微信小程序实现多选框全选操作
本文实例为大家分享了微信小程序实现多选框全选的具体代码,供大家参考,具体内容如下
test.wxml
<view class="container"> <!-- 多选框 --> <view class="page-body"> <view class="page-section"> <view class="page-section-title">推荐展示样式</view> <view class="weui-cells weui-cells_after-title"> <checkbox-group bindchange="checkboxChange"> <label class="weui-cell weui-check__label" wx:for="{{items}}" wx:key="{{item.value}}"> <view class="weui-cell__hd"> <checkbox value="{{item.value}}" checked="{{item.checked}}" /> </view> <view class="weui-cell__bd">{{item.name}}</view> </label> </checkbox-group> </view> </view> </view> <text>全选</text> <checkbox-group bindchange="checkboxAll"> <checkbox checked="{{checkedAll}}" /> </checkbox-group> </view>
test.js
Page({ data: { checkedAll: "", items: [{ value: 'USA', name: '美国' }, { value: 'CHN', name: '中国', checked: 'true' }, { value: 'BRA', name: '巴西' }, { value: 'JPN', name: '日本' }, { value: 'ENG', name: '英国' }, { value: 'FRA', name: '法国' } ] }, checkboxChange(e) { console.log('checkbox发生change事件,携带value值为:', e.detail.value) const items = this.data.items const values = e.detail.value for (let i = 0, lenI = items.length; i < lenI; ++i) { items[i].checked = false for (let j = 0, lenJ = values.length; j < lenJ; ++j) { if (items[i].value === values[j]) { items[i].checked = true break } } } this.setData({ items }) if (e.detail.value.length == 6) { console.log(this.data.checkedAll); this.setData({ checkedAll: true }) }else{ this.setData({ checkedAll: "" }) } }, checkboxAll(e) { if (e.detail.value.length == 1) { // 全选状态 const items = this.data.items for (let i = 0; i < items.length; i++) { items[i].checked = true } this.setData({ items }) } else { // 没有全选状态 const items = this.data.items for (let i = 0; i < items.length; i++) { items[i].checked = false } this.setData({ items }) } } })
效果图:
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持我们。
赞 (0)