微信小程序 动态绑定事件并实现事件修改样式

微信小程序 动态绑定事件并实现事件修改样式

实例代码

wxml

<scroll-view class="reportTypeScroll" scroll-x="true" scroll-left="{{toLeftNum}}">
 <block wx:for-items="{{reportTypeList}}" wx:key="{{index}}">
  <text type="primary" style="width:{{itemWidth}}rpx;" bindtap="bind{{item.id}}" data-typeid="{{item.id}}" class="{{currentId==item.id?'clickSel':'removeSel'}}">{{item.name}}</text>
 </block>
</scroll-view>

js

var reportTypeList = [
 { name: "日报1", id: "1" },
 { name: "目录2", id: "2" },
 { name: "季报3", id: "3" },
 { name: "月报4", id: "4" },
 { name: "日报5", id: "5" },
 { name: "目录6", id: "6" },
 { name: "季报7", id: "7" },
 { name: "月报8", id: "8" },
 { name: "日报9", id: "9" },
 { name: "目录10", id: "10" },
 { name: "季报11", id: "11" },
 { name: "月报12", id: "12" }] 

var pageObject = {
 data: {
  reportTypeList: reportTypeList,
  num: 0,
  toLeftNum: 0,
  itemWidth: 150
 }
} 

for (var i = 0; i < reportTypeList.length; i++) {
 (function (item) {
  pageObject['bind' + item.id] = function (e) {
   var id = parseInt(e.currentTarget.dataset.typeid) 

   this.setData({
    currentId: id
   })
  }
 })(reportTypeList[i])
} 

Page(pageObject)

wxss

/**index.wxss**/ 

.reportTypeScroll {
 margin: 40px 0px 20px 0px;
 white-space: nowrap;
 display: flex;
} 

.clickSel {
 color: red;
} 

.removeSel {
 color: black;
} 

text {
 height: 150rpx;
 display: inline-block;
 text-align: center;
}

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