微信小程序wxml列表渲染原理解析

<view>
　　<block wx:for="{{products}}" wx:for-item="item" wx:key="index">
　　　　<view>{{index+1}}:{{item.name}}</view>
　　</block>
</view>

Page({
 data: {
  message: "hello world",
  products: [{
    name: "商品A"
   },
   {
    name: "商品B"
   },
   {
    name: "商品C"
   },
   {
    name: "商品D"
   },
   {
    name: "商品E"
   }
  ]
 }

})

<view wx:for="{{parentList}}">
 {{item.id}}
 <view wx:for="{{item.childList}}" wx:for-item="items">
 {{items.name}}{{items.aount}}
 </view>

data: {
input_data: [
{ id: 1, unique: "unique1" },
{ id: 2, unique: "unique2" },
{ id: 3, unique: "unique3" },
{ id: 4, unique: "unique4" },
]
}
//test.wxml
<input value="id:{{item.id}}" wx:for="{{input_data}}" wx:key="unique" />

data: {
numberArray: [1, 2, 3, 4],
stringArray:['aaa','c','fff','good']
}
//test.wxml
<input value="id:{{ item }}" wx:for="{{numberArray}}" wx:key="this" />
<input value="id:{{ item }}" wx:for="{{stringArray}}" wx:key="this" />
},