element-plus/website/docs/en-US/input-number.md
2021-05-25 19:09:53 +08:00

4.4 KiB

InputNumber

Input numerical values with a customizable range.

Basic usage

:::demo Bind a variable to v-model in <el-input-number> element and you are set.

<template>
  <el-input-number v-model="num" @change="handleChange" :min="1" :max="10"></el-input-number>
</template>
<script>
  export default {
    data() {
      return {
        num: 1
      };
    },
    methods: {
      handleChange(value) {
        console.log(value)
      }
    }
  };
</script>

:::

Disabled

:::demo The disabled attribute accepts a boolean, and if the value is true, the component is disabled. If you just need to control the value within a range, you can add min attribute to set the minimum value and max to set the maximum value. By default, the minimum value is 0.

<template>
  <el-input-number v-model="num" :disabled="true"></el-input-number>
</template>
<script>
  export default {
    data() {
      return {
        num: 1
      }
    }
  };
</script>

:::

Steps

Allows you to define incremental steps.

:::demo Add step attribute to set the step.

<template>
  <el-input-number v-model="num" :step="2"></el-input-number>
</template>
<script>
  export default {
    data() {
      return {
        num: 5
      }
    }
  };
</script>

:::

Step strictly

:::demo The step-strictly attribute accepts a boolean. if this attribute is true, input value can only be multiple of step.

<template>
  <el-input-number v-model="num" :step="2" step-strictly></el-input-number>
</template>
<script>
  export default {
    data() {
      return {
        num: 2
      }
    }
  };
</script>

:::

Precision

:::demo Add precision attribute to set the precision of input value.

<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 The value of precision must be a non negative integer and should not be less than the decimal places of step. :::

Size

Use attribute size to set additional sizes with medium, small or mini.

:::demo

<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>

:::

Controls Position

:::demo Set controls-position to decide the position of control buttons.

<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

Attribute Description Type Accepted Values Default
model-value / v-model binding value number / undefined 0
min the minimum allowed value number -Infinity
max the maximum allowed value number Infinity
step incremental step number 1
step-strictly whether input value can only be multiple of step boolean false
precision precision of input value number
size size of the component string large/medium/small/mini large
disabled whether the component is disabled boolean false
controls whether to enable the control buttons boolean true
controls-position position of the control buttons string right -
name same as name in native input string
label label text string
placeholder placeholder in input string - -

Events

Event Name Description Parameters
change triggers when the value changes currentValue, oldValue
blur triggers when Input blurs (event: Event)
focus triggers when Input focuses (event: Event)

Methods

Method Description Parameters
focus focus the Input component -
select select the text in input element