小程序-之全选和反选

##在小程序中有时会遇到全选和反选 全选较为常见,而反选就不常见.

之前用checkbox-group,包围 住checkbox,导致反选和全选 总是有点问题,于是便舍弃了checkbox-group.

<view class="list-control">
  <view class="fl" @tap="selAll">全选</view>
  <view class="fl" @tap="selReverse">反选</view>
</view>
<view class="weui-cells color-333">
  <block wx:for="{{list}}" wx:key="id">
    <view class="weui-cell" hover-class="weui-cell_active" @tap="toggle({{index}})">
      <view class="weui-cell__hd" style="width:2.4em;">
        <checkbox checked="{{item.checked}}"/>
      </view>
      <view class="weui-cell__bd">
      {{item.name}}
      </view>
    </view>
  </block>
</view>
 
data = {
  count:''//总体数目
  selectCount : ''//选择数目
}
 
//全择全部
selAll () {
  this.list.forEach(one => {
  one.checked = !0
  })
  this.selectCount = this.count
},
 
//反选
selReverse () {
  this.list.forEach(one => {
  one.checked = !one.checked
  })
  this.selectCount = this.count - this.selectCount
},
 
 
 
////注意列表中的check是我们自己新加的字段,在接口中取到该数组时,记得先处理一下
将其设置为false.

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转载自www.cnblogs.com/whh-16/p/9705915.html
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