uniapp 使用wx:for

UniApp 是一个基于 Vue.js 的跨平台开发框架，可以同时开发小程序、App、H5 等多个平台的应用。在 UniApp 中，可以使用 `v-for` 指令来实现类似于小程序中的 `wx:for` 功能。

具体使用 `v-for` 来遍历数组或对象的语法如下：

<template>
  <view>
    <text v-for="(item, index) in list" :key="index">{{ item }}</text>
  </view>
</template>

<script>
export default {
  data() {
    return {
      list: ['item1', 'item2', 'item3']
    }
  }
}
</script>

在上述代码中，我们使用 `v-for` 遍历了一个名为 `list` 的数组，并将每个元素渲染为 `<text>` 组件。`item` 表示当前遍历的元素，`index` 表示当前元素的索引，通过 `:key` 绑定了每个元素的唯一标识。

需要注意的是，在 UniApp 中，由于支持多平台开发，使用 `v-for` 遍历组件时，要确保被遍历的组件对于不同平台都有相应的支持。

相关问题

<view class="answer-list"> <view class="answer" wx:for="{{curQuestion.answerList}}" wx:key="index" bindtap="answerClick" data-index="{{index}}"> <view style="background:{{curQuestion.answerFlag && item.realFlag?'#1CC18D':(curQuestion.answerFlag && !item.realFlag && curQuestion.curIndex == index ? '#FA6C6C':'#fff')}};color:{{curQuestion.answerFlag && (item.realFlag || curQuestion.curIndex == index)?'#fff':'#000'}}" class="answer-item"> {{item.name}}</view> <view class="icon-box" wx:if="{{curQuestion.answerFlag && (item.realFlag || curQuestion.curIndex == index)}}"> <text wx:if="{{curQuestion.answerFlag && !item.realFlag && curQuestion.curIndex == index}}" class="cuIcon-roundclosefill choose-fail"></text> <text wx:if="{{curQuestion.answerFlag && item.realFlag}}" class="cuIcon-roundcheckfill choose-success"></text> </view> </view> </view> 转uniapp写法

<view class="answer-list">
<view class="answer" v-for="(item, index) in curQuestion.answerList" :key="index" @tap="answerClick" :data-index="index">
<view :style="{background: curQuestion.answerFlag && item.realFlag ? '#1CC18D' : (curQuestion.answerFlag && !item.realFlag && curQuestion.curIndex == index ? '#FA6C6C' : '#fff'), color: curQuestion.answerFlag && (item.realFlag || curQuestion.curIndex == index) ? '#fff' : '#000'}" class="answer-item">
{{item.name}}
</view>
<view class="icon-box" v-if="curQuestion.answerFlag && (item.realFlag || curQuestion.curIndex == index)">
<text v-if="curQuestion.answerFlag && !item.realFlag && curQuestion.curIndex == index" class="cuIcon-roundclosefill choose-fail"></text>
<text v-if="curQuestion.answerFlag && item.realFlag" class="cuIcon-roundcheckfill choose-success"></text>
</view>
</view>
</view>

lifetimes: { attached() { let that = this let userPhoneStr = '' let userEmailStr = '' let peopleNameStr = '' let userPhone = '' let userPhoneInvoice = wx.getStorageSync('memberMsg').memberMobile userPhone = userPhoneInvoice let arr = userPhoneInvoice.split('') for (let x = 0; x < arr.length; x++) { if ((x >= 0 && x <= 2) || (x >= 7 && x < arr.length)) { userPhoneStr += arr[x] } else { userPhoneStr += '*' } } if (wx.getStorageSync('userEmailInvoice') != '') { userEmailStr = wx.getStorageSync('userEmailInvoice') } if (wx.getStorageSync('userNameInvoice') != '') { peopleNameStr = wx.getStorageSync('userNameInvoice') } this.setData({ userPhoneStr, userEmailStr, peopleNameStr, userPhone }) wx.getSystemInfo({ success: e => { that.setData({ pageHeight: e.windowHeight, invoiceModalMaxHeight: e.windowHeight * 0.6 }) if (that.data.isiPhoneX) { that.setData({ invoiceModalScrollMaxHeight: e.windowHeight * 0.6 - 120 }) } else { that.setData({ invoiceModalScrollMaxHeight: e.windowHeight * 0.6 - 90 }) } } }) } }, 改成uniapp

可以将该段代码转换为uni-app的语法：

export default {
  onReady() {
    let that = this;
    let userPhoneStr = '';
    let userEmailStr = '';
    let peopleNameStr = '';
    let userPhone = '';
    let userPhoneInvoice = uni.getStorageSync('memberMsg').memberMobile;
    userPhone = userPhoneInvoice;
    let arr = userPhoneInvoice.split('');
    for (let x = 0; x < arr.length; x++) {
      if ((x >= 0 && x <= 2) || (x >= 7 && x < arr.length)) {
        userPhoneStr += arr[x];
      } else {
        userPhoneStr += '*';
      }
    }
    if (uni.getStorageSync('userEmailInvoice') != '') {
      userEmailStr = uni.getStorageSync('userEmailInvoice');
    }
    if (uni.getStorageSync('userNameInvoice') != '') {
      peopleNameStr = uni.getStorageSync('userNameInvoice');
    }
    this.setData({
      userPhoneStr,
      userEmailStr,
      peopleNameStr,
      userPhone
    });
    uni.getSystemInfo({
      success: e => {
        that.setData({
          pageHeight: e.windowHeight,
          invoiceModalMaxHeight: e.windowHeight * 0.6
        });
        if (that.data.isiPhoneX) {
          that.setData({
            invoiceModalScrollMaxHeight: e.windowHeight * 0.6 - 120
          });
        } else {
          that.setData({
            invoiceModalScrollMaxHeight: e.windowHeight * 0.6 - 90
          });
        }
      }
    });
  }
}

注意，我将`attached`改为了`onReady`，因为在uni-app中没有`attached`这个生命周期函数。另外，我使用了`uni.`代替了`wx.`，因为uni-app是跨平台框架，需要使用uni-app提供的API。