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小程序复选框+优化+单选全选多选删除操作

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小程序复选框太挫了，肺腑之言

最近写小程序的时候，遇到多选框的问题！并不是多选框不好操作，而是小程序的多选框实在太丑了好吗！本来的初衷是想修改一下默认样式就OK了，从边框 宽度 到背景 却在最后选择出来的额icon上无从下手！没办法自己手写checked的效果采用的是icon图标。感兴趣的可以往下看看！

先来看看效果图

实现的原理也非常的简单，数据渲染到列表，绑定事件修改列表项的checked属性，不建议直接操作data的数据，当要操作的时候可以定义一个局部变量，局部操作完成后，在赋值给data，利用数据双向绑定的特性，就完成所有的操作

wxml

<view class='header1'>
  <view class='header'>
    <view class='header_con flex_between'>
      <view class='left'>
        共计{{items.length}}件商品
      </view>
      <view class='right flex_end'>
        <view wx:if="{{!management_good}}" class='flex_center' bindtap='management'>
          管理
        </view>
        <view wx:if="{{management_good}}" class='flex_center' bindtap='finish_management'>
          完成
        </view>
      </view>
    </view>
  </view>
</view>
<view class='header2'>
  <view class='header'>
    <view class='header_con flex_between'>
      <input value='类目一' disabled='{{title_disabled}}' focus="{{!title_disabled}}">
      </input>
      <view class='right flex_end'>
        <block wx-if="{{title_disabled}}">
          <image src='../../../image/hotel/delete.png' bindtap='change_classname'></image>
        </block>
        <block wx-if="{{!title_disabled}}">
          <view class='flex_center' bindtap='finish_classname'>
            完成
          </view>
        </block>
      </view>
    </view>
  </view>
</view>
<view class='onlinechoose'>
  <view class='hotel_list flex_center' wx:for="{{items}}" wx:key="items" wx:for-item="i" data-id="{{index}}" bindtap='select'>
    <view class='list_cons flex_start'>
      <view wx:if="{{management_good}}" class='lefts'>
        <block wx-if="{{!i.checked}}">
          <view class='icon_none'></view>
        </block>
        <block wx-if="{{i.checked}}">
          <icon type="success" size="30" color="red" />
        </block>
      </view>
      <image src='../../../image/hotel/demoimg.jpg'></image>
      <view class='right'>
        <view class='name'>
          {{i.name}}
        </view>
        <view class='list1 flex_between'>
          <view class='left'>
            <view class='condition1'>
              16㎡|双人床|含早
            </view>
            <view class='condition2'>
              <block>
                间数：10
              </block>
              <block>
                间数：2
              </block>
            </view>
          </view>
        </view>
        <view class='list1 flex_between'>
          <view class='left'>
            <view class='condition2'>
              类目一
            </view>
          </view>
        </view>
      </view>
    </view>
  </view>
</view>
<view class='bottom flex_between' wx:if="{{management_good}}">
  <view class='left flex_start'>
    <block wx:if="{{select_all}}">
      <view bindtap='select_none' class='flex_start'>
        <icon type="success" size="30" color="red" />
        <view>
          取消全选
        </view>
      </view>
    </block>
    <block wx:if="{{!select_all}}">
      <view bindtap='select_all' class='flex_start'>
        <view class='select_none'>
        </view>
        <view>
          全选
        </view>
      </view>
    </block>
  </view>
  <view class='right flex_end'>
    <view style='text-align:right'>
      <view class='all'>
        共选中{{middlearr.length}}件商品
      </view>
    </view>
    <view bindtap='deleteitem' class='sure'>
      删除
    </view>
  </view>
</view>

下面是我的代码 由于wxss我是在app.wxss和当前文件都有的没太多的整理全都贴上去了，在这里多说一句小程序是支持弹性布局的，当你命名好几个弹性盒子的类名后，将会发现css将会减少很大的工作量

wxss

.header1{
  background-color: #f5f5f5;
}
.header2{
  background-color: #ffffff;
}
.header {
  width: 100%;
  height: 80rpx;
  border-bottom: 1rpx solid #d6d6d6;
}
.header .header_con {
  width: 700rpx;
  height: 80rpx;
  margin: 0 auto;
  color: #333;
  font-size: 30rpx;
}
.header .header_con image{
  width: 44rpx;
  height: 44rpx;
}
.header .header_con .right{
  color: #ff4965;
}
.bottom{
  width: 100%;
  height: 100rpx;
  border-top: 1rpx solid #d6d6d6;
  background-color: #fff;
  position: fixed;
  left: 0rpx;
  bottom: 0rpx;
}
.bottom .left{
  margin-left: 25rpx;
}
.bottom .left .select_none{
  width: 60rpx;
  height: 60rpx;
  border: 1rpx solid #d6d6d6;
  border-radius: 50%;
}
.bottom .right .all{
  color: #ff830f;
  font-size: 26rpx;
}
.bottom .right .gray{
  color: #666666;
  font-size: 22rpx;
}
.bottom .right .sure{
  margin-left: 22rpx;
  width: 220rpx;
  height: 100rpx;
  line-height: 100rpx;
  text-align: center;
  background-color: #ff4965;
  color: #fff;
}

/*列表*/
.onlinechoose{
  width: 750rpx;
  margin-top: 15rpx;
  background-color: #ffffff;
  font-size: 32rpx;
}
.onlinechoose .hotel_list{
  width: 750rpx;
  height: 260rpx;
  border-bottom: 1rpx solid #d6d6d6;
  background-color: #ffffff;
}
.onlinechoose .hotel_list .icon_none{
  width: 60rpx;
  height: 60rpx;
  border: 1rpx solid #d6d6d6;
  border-radius: 50%;
}
.onlinechoose .hotel_list .list_cons{
  width: 700rpx;
  height: 200rpx;
}
.onlinechoose .list_cons .lefts{
  width: 80rpx;
}
.onlinechoose .list_cons image{
  width: 200rpx;
  height: 200rpx;
  margin-right: 25rpx;
}
.list_cons .right{
  width: 395rpx;
  height: 200rpx;
}
.list_cons .right .name{
  font-size: 32rpx;
  color: #333333;
  font-weight: 700;
  letter-spacing: 3rpx;
  margin-bottom: 20rpx;
}
.list_cons .right .list1{
    margin-bottom: 17rpx;
}
.list_cons .right .list1 .condition1{
  font-size: 28rpx;
  color: #999999;
  margin-bottom: 15rpx;
}
.list_cons .right .list1 .condition2{
  font-size: 24rpx;
  color: #999999;
}
.list_cons .right .list1 .act{
  color: #2d8622;
}
.list_cons .right .list1 .r{
  font-size: 24rpx;
  color: #ff4965;
}
.list_cons .right .list1 .big{
  font-size: 32rpx;
}
.list_cons .right .lists2{
  height: 36rpx;
   line-height: 36rpx;
   font-size: 22rpx;
}
.list_cons .right .lists2 .left{
  width: 162rpx;
  text-align: center; 
  color: #ff4965;
  border: 1rpx solid #ff4965;
  box-sizing: border-box;
  border-radius: 5rpx;
}
.list_cons .right .lists2 .right2{
  color: #999999;
}
.flex_center{
  display: flex;
  display: -webkit-flex;
  justify-content: center;
  align-items: center;
}
.flex_between{
  display: flex;
  display: -webkit-flex;
  justify-content: space-between;
  align-items: center;
}
.flex_start{
  display: flex;
  display: -webkit-flex;
  justify-content: flex-start;
  align-items: center;
}
.flex_end{
  display: flex;
  display: -webkit-flex;
  justify-content: flex-end;
  align-items: center;
}

js

js纯手写虽然不太好吧！但是功能实现了，万恶 的checkbox魔鬼
初始化

data: {
    imgUrl: imgUrl,
    title_disabled:true,//控制修改表头名字
    management_good:false,
    select_all:false,
    middlearr:[],
    items: [
      { name: '1', checked: false},
      { name: '2', checked: false},
      { name: '3', checked: false},
      { name: '4', checked: false},
      { name: '5', checked: false},
      { name: '6', checked: false},
    ],
  },
  // 改变类目的名字
  change_classname:function(){
     let that = this;
     that.setData({
       title_disabled: !that.data.title_disabled,
     });
    //  这里自动获取焦点
  },
  finish_classname: function () {
    let that = this;
    that.setData({
      title_disabled: !that.data.title_disabled,
    })
  },
  // 管理商品
  management:function(){
    let that = this;
    that.setData({
      management_good: true,
    })
  },
  finish_management:function(){
    let that = this;
    that.setData({
      management_good:false,
    })
  },
  // 选择
  select:function(e){
    var that = this;
    let arr2 = [];
    if (that.data.management_good == false){
       return;
    }else{
      var arr = that.data.items;
      var index = e.currentTarget.dataset.id;
      arr[index].checked = !arr[index].checked;
      console.log(arr);

      for(let i=0;i<arr.length;i++){
         if(arr[i].checked){
           arr2.push(arr[i])
         }
      };
      that.setData({
        items: arr,
        middlearr:arr2
      })
    }
  },
  // 删除
  deleteitem:function(){
    var that = this;
    let arr = that.data.items;
    let arr2 = [];
    console.log(arr);
    for(let i=0;i<arr.length;i++){
      if (arr[i].checked == false){
        arr2.push(arr[i]);
      }
    }
    that.setData({
      items:arr2,
      middlearr:[]
    })
  },
  // 全选
  select_all:function(){
    let that = this;
    that.setData({
      select_all: !that.data.select_all
    })
    if (that.data.select_all){
      let arr = that.data.items;
      let arr2 = [];
      for (let i = 0; i < arr.length; i++) {
        if (arr[i].checked == true) {
          arr2.push(arr[i]);
        }else{
          arr[i].checked = true;
          arr2.push(arr[i]);
        }
      }
      that.setData({
        items: arr2,
        middlearr:arr2
      })
    }
  },
  // 取消全选
  select_none:function(){
    let that = this;
    that.setData({
      select_all: !that.data.select_all
    })
    let arr = that.data.items;
    let arr2 = [];
    for (let i = 0; i < arr.length; i++) {
        arr[i].checked = false;
        arr2.push(arr[i]);
    }
    that.setData({
      items: arr2,
      middlearr:[]
    })
  },