小程序 - 数组匹配

根据2个数组的唯一id:playSign,将其中一个数组的值匹配到另一个数组中

• 二维数组

    activityInfo: [
      {
        categoryName:'类名1',
        brefInfoDtos:[
          { activityId: 1, activityName: "活动1", playSign: 1, imgUrl: ""},
          { activityId:2, activityName: "活动2", playSign:2, imgUrl: "" },
        ]
      },
      {
        categoryName: '类名2',
        brefInfoDtos: [
          { activityId: 1, activityName: "活动1", playSign: 1, imgUrl: "" },
          { activityId: 2, activityName: "活动3", playSign: 2, imgUrl: "" },
        ]
      }
    ]
    

• 数组二

list: [
      {
        playSign:1,
        name: '幸运九宫格',
        url: 'pages/jiugongge/jiugongge'
      }, {
        playSign:2,
        name: '刮刮乐',
        url: 'pages/guaguale/guaguale'
      }
    ]

二维数组循环，根据playSign的id筛选出数组2的url,然后追加到数组1中.

代码

  onLoad: function (options) {
    var that = this;
    //请求到商家活动信息
      if (that.data.activityInfo.length > 0) {
        var newArr = that.data.activityInfo;
        newArr.forEach(function (value, index) {
          value.brefInfoDtos.forEach(function (value, index) {
            var url = that.data.list.filter(v => {
              if (value.playSign == v.playSign) {
                return v;
              }
            })
            value.url = url[0].url;
          })
        })
        that.setData({
          'activityInfo': newArr
        })
      }
  },