"
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v-model="input4">
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<template #prefix>
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<i class="el-input__icon el-icon-search"></i>
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</template>
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</el-input>
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</div>
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<style>
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.demo-input-label {
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display: inline-block;
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width: 130px;
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}
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</style>
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<script>
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import { defineComponent, ref } from 'vue'
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export default defineComponent ({
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setup() {
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return {
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input1: ref(''),
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input2: ref(''),
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input3: ref(''),
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input4: ref('')
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}
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}
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})
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</script>
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```
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:::
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### Textarea
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Resizable for entering multiple lines of text information. Add attribute `type="textarea"` to change `input` into native `textarea`.
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:::demo Control the height by setting the `rows` prop.
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```html
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<el-input
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type="textarea"
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:rows="2"
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placeholder="Please input"
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v-model="textarea">
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</el-input>
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<script>
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import { defineComponent, ref } from 'vue'
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export default defineComponent ({
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setup() {
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return {
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textarea: ref('')
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}
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}
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})
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</script>
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```
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:::
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### Autosize Textarea
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Setting the `autosize` prop for a textarea type of Input makes the height to automatically adjust based on the content. An options object can be provided to `autosize` to specify the minimum and maximum number of lines the textarea can automatically adjust.
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:::demo
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```html
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<el-input
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type="textarea"
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autosize
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placeholder="Please input"
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v-model="textarea1">
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</el-input>
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<div style="margin: 20px 0;"></div>
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<el-input
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type="textarea"
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:autosize="{ minRows: 2, maxRows: 4}"
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placeholder="Please input"
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v-model="textarea2">
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</el-input>
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<script>
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import { defineComponent, ref } from 'vue'
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export default defineComponent ({
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setup() {
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return {
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textarea1: ref(''),
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textarea2: ref('')
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}
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}
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})
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</script>
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```
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:::
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### Mixed input
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Prepend or append an element, generally a label or a button.
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:::demo Use `slot` to distribute elements that prepend or append to Input.
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```html
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<div>
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<el-input placeholder="Please input" v-model="input1">
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<template #prepend>Http://</template>
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</el-input>
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</div>
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<div style="margin-top: 15px;">
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<el-input placeholder="Please input" v-model="input2">
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<template #append>.com</template>
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</el-input>
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</div>
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<div style="margin-top: 15px;">
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<el-input placeholder="Please input" v-model="input3" class="input-with-select">
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<template #prepend>
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<el-select v-model="select" placeholder="Select">
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<el-option label="Restaurant" value="1"></el-option>
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<el-option label="Order No." value="2"></el-option>
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<el-option label="Tel" value="3"></el-option>
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</el-select>
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</template>
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<template #append>
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<el-button icon="el-icon-search"></el-button>
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</template>
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</el-input>
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</div>
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<style>
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.el-select .el-input {
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width: 110px;
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}
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.input-with-select .el-input-group__prepend {
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background-color: #fff;
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}
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</style>
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<script>
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import { defineComponent, ref } from 'vue'
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export default defineComponent ({
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setup() {
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return {
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input1: ref(''),
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input2: ref(''),
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input3: ref(''),
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select: ref('')
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}
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}
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})
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</script>
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```
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:::
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### Sizes
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:::demo Add `size` attribute to change the size of Input. In addition to the default size, there are three other options: `large`, `small` and `mini`.
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```html
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<div class="demo-input-size">
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<el-input
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placeholder="Please Input"
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v-model="input1">
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</el-input>
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<el-input
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size="medium"
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placeholder="Please Input"
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v-model="input2">
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</el-input>
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<el-input
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size="small"
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placeholder="Please Input"
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v-model="input3">
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</el-input>
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<el-input
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size="mini"
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placeholder="Please Input"
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v-model="input4">
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</el-input>
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</div>
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<script>
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import { defineComponent, ref } from 'vue'
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export default defineComponent ({
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setup() {
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return {
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input1: ref(''),
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input2: ref(''),
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input3: ref(''),
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input4: ref('')
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}
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}
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})
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</script>
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```
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:::
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### Autocomplete
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You can get some recommended tips based on the current input.
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:::demo Autocomplete component provides input suggestions. The `fetch-suggestions` attribute is a method that returns suggested input. In this example, `querySearch(queryString, cb)` returns suggestions to Autocomplete via `cb(data)` when suggestions are ready.
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```html
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<el-row class="demo-autocomplete">
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<el-col :span="12">
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<div class="sub-title">list suggestions when activated</div>
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<el-autocomplete
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class="inline-input"
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v-model="state1"
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:fetch-suggestions="querySearch"
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placeholder="Please Input"
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@select="handleSelect"
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></el-autocomplete>
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</el-col>
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<el-col :span="12">
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<div class="sub-title">list suggestions on input</div>
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<el-autocomplete
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class="inline-input"
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v-model="state2"
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:fetch-suggestions="querySearch"
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placeholder="Please Input"
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:trigger-on-focus="false"
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@select="handleSelect"
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></el-autocomplete>
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</el-col>
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</el-row>
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<script>
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import { defineComponent, ref, onMounted } from 'vue'
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export default defineComponent({
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setup() {
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const restaurants = ref([]);
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const querySearch = (queryString, cb) => {
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var results = queryString
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? restaurants.value.filter(createFilter(queryString))
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: restaurants.value;
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// call callback function to return suggestions
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cb(results);
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};
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const createFilter = (queryString) => {
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return (restaurant) => {
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return (
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restaurant.value.toLowerCase().indexOf(queryString.toLowerCase()) ===
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0
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);
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};
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};
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const loadAll = () => {
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return [
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{ "value": "vue", "link": "https://github.com/vuejs/vue" },
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{ "value": "element", "link": "https://github.com/ElemeFE/element" },
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{ "value": "cooking", "link": "https://github.com/ElemeFE/cooking" },
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{ "value": "mint-ui", "link": "https://github.com/ElemeFE/mint-ui" },
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{ "value": "vuex", "link": "https://github.com/vuejs/vuex" },
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{ "value": "vue-router", "link": "https://github.com/vuejs/vue-router" },
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{ "value": "babel", "link": "https://github.com/babel/babel" }
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];
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};
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const handleSelect = (item) => {
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console.log(item);
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};
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onMounted(() => {
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restaurants.value = loadAll();
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});
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return {
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restaurants,
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state1: ref(''),
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state2: ref(''),
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querySearch,
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createFilter,
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loadAll,
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handleSelect,
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};
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},
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});
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</script>
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```
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:::
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### Custom template
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Customize how suggestions are displayed.
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:::demo Use `scoped slot` to customize suggestion items. In the scope, you can access the suggestion object via the `item` key.
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```html
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<el-autocomplete
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popper-class="my-autocomplete"
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v-model="state"
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:fetch-suggestions="querySearch"
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placeholder="Please input"
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@select="handleSelect"
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>
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<template #suffix>
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<i class="el-icon-edit el-input__icon" @click="handleIconClick"></i>
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</template>
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<template #default="{ item }">
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<div class="value">{{ item.value }}</div>
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<span class="link">{{ item.link }}</span>
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</template>
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</el-autocomplete>
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<style>
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.my-autocomplete li {
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line-height: normal;
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padding: 7px;
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}
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.my-autocomplete li .name {
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text-overflow: ellipsis;
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overflow: hidden;
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}
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.my-autocomplete li .addr {
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font-size: 12px;
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color: #b4b4b4;
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}
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.my-autocomplete li .highlighted .addr {
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color: #ddd;
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}
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</style>
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<script>
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import { defineComponent, ref, onMounted } from 'vue'
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export default defineComponent({
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setup() {
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const links = ref([]);
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const querySearch = (queryString, cb) => {
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var results = queryString
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? links.value.filter(createFilter(queryString))
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: links.value;
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// call callback function to return suggestion objects
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cb(results);
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};
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const createFilter = (queryString) => {
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return (restaurant) => {
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return (
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restaurant.value.toLowerCase().indexOf(queryString.toLowerCase()) ===
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0
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);
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};
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};
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const loadAll = () => {
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return [
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{ "value": "vue", "link": "https://github.com/vuejs/vue" },
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{ "value": "element", "link": "https://github.com/ElemeFE/element" },
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{ "value": "cooking", "link": "https://github.com/ElemeFE/cooking" },
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{ "value": "mint-ui", "link": "https://github.com/ElemeFE/mint-ui" },
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{ "value": "vuex", "link": "https://github.com/vuejs/vuex" },
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{ "value": "vue-router", "link": "https://github.com/vuejs/vue-router" },
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{ "value": "babel", "link": "https://github.com/babel/babel" }
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];
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};
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const handleSelect = (item) => {
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console.log(item);
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};
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const handleIconClick = (ev) => {
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console.log(ev);
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};
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onMounted(() => {
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links.value = loadAll();
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});
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return {
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links,
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state: ref(''),
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querySearch,
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createFilter,
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loadAll,
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handleSelect,
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handleIconClick,
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};
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},
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});
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</script>
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```
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:::
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### Remote search
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Search data from server-side.
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:::demo
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```html
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<el-autocomplete
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v-model="state"
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:fetch-suggestions="querySearchAsync"
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placeholder="Please input"
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@select="handleSelect"
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></el-autocomplete>
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<script>
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import { defineComponent, ref, onMounted } from 'vue'
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export default defineComponent({
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setup() {
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const links = ref([]);
|
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const loadAll = () => {
|
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return [
|
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{ "value": "vue", "link": "https://github.com/vuejs/vue" },
|
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{ "value": "element", "link": "https://github.com/ElemeFE/element" },
|
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{ "value": "cooking", "link": "https://github.com/ElemeFE/cooking" },
|
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{ "value": "mint-ui", "link": "https://github.com/ElemeFE/mint-ui" },
|
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{ "value": "vuex", "link": "https://github.com/vuejs/vuex" },
|
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{ "value": "vue-router", "link": "https://github.com/vuejs/vue-router" },
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{ "value": "babel", "link": "https://github.com/babel/babel" }
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];
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};
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let timeout;
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const querySearchAsync = (queryString, cb) => {
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var results = queryString
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? links.value.filter(createFilter(queryString))
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: links.value;
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clearTimeout(timeout);
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timeout = setTimeout(() => {
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cb(results);
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}, 3000 * Math.random());
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};
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const createFilter = (queryString) => {
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return (restaurant) => {
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return (
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restaurant.value.toLowerCase().indexOf(queryString.toLowerCase()) ===
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0
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);
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};
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};
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const handleSelect = (item) => {
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console.log(item);
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};
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onMounted(() => {
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links.value = loadAll();
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});
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return {
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links,
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state: ref(''),
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querySearchAsync,
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createFilter,
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loadAll,
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handleSelect
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};
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},
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});
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</script>
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```
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:::
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### Limit length
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:::demo `maxlength` and `minlength` attributes of input, they declare a limit on the number of characters a user can input. The "number of characters" is measured using JavaScript string length.Setting the `maxlength` prop for a text or textarea type of Input can limit the length of input value, allows you to show word count by setting `show-word-limit` to `true` at the same time.
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|
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```html
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<el-input
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type="text"
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placeholder="Please input"
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v-model="text"
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maxlength="10"
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show-word-limit
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>
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</el-input>
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<div style="margin: 20px 0;"></div>
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<el-input
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type="textarea"
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placeholder="Please input"
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v-model="textarea"
|
||
maxlength="30"
|
||
show-word-limit
|
||
>
|
||
</el-input>
|
||
|
||
<script>
|
||
import { defineComponent, ref } from 'vue'
|
||
export default defineComponent ({
|
||
setup() {
|
||
return {
|
||
text: ref(''),
|
||
textarea: ref('')
|
||
}
|
||
}
|
||
})
|
||
</script>
|
||
```
|
||
:::
|
||
|
||
### Input Attributes
|
||
|
||
| Attribute | Description | Type | Accepted Values | Default |
|
||
| ----| ----| ----| ---- | ----- |
|
||
|type| type of input | string | text, textarea and other [native input types](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#Form_%3Cinput%3E_types) | text |
|
||
|modelValue / v-model| binding value | string / number| — | — |
|
||
|maxlength| the max length | string / number| — | — |
|
||
|minlength| same as `minlength` in native input | number | — | — |
|
||
|show-word-limit | whether show word count，only works when `type` is 'text' or 'textarea' | boolean | — | false |
|
||
|placeholder| placeholder of Input| string | — | — |
|
||
| clearable | whether to show clear button | boolean | — | false |
|
||
| show-password | whether to show toggleable password input| boolean | — | false |
|
||
|disabled | whether Input is disabled | boolean | — | false |
|
||
|size | size of Input, works when `type` is not 'textarea' | string | medium / small / mini | — |
|
||
| prefix-icon | prefix icon class | string | — | — |
|
||
| suffix-icon | suffix icon class | string | — | — |
|
||
|rows | number of rows of textarea, only works when `type` is 'textarea' | number | — | 2 |
|
||
|autosize | whether textarea has an adaptive height, only works when `type` is 'textarea'. Can accept an object, e.g. { minRows: 2, maxRows: 6 } | boolean / object | — | false |
|
||
|autocomplete | same as `autocomplete` in native input | string | on/off | off |
|
||
|name | same as `name` in native input | string | — | — |
|
||
| readonly | same as `readonly` in native input | boolean | — | false |
|
||
|max | same as `max` in native input | — | — | — |
|
||
|min | same as `min` in native input | — | — | — |
|
||
|step| same as `step` in native input | — | — | — |
|
||
|resize| control the resizability | string | none / both / horizontal / vertical | — |
|
||
|autofocus | same as `autofocus` in native input | boolean | — | false |
|
||
|form | same as `form` in native input | string | — | — |
|
||
| label | label text | string | — | — |
|
||
| tabindex | input tabindex | string / number | - | - |
|
||
| validate-event | whether to trigger form validation | boolean | - | true |
|
||
| input-style | the style of the input element or textarea element | object | - | {} |
|
||
|
||
### Input slots
|
||
|
||
| Name | Description |
|
||
|------|--------|
|
||
| prefix | content as Input prefix, only works when `type` is 'text' |
|
||
| suffix | content as Input suffix, only works when `type` is 'text' |
|
||
| prepend | content to prepend before Input, only works when `type` is 'text' |
|
||
| append | content to append after Input, only works when `type` is 'text' |
|
||
|
||
### Input Events
|
||
|
||
| Event Name | Description | Parameters |
|
||
|----| ----| ----|
|
||
| blur | triggers when Input blurs | (event: Event) |
|
||
| focus | triggers when Input focuses | (event: Event) |
|
||
| change | triggers only when the input box loses focus or the user presses Enter | (value: string \| number) |
|
||
| input | triggers when the Input value change | (value: string \| number) |
|
||
| clear | triggers when the Input is cleared by clicking the clear button | — |
|
||
|
||
### Input Methods
|
||
|
||
| Method | Description | Parameters |
|
||
|------|--------|-------|
|
||
| focus | focus the input element | — |
|
||
| blur | blur the input element | — |
|
||
| select | select the text in input element | — |
|
||
|
||
### Autocomplete Attributes
|
||
|
||
Attribute | Description | Type | Accepted Values | Default
|
||
|----| ----| ----| ---- | -----|
|
||
| placeholder| the placeholder of Autocomplete| string | — | — |
|
||
| clearable | whether to show clear button | boolean | — | false |
|
||
| disabled | whether Autocomplete is disabled | boolean | — | false|
|
||
| value-key | key name of the input suggestion object for display | string | — | value |
|
||
| icon | icon name | string | — | — |
|
||
| model-value / v-model | binding value | string | — | — |
|
||
| debounce | debounce delay when typing, in milliseconds | number | — | 300 |
|
||
| placement | placement of the popup menu | string | top / top-start / top-end / bottom / bottom-start / bottom-end | bottom-start |
|
||
| fetch-suggestions | a method to fetch input suggestions. When suggestions are ready, invoke `callback(data:[])` to return them to Autocomplete | Function(queryString, callback) | — | — |
|
||
| popper-class | custom class name for autocomplete's dropdown | string | — | — |
|
||
| trigger-on-focus | whether show suggestions when input focus | boolean | — | true |
|
||
| name | same as `name` in native input | string | — | — |
|
||
| select-when-unmatched | whether to emit a `select` event on enter when there is no autocomplete match | boolean | — | false |
|
||
| label | label text | string | — | — |
|
||
| prefix-icon | prefix icon class | string | — | — |
|
||
| suffix-icon | suffix icon class | string | — | — |
|
||
| hide-loading | whether to hide the loading icon in remote search | boolean | — | false |
|
||
| popper-append-to-body | whether to append the dropdown to body. If the positioning of the dropdown is wrong, you can try to set this prop to false | boolean | - | false |
|
||
| highlight-first-item | whether to highlight first item in remote search suggestions by default | boolean | — | false |
|
||
|
||
### Autocomplete Slots
|
||
|
||
| Name | Description |
|
||
|------|--------|
|
||
| prefix | content as Input prefix |
|
||
| suffix | content as Input suffix |
|
||
| prepend | content to prepend before Input |
|
||
| append | content to append after Input |
|
||
|
||
### Autocomplete Scoped Slot
|
||
| Name | Description |
|
||
|------|--------|
|
||
| — | Custom content for input suggestions. The scope parameter is { item } |
|
||
|
||
### Autocomplete Events
|
||
|
||
| Event Name | Description | Parameters |
|
||
|----| ----| ----|
|
||
|select | triggers when a suggestion is clicked | suggestion being clicked |
|
||
| change | triggers when the icon inside Input value change | (value: string \| number) |
|
||
|
||
### Autocomplete Methods
|
||
|
||
| Method | Description | Parameters |
|
||
|------|--------|-------|
|
||
| focus | focus the input element | — |
|