微信小程序js文件改变参数并在视图上及时更新【推荐】

<view>  <text>{{str}}</text></view><button bindtap="change">改变</button>

Page({ data: {  str:'早上好' }, change: function() {  this.setData({   str:"晚上好"  }) }})

<view>  <text>{{array[0].text}}</text></view><button bindtap="change">改变</button>

Page({ data: {  array: [{text: '早上好'}], }, change: function() {  this.setData({   'array[0].text':'晚上好'  }) }})

<view>  <block wx:for="array" wx:key="index">    <text>{{item.text}}</text>    <button bindtap="change" data-index="index">改变</button>  </block></view><button bindtap="change">改变</button>

Page({  data:{    array:[      {text:'1111'},      {text:'2222'},      {text:'3333'}    ]  },  change:function(e){    let param = {};    let string = "array["+e.target.dataset.index+"].text;    param[string] = '0000';    this.setData(param);  }})