<!-- 错题本 -->
<view class="contarner">
  <view class="content">
    <view class="title flex-def flex-cCenter flex-zBetween">
      <view>错题本(<text>{{list.length}}</text>)题</view>
      <view class="editBtn" bindtap="showSelIcon">{{iconStatu"{{iconStatu">
      <view bindtap="toggleSel" class="item flex-def flex-cCenter flex-zBetween" wx:for="{{list}}" wx:key="{{index}}" data-id='{{item.id}}'>
        <view class="flex-def flex-cCenter flex-zBetween" data-id='{{item.id}}'>
          <icon wx:if="{{iconStatu}}" type="success" size="20" color="{{item.selStatu" data-id='{{item.id}}' />
          <view data-id='{{item.id}}'>
            <text data-id='{{item.id}}'>{{item.letter}}-</text>
            <text data-id='{{item.id}}'>正确：{{item.nickname}}</text>
          </view>
        </view>
        <view data-id='{{item.id}}'>
          <text class="wrongCount" data-id='{{item.id}}'>23</text>
          <text class="wrongText" data-id='{{item.id}}'>错误次数</text>
        </view>
      </view>
    </view>
  </view>
  <view class="footer" wx:if="{{iconStatu}}" bindtap="delItem">
    已掌握,移除错题本({{selList.length}})
  </view>
</view>

// pages/wrongPage/index.js
Page({
 /**
  * 页面的初始数据
  */
 data: {
   list: [
     { "id": 0, "letter": "Michael", "statu": true, "nickname": "适北", "nickname2": "路高用" },
      { "id": 1, "letter": "Michael", "statu": false, "nickname": "统常方你", "nickname2": "况土达主" },
       { "id": 2, "letter": "Michael", "statu": true, "nickname": "国照而本", "nickname2": "温量" },
       { "id": 3, "letter": "Michael", "statu": true, "nickname": "省全广", "nickname2": "正关水" },
       { "id": 4, "letter": "Michael", "statu": false, "nickname": "十性位化", "nickname2": "选低离" },
       { "id": 5, "letter": "Michael", "statu": true, "nickname": "织起", "nickname2": "叫意" },
       { "id": 6, "letter": "Michael", "statu": true, "nickname": "已太边", "nickname2": "与今压" },
       { "id": 7, "letter": "Michael", "statu": true, "nickname": "石情声", "nickname2": "马法该无" },
       { "id": 8, "letter": "Michael", "statu": true, "nickname": "青例气", "nickname2": "先素有" },
       { "id": 9, "letter": "Michael", "statu": true, "nickname": "或少", "nickname2": "无格历何" },
       { "id": 10, "letter": "Michael", "statu": true, "nickname": "命构近九", "nickname2": "几被非外" },
       { "id": 11, "letter": "Michael", "statu": true, "nickname": "拉物采", "nickname2": "价分斗" },
       { "id": 12, "letter": "Michael", "statu": true, "nickname": "教斗适立", "nickname2": "算非音" },
       { "id": 13, "letter": "Michael", "statu": true, "nickname": "历治", "nickname2": "相五" },
       { "id": 14, "letter": "Michael", "statu": true, "nickname": "是治际", "nickname2": "你表手" },
       ] ,
   selColor: '#999',
   selList: [],
   iconStatu: false,
 },
 /**
  * 生命周期函数--监听页面加载
  */
 onLoad: function (options) {
   let dataList = this.data.list;
   dataList.map(function (value) {
     value.selStatu = false;
   })
 },
 // 选中
 toggleSel(e) {
   if (this.data.iconStatu) {
     let selArr = this.data.selList;
     let selId = e.target.dataset.id || e.currentTarget.dataset.id;
     let dataList = this.data.list;
     let index = this.data.selList.indexOf(selId);
     if (index < 0) {
       selArr.push(e.target.dataset.id);
       dataList.map((value) => {
         if (value.id == selId) {
           value.selStatu = true
          }
       })
     } else {
       dataList.map((value) => {
         if (value.id == selId) {
           value.selStatu = false
         }
       })
       selArr.splice(index, 1)
     }
     this.setData({
       selList: selArr,
       list: dataList
     })
   }
 },
  showSelIcon() {
    this.setData({
      iconStatu: !this.data.iconStatu
    })
  },
  // 删除错题
  delItem() {
    let arr = this.data.list;
    let selArr = this.data.selList;
    for (let i = 0; i < selArr.length; i++) {
      arr = arr.filter((value,index) => {
        return value.id != selArr[i]
      })
    }
    for (let i = 0; i < arr.length; i++) {
      arr[i].selStatu = false
    }
    this.setData({
      list: arr,
      selList: [],
    })
  }
})

@import "../../css/common.wxss";
.content {
  padding: 20rpx 30rpx;
}
.title {
  font-size: 40rpx;
  color: #fff;
  padding-bottom: 37rpx;
}
.title .editBtn {
 font-size: 30rpx;
}
.item {
  box-sizing: border-box;
  width: 100%;
  background-color: #464688;
  border-radius: 10rpx;
  padding: 40rpx 30rpx;
  margin-top: 20rpx;
}
.item icon {
  margin-right: 20rpx
}
.item text {
  display: block;
  font-size: 28rpx;
  color: #fff;
}
.item .wrongCount {
 font-size: 36rpx;
 font-family: "PingFang SC";
 color: rgb(255, 216, 80);
 text-align: center;
}
.item .wrongText {
 font-size: 22rpx;
 font-family: "PingFang SC";
 color: rgb(100, 98, 173);
 text-align: center;
}
.footer {
  position: fixed;
  bottom: 0;
  background-color: #fff;
  width: 100%;
  height: 100rpx;
  line-height: 100rpx;
  text-align: center;
}
.margin-b {
  margin-bottom: 100rpx;
}
page {
height: 100%;
 display: block;
 background-attachment: fixed;
 background:#000;
 /* min-height: 100%; */
}
/* 头像 */
.head {
 width: 136rpx;
 height: 136rpx;
 border-radius: 50%;
 border: 2rpx solid #ffbf50;
}
.hide {
display: none!important;
}
/* 清除浮动 */
.clearfix:after{
  content: ' ';
  display: block;
  clear: both;
  visibility:hidden;
  line-height: 0;
  height:0;
}
/* flex类名 */
/* 定义 */
.flex-def { display: -webkit-box; display: -moz-box; display: -ms-flexbox; display: -webkit-flex; display: flex;}
/* 主轴居中 */
.flex-zCenter { -webkit-box-pack: center; -moz-justify-content: center; -webkit-justify-content: center; justify-content: center; }
/* 主轴两端对齐 */
.flex-zBetween { -webkit-box-pack: justify; -moz-justify-content: space-between; -webkit-justify-content: space-between; justify-content: space-between; }
/* 主轴end对齐 */
.flex-zEnd { -webkit-box-pack: end; -moz-justify-content: flex-end; -webkit-justify-content: flex-end; justify-content: flex-end; }
/* 主轴start对齐 */
.flex-zStart { -webkit-box-pack: start; -moz-justify-content: start; -webkit-justify-content: start; justify-content: start; }
.flex-zSpace { justify-content: space-around }
/* 侧轴居中 */
.flex-cCenter { -webkit-box-align: center; -moz-align-items: center; -webkit-align-items: center; align-items: center; }
/* 侧轴start对齐 */
.flex-cStart { -webkit-box-align: start; -moz-align-items: start; -webkit-align-items: start; align-items: start; }
/* 侧轴底部对齐 */
.flex-cEnd { -webkit-box-align: end; -moz-align-items: flex-end; -webkit-align-items: flex-end; align-items: flex-end; }
/* 侧轴文本基线对齐 */
.flex-cBaseline { -webkit-box-align: baseline; -moz-align-items: baseline; -webkit-align-items: baseline; align-items: baseline; }
/* 侧轴上下对齐并铺满 */
.flex-cStretch { -webkit-box-align: stretch; -moz-align-items: stretch; -webkit-align-items: stretch; align-items: stretch; }
/* 主轴从上到下 */
.flex-zTopBottom { -webkit-box-direction: normal; -webkit-box-orient: vertical; -moz-flex-direction: column; -webkit-flex-direction: column; flex-direction: column; }
/* 主轴从下到上 */
.flex-zBottomTop { -webkit-box-pack: end; -webkit-box-direction: reverse; -webkit-box-orient: vertical; -moz-flex-direction: column-reverse; -webkit-flex-direction: column-reverse; flex-direction: column-reverse; }
/* 主轴从左到右 */
.flex-zLeftRight { -webkit-box-direction: normal; -webkit-box-orient: horizontal; -moz-flex-direction: row; -webkit-flex-direction: row; flex-direction: row; }
/* 主轴从右到左 */
.flex-zRightLeft { -webkit-box-pack: end; -webkit-box-direction: reverse; -webkit-box-orient: horizontal; -moz-flex-direction: row-reverse; -webkit-flex-direction: row-reverse; flex-direction: row-reverse; }
/* 是否允许子元素伸缩 */
.flex-item { -webkit-box-flex: 1.0; -moz-flex-grow: 1; -webkit-flex-grow: 1; flex-grow: 1; }
.flex-wrap { flex-wrap: wrap; }
/* 加号 */