小程序自定义组件的实现方法（代码）

File：threecolgrid.js

// components/threeColumnGrid/threecolgrid.jsComponent({  /**   * 组件的属性列表   */  properties: {    // 传入的数据    booksData:{      type: Array,      value:[]    },    // grid的外边距    mainMargin:{      type: Number,      value: 5    },    // grid的内边距    mainPadding:{      type:Number,      value:10    },    // 行间距    rowSpace:{      type:Number,      value:20    },    // 列间距    colSpace:{      type:Number,      value:7    }  },  /**   * 组件的初始数据   */  data: {  },  /**   * 组件的方法列表   */  methods: {    checkIn:function(e){      console.log(e.currentTarget.dataset)      // 触发action事件，triggerEvent函数接受三个值：事件名称、数据、选项值        this.triggerEvent('action', e.currentTarget.dataset, {})     }  }})

<!--components/threeColumnGrid/threecolgrid.wxml--><!-- <view class='main-content'> -->  <view class='bookbox' style='padding:{{mainPadding}}rpx;margin:{{mainMargin}}rpx;'>    <block wx:for="{{booksData}}" wx:key="{{item.id}}">      <view class='bookinfo' style='margin-bottom: {{rowSpace}}rpx;'>        <image src='{{item.url}}' mode="widthFix" style='width:{{(740 - 2*mainPadding - 2*mainMargin)/3 - colSpace*3}}rpx;'></image>        <view class="title" style='width:{{(740 - 2*mainPadding - 2*mainMargin)/3 - colSpace*3}}rpx;'>{{item.title}}</view>        <view class='actionBar' style='width:{{(740 - 2*mainPadding - 2*mainMargin)/3 - colSpace*3}}rpx;'>          <block wx:if="{{item.status == 0}}">            <view class='bookstatus disable'>暂缺货</view>            <view bindtap='checkIn' data-bookid='{{item.id}}' data-status='{{item.status}}' class='iconfont icon-219-heart icon'></view>          </block>          <block wx:else>            <view class='bookstatus enable'>可借阅</view>            <view bindtap='checkIn' data-bookid='{{item.id}}' data-status='{{item.status}}' class='iconfont icon-059-cart icon'></view>          </block>                  </view>      </view>    </block>  </view><!-- </view> -->

/* components/threeColumnGrid/threecolgrid.wxss */@import "../../iconfont.wxss";/* .main-content{  background: #FFF;  margin-top: 155rpx;  padding:10rpx;} */.bookbox{  display: flex;  flex-direction: row;  justify-content: space-between;  flex-wrap:wrap;  background: #FFF;}.bookbox .bookinfo{  display: flex;  flex-direction: column;  justify-content: center;  align-items: center;  /* border: 1rpx solid #f5a32d; */}.bookbox .bookinfo image{  display: flex;  /* 调节图书列 */  /* width:220rpx;  */  border-top-left-radius: 10rpx;  border-top-right-radius: 10rpx}.bookbox .bookinfo .title{  display: flex;  flex-wrap: wrap;  font-size: small;  margin-bottom: 5rpx;  /* 调节图书列 */  /* width:300rpx; */  /* width:220rpx; */  height: 70rpx;}.bookbox .bookinfo .actionBar{  display: flex;  justify-content: space-between;  align-items: center;  padding: 0rpx 5rpx 5rpx 5rpx;  font-size: smaller;  /* width:200rpx; */}.bookbox .bookinfo .actionBar .bookstatus{  display: flex;  border-radius: 10rpx;  padding:0rpx 5rpx;}.bookbox .bookinfo .actionBar .enable{  color: #FFF;  background-color: #f5a32d;}.bookbox .bookinfo .actionBar .disable{  color: #FFF;  background-c软件开发
olor: #727171;}.bookbox .bookinfo .actionBar .icon{  font-size: 15pt;  color: #facea7;}.bookinfo-empty{  display: flex;  flex-direction: column;  align-items: center;  padding: 5rpx;  width:230rpx;}

使用组件

  //事件处理函数  getCheckValues: function(e){    console.log('checkbox发生change事件，携带value值为：', e.detail)  },

{  "usingComponents": {    "three-col-grid":"/components/threeColumnGrid/threecolgrid"  },}

  <view class='test'>    <three-col-grid booksData="{{BookList}}" bind:action="getCheckValues"></three-col-grid>  </view>              
              

            
html5