element-plus/website/docs/zh-CN/input.md
Simona 5db2e9729c
fix: popper transition with 'el-zoom-in-top' (#785)
fix all picker's transition and styles, including select, autocomplete, timer-picker, date-picker
and so on, which transition should be 'el-zoom-in-top' and without duplication.
2020-12-02 22:33:26 +08:00

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## Input 输入框
通过鼠标或键盘输入字符
:::warning
Input 为受控组件,它**总会显示 Vue 绑定值**。
通常情况下,应当处理 `input` 事件,并更新组件的绑定值(或使用`v-model`)。否则,输入框内显示的值将不会改变。
不支持 `v-model` 修饰符。
:::
### 基础用法
:::demo
```html
<el-input v-model="input" placeholder="请输入内容"></el-input>
<script>
import { defineComponent, ref } from 'vue'
export default defineComponent ({
setup() {
return {
input: ref('')
}
}
})
</script>
```
:::
### 禁用状态
:::demo 通过 `disabled` 属性指定是否禁用 input 组件
```html
<el-input
placeholder="请输入内容"
v-model="input"
:disabled="true">
</el-input>
<script>
import { defineComponent, ref } from 'vue'
export default defineComponent ({
setup() {
return {
input: ref('')
}
}
})
</script>
```
:::
### 可清空
:::demo 使用`clearable`属性即可得到一个可清空的输入框
```html
<el-input
placeholder="请输入内容"
v-model="input"
clearable>
</el-input>
<script>
import { defineComponent, ref } from 'vue'
export default defineComponent ({
setup() {
return {
input: ref('')
}
}
})
</script>
```
:::
### 密码框
:::demo 使用`show-password`属性即可得到一个可切换显示隐藏的密码框
```html
<el-input placeholder="请输入密码" v-model="input" show-password></el-input>
<script>
import { defineComponent, ref } from 'vue'
export default defineComponent ({
setup() {
return {
input: ref('')
}
}
})
</script>
```
:::
### 带 icon 的输入框
带有图标标记输入类型
:::demo 可以通过 `prefix-icon``suffix-icon` 属性在 input 组件首部和尾部增加显示图标,也可以通过 slot 来放置图标。
```html
<div class="demo-input-suffix">
属性方式:
<el-input
placeholder="请选择日期"
suffix-icon="el-icon-date"
v-model="input1">
</el-input>
<el-input
placeholder="请输入内容"
prefix-icon="el-icon-search"
v-model="input2">
</el-input>
</div>
<div class="demo-input-suffix">
slot 方式:
<el-input
placeholder="请选择日期"
v-model="input3">
<template #suffix>
<i class="el-input__icon el-icon-date"></i>
</template>
</el-input>
<el-input
placeholder="请输入内容"
v-model="input4">
<template #prefix>
<i class="el-input__icon el-icon-search"></i>
</template>
</el-input>
</div>
<style>
.demo-input-label {
display: inline-block;
width: 130px;
}
</style>
<script>
import { defineComponent, ref } from 'vue'
export default defineComponent ({
setup() {
return {
input1: ref(''),
input2: ref(''),
input3: ref(''),
input4: ref('')
}
}
})
</script>
```
:::
### 文本域
用于输入多行文本信息,通过将 `type` 属性的值指定为 textarea。
:::demo 文本域高度可通过 `rows` 属性控制
```html
<el-input
type="textarea"
:rows="2"
placeholder="请输入内容"
v-model="textarea">
</el-input>
<script>
import { defineComponent, ref } from 'vue'
export default defineComponent ({
setup() {
return {
textarea: ref('')
}
}
})
</script>
```
:::
### 可自适应文本高度的文本域
通过设置 `autosize` 属性可以使得文本域的高度能够根据文本内容自动进行调整,并且 `autosize` 还可以设定为一个对象,指定最小行数和最大行数。
:::demo
```html
<el-input
type="textarea"
autosize
placeholder="请输入内容"
v-model="textarea1">
</el-input>
<div style="margin: 20px 0;"></div>
<el-input
type="textarea"
:autosize="{ minRows: 2, maxRows: 4}"
placeholder="请输入内容"
v-model="textarea2">
</el-input>
<script>
import { defineComponent, ref } from 'vue'
export default defineComponent ({
setup() {
return {
textarea1: ref(''),
textarea2: ref('')
}
}
})
</script>
```
:::
### 复合型输入框
可前置或后置元素,一般为标签或按钮
:::demo 可通过 slot 来指定在 input 中前置或者后置内容。
```html
<div>
<el-input placeholder="请输入内容" v-model="input1">
<template #prepend>Http://</template>
</el-input>
</div>
<div style="margin-top: 15px">
<el-input placeholder="请输入内容" v-model="input2">
<template #append>.com</template>
</el-input>
</div>
<div style="margin-top: 15px">
<el-input
placeholder="请输入内容"
v-model="input3"
class="input-with-select"
>
<template #prepend>
<el-select v-model="select" placeholder="请选择">
<el-option label="餐厅名" value="1"></el-option>
<el-option label="订单号" value="2"></el-option>
<el-option label="用户电话" value="3"></el-option>
</el-select>
</template>
<template #append>
<el-button icon="el-icon-search"></el-button>
</template>
</el-input>
</div>
<style>
.el-select .el-input {
width: 130px;
}
.input-with-select .el-input-group__prepend {
background-color: #fff;
}
</style>
<script>
import { defineComponent, ref } from 'vue'
export default defineComponent ({
setup() {
return {
input1: ref(''),
input2: ref(''),
input3: ref(''),
select: ref('')
}
}
})
</script>
```
:::
### 尺寸
:::demo 可通过 `size` 属性指定输入框的尺寸,除了默认的大小外,还提供了 large、small 和 mini 三种尺寸。
```html
<div class="demo-input-size">
<el-input
placeholder="请输入内容"
suffix-icon="el-icon-date"
v-model="input1">
</el-input>
<el-input
size="medium"
placeholder="请输入内容"
suffix-icon="el-icon-date"
v-model="input2">
</el-input>
<el-input
size="small"
placeholder="请输入内容"
suffix-icon="el-icon-date"
v-model="input3">
</el-input>
<el-input
size="mini"
placeholder="请输入内容"
suffix-icon="el-icon-date"
v-model="input4">
</el-input>
</div>
<script>
import { defineComponent, ref } from 'vue'
export default defineComponent ({
setup() {
return {
input1: ref(''),
input2: ref(''),
input3: ref(''),
input4: ref('')
}
}
})
</script>
```
:::
### 带输入建议
根据输入内容提供对应的输入建议
:::demo autocomplete 是一个可带输入建议的输入框组件,`fetch-suggestions` 是一个返回输入建议的方法属性,如 querySearch(queryString, cb),在该方法中你可以在你的输入建议数据准备好时通过 cb(data) 返回到 autocomplete 组件中。
```html
<el-row class="demo-autocomplete">
<el-col :span="12">
<div class="sub-title">激活即列出输入建议</div>
<el-autocomplete
class="inline-input"
v-model="state1"
:fetch-suggestions="querySearch"
placeholder="请输入内容"
@select="handleSelect"
></el-autocomplete>
</el-col>
<el-col :span="12">
<div class="sub-title">输入后匹配输入建议</div>
<el-autocomplete
class="inline-input"
v-model="state2"
:fetch-suggestions="querySearch"
placeholder="请输入内容"
:trigger-on-focus="false"
@select="handleSelect"
></el-autocomplete>
</el-col>
</el-row>
<script>
import { defineComponent, ref, onMounted } from 'vue'
export default defineComponent({
setup() {
const restaurants = ref([]);
const querySearch = (queryString, cb) => {
var results = queryString
? restaurants.value.filter(createFilter(queryString))
: restaurants.value;
// 调用 callback 返回建议列表的数据
cb(results);
};
const createFilter = (queryString) => {
return (restaurant) => {
return (
restaurant.value.toLowerCase().indexOf(queryString.toLowerCase()) ===
0
);
};
};
const loadAll = () => {
return [
{ value: "三全鲜食(北新泾店)", address: "长宁区新渔路144号" },
{
value: "Hot honey 首尔炸鸡(仙霞路)",
address: "上海市长宁区淞虹路661号",
},
{
value: "新旺角茶餐厅",
address: "上海市普陀区真北路988号创邑金沙谷6号楼113",
},
{ value: "泷千家(天山西路店)", address: "天山西路438号" },
{
value: "胖仙女纸杯蛋糕(上海凌空店)",
address: "上海市长宁区金钟路968号1幢18号楼一层商铺18-101",
},
{ value: "贡茶", address: "上海市长宁区金钟路633号" },
{
value: "豪大大香鸡排超级奶爸",
address: "上海市嘉定区曹安公路曹安路1685号",
},
{
value: "茶芝兰(奶茶,手抓饼)",
address: "上海市普陀区同普路1435号",
},
{ value: "十二泷町", address: "上海市北翟路1444弄81号B幢-107" },
{ value: "星移浓缩咖啡", address: "上海市嘉定区新郁路817号" },
{ value: "阿姨奶茶/豪大大", address: "嘉定区曹安路1611号" },
{ value: "新麦甜四季甜品炸鸡", address: "嘉定区曹安公路2383弄55号" },
{
value: "Monica摩托主题咖啡店",
address: "嘉定区江桥镇曹安公路2409号1F2383弄62号1F",
},
{
value: "浮生若茶凌空soho店",
address: "上海长宁区金钟路968号9号楼地下一层",
},
{ value: "NONO JUICE 鲜榨果汁", address: "上海市长宁区天山西路119号" },
{ value: "CoCo都可(北新泾店)", address: "上海市长宁区仙霞西路" },
{
value: "快乐柠檬(神州智慧店)",
address: "上海市长宁区天山西路567号1层R117号店铺",
},
{
value: "Merci Paul cafe",
address: "上海市普陀区光复西路丹巴路28弄6号楼819",
},
{
value: "猫山王(西郊百联店)",
address: "上海市长宁区仙霞西路88号第一层G05-F01-1-306",
},
{ value: "枪会山", address: "上海市普陀区棕榈路" },
{ value: "纵食", address: "元丰天山花园(东门) 双流路267号" },
{ value: "钱记", address: "上海市长宁区天山西路" },
{ value: "壹杯加", address: "上海市长宁区通协路" },
{
value: "唦哇嘀咖",
address: "上海市长宁区新泾镇金钟路999号2幢B幢第01层第1-02A单元",
},
{ value: "爱茜茜里(西郊百联)", address: "长宁区仙霞西路88号1305室" },
{
value: "爱茜茜里(近铁广场)",
address:
"上海市普陀区真北路818号近铁城市广场北区地下二楼N-B2-O2-C商铺",
},
{
value: "鲜果榨汁(金沙江路和美广店)",
address: "普陀区金沙江路2239号金沙和美广场B1-10-6",
},
{
value: "开心丽果(缤谷店)",
address: "上海市长宁区威宁路天山路341号",
},
{ value: "超级鸡车(丰庄路店)", address: "上海市嘉定区丰庄路240号" },
{ value: "妙生活果园(北新泾店)", address: "长宁区新渔路144号" },
{ value: "香宜度麻辣香锅", address: "长宁区淞虹路148号" },
{
value: "凡仔汉堡(老真北路店)",
address: "上海市普陀区老真北路160号",
},
{ value: "港式小铺", address: "上海市长宁区金钟路968号15楼15-105室" },
{ value: "蜀香源麻辣香锅(剑河路店)", address: "剑河路443-1" },
{ value: "北京饺子馆", address: "长宁区北新泾街道天山西路490-1号" },
{
value: "饭典*新简餐凌空SOHO店",
address: "上海市长宁区金钟路968号9号楼地下一层9-83室",
},
{
value: "焦耳·川式快餐(金钟路店)",
address: "上海市金钟路633号地下一层甲部",
},
{ value: "动力鸡车", address: "长宁区仙霞西路299弄3号101B" },
{ value: "浏阳蒸菜", address: "天山西路430号" },
{ value: "四海游龙(天山西路店)", address: "上海市长宁区天山西路" },
{
value: "樱花食堂(凌空店)",
address: "上海市长宁区金钟路968号15楼15-105室",
},
{ value: "壹分米客家传统调制米粉(天山店)", address: "天山西路428号" },
{
value: "福荣祥烧腊(平溪路店)",
address: "上海市长宁区协和路福泉路255弄57-73号",
},
{
value: "速记黄焖鸡米饭",
address: "上海市长宁区北新泾街道金钟路180号1层01号摊位",
},
{ value: "红辣椒麻辣烫", address: "上海市长宁区天山西路492号" },
{
value: "(小杨生煎)西郊百联餐厅",
address: "长宁区仙霞西路88号百联2楼",
},
{ value: "阳阳麻辣烫", address: "天山西路389号" },
{
value: "南拳妈妈龙虾盖浇饭",
address: "普陀区金沙江路1699号鑫乐惠美食广场A13",
},
];
};
const handleSelect = (item) => {
console.log(item);
};
onMounted(() => {
restaurants.value = loadAll();
});
return {
restaurants,
state1: ref(''),
state2: ref(''),
querySearch,
createFilter,
loadAll,
handleSelect,
};
},
});
</script>
```
:::
### 自定义模板
可自定义输入建议的显示
:::demo 使用`#default`自定义输入建议的模板。该 scope 的参数为`item`,表示当前输入建议对象。
```html
<el-autocomplete
popper-class="my-autocomplete"
v-model="state"
:fetch-suggestions="querySearch"
placeholder="请输入内容"
@select="handleSelect"
>
<template #suffix>
<i class="el-icon-edit el-input__icon" @click="handleIconClick"> </i>
</template>
<template #default="{ item }">
<div class="name">{{ item.value }}</div>
<span class="addr">{{ item.address }}</span>
</template>
</el-autocomplete>
<style lang="scss">
.my-autocomplete {
li {
line-height: normal;
padding: 7px;
.name {
text-overflow: ellipsis;
overflow: hidden;
}
.addr {
font-size: 12px;
color: #b4b4b4;
}
.highlighted .addr {
color: #ddd;
}
}
}
</style>
<script>
import { defineComponent, ref, onMounted } from 'vue'
export default defineComponent({
setup() {
const restaurants = ref([]);
const querySearch = (queryString, cb) => {
var results = queryString
? restaurants.value.filter(createFilter(queryString))
: restaurants.value;
// 调用 callback 返回建议列表的数据
cb(results);
};
const createFilter = (queryString) => {
return (restaurant) => {
return (
restaurant.value.toLowerCase().indexOf(queryString.toLowerCase()) ===
0
);
};
};
const loadAll = () => {
return [
{ value: "三全鲜食(北新泾店)", address: "长宁区新渔路144号" },
{
value: "Hot honey 首尔炸鸡(仙霞路)",
address: "上海市长宁区淞虹路661号",
},
{
value: "新旺角茶餐厅",
address: "上海市普陀区真北路988号创邑金沙谷6号楼113",
},
{ value: "泷千家(天山西路店)", address: "天山西路438号" },
{
value: "胖仙女纸杯蛋糕(上海凌空店)",
address: "上海市长宁区金钟路968号1幢18号楼一层商铺18-101",
},
{ value: "贡茶", address: "上海市长宁区金钟路633号" },
{
value: "豪大大香鸡排超级奶爸",
address: "上海市嘉定区曹安公路曹安路1685号",
},
{
value: "茶芝兰(奶茶,手抓饼)",
address: "上海市普陀区同普路1435号",
},
{ value: "十二泷町", address: "上海市北翟路1444弄81号B幢-107" },
{ value: "星移浓缩咖啡", address: "上海市嘉定区新郁路817号" },
{ value: "阿姨奶茶/豪大大", address: "嘉定区曹安路1611号" },
{ value: "新麦甜四季甜品炸鸡", address: "嘉定区曹安公路2383弄55号" },
{
value: "Monica摩托主题咖啡店",
address: "嘉定区江桥镇曹安公路2409号1F2383弄62号1F",
},
{
value: "浮生若茶凌空soho店",
address: "上海长宁区金钟路968号9号楼地下一层",
},
{ value: "NONO JUICE 鲜榨果汁", address: "上海市长宁区天山西路119号" },
{ value: "CoCo都可(北新泾店)", address: "上海市长宁区仙霞西路" },
{
value: "快乐柠檬(神州智慧店)",
address: "上海市长宁区天山西路567号1层R117号店铺",
},
{
value: "Merci Paul cafe",
address: "上海市普陀区光复西路丹巴路28弄6号楼819",
},
{
value: "猫山王(西郊百联店)",
address: "上海市长宁区仙霞西路88号第一层G05-F01-1-306",
},
{ value: "枪会山", address: "上海市普陀区棕榈路" },
{ value: "纵食", address: "元丰天山花园(东门) 双流路267号" },
{ value: "钱记", address: "上海市长宁区天山西路" },
{ value: "壹杯加", address: "上海市长宁区通协路" },
{
value: "唦哇嘀咖",
address: "上海市长宁区新泾镇金钟路999号2幢B幢第01层第1-02A单元",
},
{ value: "爱茜茜里(西郊百联)", address: "长宁区仙霞西路88号1305室" },
{
value: "爱茜茜里(近铁广场)",
address:
"上海市普陀区真北路818号近铁城市广场北区地下二楼N-B2-O2-C商铺",
},
{
value: "鲜果榨汁(金沙江路和美广店)",
address: "普陀区金沙江路2239号金沙和美广场B1-10-6",
},
{
value: "开心丽果(缤谷店)",
address: "上海市长宁区威宁路天山路341号",
},
{ value: "超级鸡车(丰庄路店)", address: "上海市嘉定区丰庄路240号" },
{ value: "妙生活果园(北新泾店)", address: "长宁区新渔路144号" },
{ value: "香宜度麻辣香锅", address: "长宁区淞虹路148号" },
{
value: "凡仔汉堡(老真北路店)",
address: "上海市普陀区老真北路160号",
},
{ value: "港式小铺", address: "上海市长宁区金钟路968号15楼15-105室" },
{ value: "蜀香源麻辣香锅(剑河路店)", address: "剑河路443-1" },
{ value: "北京饺子馆", address: "长宁区北新泾街道天山西路490-1号" },
{
value: "饭典*新简餐凌空SOHO店",
address: "上海市长宁区金钟路968号9号楼地下一层9-83室",
},
{
value: "焦耳·川式快餐(金钟路店)",
address: "上海市金钟路633号地下一层甲部",
},
{ value: "动力鸡车", address: "长宁区仙霞西路299弄3号101B" },
{ value: "浏阳蒸菜", address: "天山西路430号" },
{ value: "四海游龙(天山西路店)", address: "上海市长宁区天山西路" },
{
value: "樱花食堂(凌空店)",
address: "上海市长宁区金钟路968号15楼15-105室",
},
{ value: "壹分米客家传统调制米粉(天山店)", address: "天山西路428号" },
{
value: "福荣祥烧腊(平溪路店)",
address: "上海市长宁区协和路福泉路255弄57-73号",
},
{
value: "速记黄焖鸡米饭",
address: "上海市长宁区北新泾街道金钟路180号1层01号摊位",
},
{ value: "红辣椒麻辣烫", address: "上海市长宁区天山西路492号" },
{
value: "(小杨生煎)西郊百联餐厅",
address: "长宁区仙霞西路88号百联2楼",
},
{ value: "阳阳麻辣烫", address: "天山西路389号" },
{
value: "南拳妈妈龙虾盖浇饭",
address: "普陀区金沙江路1699号鑫乐惠美食广场A13",
},
];
};
const handleSelect = (item) => {
console.log(item);
};
const handleIconClick = (ev) => {
console.log(ev);
};
onMounted(() => {
restaurants.value = loadAll();
});
return {
restaurants,
state: ref(''),
querySearch,
createFilter,
loadAll,
handleSelect,
handleIconClick,
};
},
});
</script>
```
:::
### 远程搜索
从服务端搜索数据
:::demo
```html
<el-autocomplete
v-model="state"
:fetch-suggestions="querySearchAsync"
placeholder="请输入内容"
@select="handleSelect"
></el-autocomplete>
<script>
import { defineComponent, ref, onMounted } from 'vue'
export default defineComponent({
setup() {
const restaurants = ref([]);
const loadAll = () => {
return [
{ value: "三全鲜食(北新泾店)", address: "长宁区新渔路144号" },
{
value: "Hot honey 首尔炸鸡(仙霞路)",
address: "上海市长宁区淞虹路661号",
},
{
value: "新旺角茶餐厅",
address: "上海市普陀区真北路988号创邑金沙谷6号楼113",
},
{ value: "泷千家(天山西路店)", address: "天山西路438号" },
{
value: "胖仙女纸杯蛋糕(上海凌空店)",
address: "上海市长宁区金钟路968号1幢18号楼一层商铺18-101",
},
{ value: "贡茶", address: "上海市长宁区金钟路633号" },
{
value: "豪大大香鸡排超级奶爸",
address: "上海市嘉定区曹安公路曹安路1685号",
},
{
value: "茶芝兰(奶茶,手抓饼)",
address: "上海市普陀区同普路1435号",
},
{ value: "十二泷町", address: "上海市北翟路1444弄81号B幢-107" },
{ value: "星移浓缩咖啡", address: "上海市嘉定区新郁路817号" },
{ value: "阿姨奶茶/豪大大", address: "嘉定区曹安路1611号" },
{ value: "新麦甜四季甜品炸鸡", address: "嘉定区曹安公路2383弄55号" },
{
value: "Monica摩托主题咖啡店",
address: "嘉定区江桥镇曹安公路2409号1F2383弄62号1F",
},
{
value: "浮生若茶凌空soho店",
address: "上海长宁区金钟路968号9号楼地下一层",
},
{ value: "NONO JUICE 鲜榨果汁", address: "上海市长宁区天山西路119号" },
{ value: "CoCo都可(北新泾店)", address: "上海市长宁区仙霞西路" },
{
value: "快乐柠檬(神州智慧店)",
address: "上海市长宁区天山西路567号1层R117号店铺",
},
{
value: "Merci Paul cafe",
address: "上海市普陀区光复西路丹巴路28弄6号楼819",
},
{
value: "猫山王(西郊百联店)",
address: "上海市长宁区仙霞西路88号第一层G05-F01-1-306",
},
{ value: "枪会山", address: "上海市普陀区棕榈路" },
{ value: "纵食", address: "元丰天山花园(东门) 双流路267号" },
{ value: "钱记", address: "上海市长宁区天山西路" },
{ value: "壹杯加", address: "上海市长宁区通协路" },
{
value: "唦哇嘀咖",
address: "上海市长宁区新泾镇金钟路999号2幢B幢第01层第1-02A单元",
},
{ value: "爱茜茜里(西郊百联)", address: "长宁区仙霞西路88号1305室" },
{
value: "爱茜茜里(近铁广场)",
address:
"上海市普陀区真北路818号近铁城市广场北区地下二楼N-B2-O2-C商铺",
},
{
value: "鲜果榨汁(金沙江路和美广店)",
address: "普陀区金沙江路2239号金沙和美广场B1-10-6",
},
{
value: "开心丽果(缤谷店)",
address: "上海市长宁区威宁路天山路341号",
},
{ value: "超级鸡车(丰庄路店)", address: "上海市嘉定区丰庄路240号" },
{ value: "妙生活果园(北新泾店)", address: "长宁区新渔路144号" },
{ value: "香宜度麻辣香锅", address: "长宁区淞虹路148号" },
{
value: "凡仔汉堡(老真北路店)",
address: "上海市普陀区老真北路160号",
},
{ value: "港式小铺", address: "上海市长宁区金钟路968号15楼15-105室" },
{ value: "蜀香源麻辣香锅(剑河路店)", address: "剑河路443-1" },
{ value: "北京饺子馆", address: "长宁区北新泾街道天山西路490-1号" },
{
value: "饭典*新简餐凌空SOHO店",
address: "上海市长宁区金钟路968号9号楼地下一层9-83室",
},
{
value: "焦耳·川式快餐(金钟路店)",
address: "上海市金钟路633号地下一层甲部",
},
{ value: "动力鸡车", address: "长宁区仙霞西路299弄3号101B" },
{ value: "浏阳蒸菜", address: "天山西路430号" },
{ value: "四海游龙(天山西路店)", address: "上海市长宁区天山西路" },
{
value: "樱花食堂(凌空店)",
address: "上海市长宁区金钟路968号15楼15-105室",
},
{ value: "壹分米客家传统调制米粉(天山店)", address: "天山西路428号" },
{
value: "福荣祥烧腊(平溪路店)",
address: "上海市长宁区协和路福泉路255弄57-73号",
},
{
value: "速记黄焖鸡米饭",
address: "上海市长宁区北新泾街道金钟路180号1层01号摊位",
},
{ value: "红辣椒麻辣烫", address: "上海市长宁区天山西路492号" },
{
value: "(小杨生煎)西郊百联餐厅",
address: "长宁区仙霞西路88号百联2楼",
},
{ value: "阳阳麻辣烫", address: "天山西路389号" },
{
value: "南拳妈妈龙虾盖浇饭",
address: "普陀区金沙江路1699号鑫乐惠美食广场A13",
},
];
};
let timeout;
const querySearchAsync = (queryString, cb) => {
var results = queryString
? restaurants.value.filter(createFilter(queryString))
: restaurants.value;
clearTimeout(timeout);
timeout = setTimeout(() => {
cb(results);
}, 3000 * Math.random());
};
const createFilter = (queryString) => {
return (restaurant) => {
return (
restaurant.value.toLowerCase().indexOf(queryString.toLowerCase()) ===
0
);
};
};
const handleSelect = (item) => {
console.log(item);
};
onMounted(() => {
restaurants.value = loadAll();
});
return {
restaurants,
state: ref(''),
querySearchAsync,
createFilter,
loadAll,
handleSelect,
};
},
});
</script>
```
:::
### 输入长度限制
:::demo `maxlength``minlength` 是原生属性,用来限制输入框的字符长度,其中字符长度是用 Javascript 的字符串长度统计的。对于类型为 `text``textarea` 的输入框,在使用 `maxlength` 属性限制最大输入长度的同时,可通过设置 `show-word-limit` 属性来展示字数统计。
```html
<el-input
type="text"
placeholder="请输入内容"
v-model="text"
maxlength="10"
show-word-limit
>
</el-input>
<div style="margin: 20px 0;"></div>
<el-input
type="textarea"
placeholder="请输入内容"
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
| 参数 | 说明 | 类型 | 可选值 | 默认值 |
|------------- |---------------- |---------------- |---------------------- |-------- |
| type | 类型 | string | texttextarea 和其他 [原生 input 的 type 值](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#Form_%3Cinput%3E_types) | text |
| value / v-model | 绑定值 | string / number | — | — |
| maxlength | 原生属性,最大输入长度 | number | — | — |
| minlength | 原生属性,最小输入长度 | number | — | — |
| show-word-limit | 是否显示输入字数统计,只在 `type = "text"``type = "textarea"` 时有效 | boolean | — | false |
| placeholder | 输入框占位文本 | string | — | — |
| clearable | 是否可清空 | boolean | — | false |
| show-password | 是否显示切换密码图标| boolean | — | false |
| disabled | 禁用 | boolean | — | false |
| size | 输入框尺寸,只在 `type!="textarea"` 时有效 | string | medium / small / mini | — |
| prefix-icon | 输入框头部图标 | string | — | — |
| suffix-icon | 输入框尾部图标 | string | — | — |
| rows | 输入框行数,只对 `type="textarea"` 有效 | number | — | 2 |
| autosize | 自适应内容高度,只对 `type="textarea"` 有效,可传入对象,如,{ minRows: 2, maxRows: 6 } | boolean / object | — | false |
| autocomplete | 原生属性,自动补全 | string | on, off | off |
| auto-complete | 下个主版本弃用 | string | on, off | off |
| name | 原生属性 | string | — | — |
| readonly | 原生属性,是否只读 | boolean | — | false |
| max | 原生属性,设置最大值 | — | — | — |
| min | 原生属性,设置最小值 | — | — | — |
| step | 原生属性,设置输入字段的合法数字间隔 | — | — | — |
| resize | 控制是否能被用户缩放 | string | none, both, horizontal, vertical | — |
| autofocus | 原生属性,自动获取焦点 | boolean | true, false | false |
| form | 原生属性 | string | — | — |
| label | 输入框关联的label文字 | string | — | — |
| tabindex | 输入框的tabindex | string | - | - |
| validate-event | 输入时是否触发表单的校验 | boolean | - | true |
### Input Slots
| name | 说明 |
|------|--------|
| prefix | 输入框头部内容,只对 `type="text"` 有效 |
| suffix | 输入框尾部内容,只对 `type="text"` 有效 |
| prepend | 输入框前置内容,只对 `type="text"` 有效 |
| append | 输入框后置内容,只对 `type="text"` 有效 |
### Input Events
| 事件名称 | 说明 | 回调参数 |
|---------|--------|---------|
| blur | 在 Input 失去焦点时触发 | (event: Event) |
| focus | 在 Input 获得焦点时触发 | (event: Event) |
| change | 仅在输入框失去焦点或用户按下回车时触发 | (value: string \| number) |
| input | 在 Input 值改变时触发 | (value: string \| number) |
| clear | 在点击由 `clearable` 属性生成的清空按钮时触发 | — |
### Input Methods
| 方法名 | 说明 | 参数 |
| ---- | ---- | ---- |
| focus | 使 input 获取焦点 | — |
| blur | 使 input 失去焦点 | — |
| select | 选中 input 中的文字 | — |
### Autocomplete Attributes
| 参数 | 说明 | 类型 | 可选值 | 默认值 |
|------------- |---------------- |---------------- |---------------------- |-------- |
| placeholder | 输入框占位文本 | string | — | — |
| disabled | 禁用 | boolean | — | false |
| value-key | 输入建议对象中用于显示的键名 | string | — | value |
| value | 必填值,输入绑定值 | string | — | — |
| debounce | 获取输入建议的去抖延时 | number | — | 300 |
| placement | 菜单弹出位置 | string | top / top-start / top-end / bottom / bottom-start / bottom-end | bottom-start |
| fetch-suggestions | 返回输入建议的方法,仅当你的输入建议数据 resolve 时,通过调用 callback(data:[]) 来返回它 | Function(queryString, callback) | — | — |
| popper-class | Autocomplete 下拉列表的类名 | string | — | — |
| trigger-on-focus | 是否在输入框 focus 时显示建议列表 | boolean | — | true |
| name | 原生属性 | string | — | — |
| select-when-unmatched | 在输入没有任何匹配建议的情况下,按下回车是否触发 `select` 事件 | boolean | — | false |
| label | 输入框关联的label文字 | string | — | — |
| prefix-icon | 输入框头部图标 | string | — | — |
| suffix-icon | 输入框尾部图标 | string | — | — |
| hide-loading | 是否隐藏远程加载时的加载图标 | boolean | — | false |
| popper-append-to-body | 是否将下拉列表插入至 body 元素。在下拉列表的定位出现问题时,可将该属性设置为 false | boolean | - | false |
| highlight-first-item | 是否默认突出显示远程搜索建议中的第一项 | boolean | — | false |
### Autocomplete Slots
| name | 说明 |
|------|--------|
| prefix | 输入框头部内容 |
| suffix | 输入框尾部内容 |
| prepend | 输入框前置内容 |
| append | 输入框后置内容 |
### Autocomplete Scoped Slot
| name | 说明 |
|------|--------|
| — | 自定义输入建议,参数为 { item } |
### Autocomplete Events
| 事件名称 | 说明 | 回调参数 |
|---------|--------|---------|
| select | 点击选中建议项时触发 | 选中建议项 |
| change | 在 Input 值改变时触发 | (value: string \| number) |
### Autocomplete Methods
| 方法名 | 说明 | 参数 |
| ---- | ---- | ---- |
| focus | 使 input 获取焦点 | - |