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                利用循環將數組內數據渲染在頁面上 在index.js存放數據 ~~~ Page({ data:{ arr:[1,2,3] } }); ~~~ 在index.xml渲染數據 ~~~ <block wx:for="{{arr}}" wx:key="index"> <view>{{item}}</view> </block> ~~~ > 在wxml中使用for循環: 注意的是wx:for循環的是一個 數組,wx:key為循環時數組的下標,index為默認值,item為要循環的數組的項
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