js change value for input tag

To change the value of an input tag using JavaScript, you can use the `.value` property of the input element. For example, if you have an input element with the id of `myInput`, you can change its value using the following code:

document.getElementById('myInput').value = 'new value';

This will set the value of the input element to `new value`.

相关问题

el-input输入框自动生成标签

可以使用element-ui的el-tag组件来实现输入框自动生成标签。具体实现方法是在输入框的@change事件中获取输入框的值，然后将其添加到一个数组中，再使用v-for指令遍历数组，生成对应的标签。

示例代码如下：

<template>
  <div>
    <el-input v-model="inputValue" @change="handleInputChange"></el-input>
    <el-tag v-for="(tag, index) in tags" :key="index">{{ tag }}</el-tag>
  </div>
</template>

<script>
export default {
  data() {
    return {
      inputValue: '',
      tags: []
    }
  },
  methods: {
    handleInputChange() {
      if (this.inputValue) {
        this.tags.push(this.inputValue)
        this.inputValue = ''
      }
    }
  }
}
</script>

如何在下列代码中插入SwipeCell组件实现滑动删除商品功能。相应代码如下：<view class="goods-card"> <radio disabled="{{ goodsData.amount <= 0 }}" bind:tap="changeChecked" class="goods-card-radio" checked="{{ goodsData.amount <= 0 ? false : goodsData.checked }}" color="#ff6034" /> <van-card custom-class="flo-goods-card" style="flex: 1; height:calc(42vh - 50px)" tag="{{ goodsData.amount > 0 ? '' : '售磬' }}" price="{{ goodsData.price || '' }}" title="{{ goodsData.title || '' }}" thumb="{{ goodsData.showPictures || '' }}"> <view slot="num"> <van-stepper disabled="{{ goodsData.amount <= 0 }}" style="position: absolute; right: 0rpx; top: 75%;" input-width="42rpx" button-size="45rpx" theme="round" bind:change="changeValue" value="{{ goodsData.value }}" step="1" /> </view> <van-swipe-cell right-width="{{ 65 }}" left-width="{{ 65 }}"> <view slot="right">删除</view> </van-swipe-cell> </van-card> </view>

可以将 `<van-swipe-cell>` 组件插入到 `<van-card>` 组件中，代码如下：

<view class="goods-card">
  <radio disabled="{{ goodsData.amount <= 0 }}" bind:tap="changeChecked" class="goods-card-radio" checked="{{ goodsData.amount <= 0 ? false : goodsData.checked }}" color="#ff6034" />
  <van-card custom-class="flo-goods-card" style="flex: 1; height:calc(42vh - 50px)" tag="{{ goodsData.amount > 0 ? '' : '售磬' }}" price="{{ goodsData.price || '' }}" title="{{ goodsData.title || '' }}" thumb="{{ goodsData.showPictures || '' }}">
    <van-swipe-cell right-width="{{ 65 }}" left-width="{{ 65 }}">
      <view slot="right">删除</view>
      <view slot="default">
        <view slot="num">
          <van-stepper disabled="{{ goodsData.amount <= 0 }}" style="position: absolute; right: 0rpx; top: 75%;" input-width="42rpx" button-size="45rpx" theme="round" bind:change="changeValue" value="{{ goodsData.value }}" step="1" />
        </view>
      </view>
    </van-swipe-cell>
  </van-card>
</view>

需要注意的是，因为 `<van-swipe-cell>` 组件只能包含一个子元素，所以需要将 `<van-stepper>` 组件包裹在一个 `<view>` 元素中，再将其放入 `<van-swipe-cell>` 组件中。同时需要将 `<van-stepper>` 组件的 `slot` 属性设置为 `"num"`，以便正确显示。