mirror of
https://gitee.com/element-plus/element-plus.git
synced 2024-12-14 17:31:02 +08:00
197 lines
4.5 KiB
Markdown
197 lines
4.5 KiB
Markdown
|
## InputNumber 计数器
|
||
|
|
||
|
仅允许输入标准的数字值,可定义范围
|
||
|
|
||
|
### 基础用法
|
||
|
|
||
|
:::demo 要使用它,只需要在`el-input-number`元素中使用`v-model`绑定变量即可,变量的初始值即为默认值。
|
||
|
```html
|
||
|
<template>
|
||
|
<el-input-number v-model="num" @change="handleChange" :min="1" :max="10" label="描述文字"></el-input-number>
|
||
|
</template>
|
||
|
<script>
|
||
|
export default {
|
||
|
data() {
|
||
|
return {
|
||
|
num: 1
|
||
|
};
|
||
|
},
|
||
|
methods: {
|
||
|
handleChange(value) {
|
||
|
console.log(value);
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
</script>
|
||
|
```
|
||
|
:::
|
||
|
|
||
|
### 禁用状态
|
||
|
|
||
|
:::demo `disabled`属性接受一个`Boolean`,设置为`true`即可禁用整个组件,如果你只需要控制数值在某一范围内,可以设置`min`属性和`max`属性,不设置`min`和`max`时,最小值为 0。
|
||
|
|
||
|
```html
|
||
|
<template>
|
||
|
<el-input-number v-model="num" :disabled="true"></el-input-number>
|
||
|
</template>
|
||
|
<script>
|
||
|
export default {
|
||
|
data() {
|
||
|
return {
|
||
|
num: 1
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
</script>
|
||
|
```
|
||
|
:::
|
||
|
|
||
|
### 步数
|
||
|
|
||
|
允许定义递增递减的步数控制
|
||
|
|
||
|
:::demo 设置`step`属性可以控制步长,接受一个`Number`。
|
||
|
|
||
|
```html
|
||
|
<template>
|
||
|
<el-input-number v-model="num" :step="2"></el-input-number>
|
||
|
</template>
|
||
|
<script>
|
||
|
export default {
|
||
|
data() {
|
||
|
return {
|
||
|
num: 5
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
</script>
|
||
|
```
|
||
|
:::
|
||
|
|
||
|
### 严格步数
|
||
|
|
||
|
:::demo `step-strictly`属性接受一个`Boolean`。如果这个属性被设置为`true`,则只能输入步数的倍数。
|
||
|
|
||
|
```html
|
||
|
<template>
|
||
|
<el-input-number v-model="num" :step="2" step-strictly></el-input-number>
|
||
|
</template>
|
||
|
<script>
|
||
|
export default {
|
||
|
data() {
|
||
|
return {
|
||
|
num: 2
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
</script>
|
||
|
```
|
||
|
:::
|
||
|
|
||
|
### 精度
|
||
|
|
||
|
:::demo 设置 `precision` 属性可以控制数值精度,接收一个 `Number`。
|
||
|
|
||
|
```html
|
||
|
<template>
|
||
|
<el-input-number v-model="num" :precision="2" :step="0.1" :max="10"></el-input-number>
|
||
|
</template>
|
||
|
<script>
|
||
|
export default {
|
||
|
data() {
|
||
|
return {
|
||
|
num: 1
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
</script>
|
||
|
```
|
||
|
|
||
|
:::
|
||
|
|
||
|
:::tip
|
||
|
`precision` 的值必须是一个非负整数,并且不能小于 `step` 的小数位数。
|
||
|
:::
|
||
|
|
||
|
### 尺寸
|
||
|
|
||
|
额外提供了 `medium`、`small`、`mini` 三种尺寸的数字输入框
|
||
|
|
||
|
:::demo
|
||
|
|
||
|
```html
|
||
|
<template>
|
||
|
<el-input-number v-model="num1"></el-input-number>
|
||
|
<el-input-number size="medium" v-model="num2"></el-input-number>
|
||
|
<el-input-number size="small" v-model="num3"></el-input-number>
|
||
|
<el-input-number size="mini" v-model="num4"></el-input-number>
|
||
|
</template>
|
||
|
<script>
|
||
|
export default {
|
||
|
data() {
|
||
|
return {
|
||
|
num1: 1,
|
||
|
num2: 1,
|
||
|
num3: 1,
|
||
|
num4: 1
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
</script>
|
||
|
```
|
||
|
:::
|
||
|
|
||
|
### 按钮位置
|
||
|
|
||
|
:::demo 设置 `controls-position` 属性可以控制按钮位置。
|
||
|
```html
|
||
|
<template>
|
||
|
<el-input-number v-model="num" controls-position="right" @change="handleChange" :min="1" :max="10"></el-input-number>
|
||
|
</template>
|
||
|
<script>
|
||
|
export default {
|
||
|
data() {
|
||
|
return {
|
||
|
num: 1
|
||
|
};
|
||
|
},
|
||
|
methods: {
|
||
|
handleChange(value) {
|
||
|
console.log(value);
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
</script>
|
||
|
```
|
||
|
:::
|
||
|
|
||
|
### Attributes
|
||
|
| 参数 | 说明 | 类型 | 可选值 | 默认值 |
|
||
|
|----------|-------------- |----------|-------------------------------- |-------- |
|
||
|
| value / v-model | 绑定值 | number | — | 0 |
|
||
|
| min | 设置计数器允许的最小值 | number | — | -Infinity |
|
||
|
| max | 设置计数器允许的最大值 | number | — | Infinity |
|
||
|
| step | 计数器步长 | number | — | 1 |
|
||
|
| step-strictly | 是否只能输入 step 的倍数 | boolean | — | false |
|
||
|
| precision| 数值精度 | number | — | — |
|
||
|
| size | 计数器尺寸 | string | large, small | — |
|
||
|
| disabled | 是否禁用计数器 | boolean | — | false |
|
||
|
| controls | 是否使用控制按钮 | boolean | — | true |
|
||
|
| controls-position | 控制按钮位置 | string | right | - |
|
||
|
| name | 原生属性 | string | — | — |
|
||
|
| label | 输入框关联的label文字 | string | — | — |
|
||
|
| placeholder | 输入框默认 placeholder | string | - | - |
|
||
|
|
||
|
### Events
|
||
|
| 事件名称 | 说明 | 回调参数 |
|
||
|
|---------|--------|---------|
|
||
|
| change | 绑定值被改变时触发 | currentValue, oldValue |
|
||
|
| blur | 在组件 Input 失去焦点时触发 | (event: Event) |
|
||
|
| focus | 在组件 Input 获得焦点时触发 | (event: Event) |
|
||
|
|
||
|
### Methods
|
||
|
| 方法名 | 说明 | 参数 |
|
||
|
| ---- | ---- | ---- |
|
||
|
| focus | 使 input 获取焦点 | - |
|
||
|
| select | 选中 input 中的文字 | — |
|