微信小程序为什么数组不能push

可以的

index.wxml

<view wx:for='{{list}}' wx:key="index">

<view>{{item.a}}</view>

</view>

<button bindtap='add'>添加</button>

index.js里面

list: [

{ a: 1 },

{ a: 1 },

{ a: 1 },

{ a: 1 }

],

},

add(e) {

var obj = { a: 99 }

this.data.list.push(obj)

this.setData({

list: this.data.list

})

},

var a = [["a","b","c"],["d","e"],["1","2","3"]]

var b= ["4","5","6"]

a.push(b)

console.log(a)

直接用push()就可以了

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