小程序对现有数据进行分组

    var datalist = [{
      "name": ‘张三‘,
      "type": 1
    }, {
      "name": ‘张五‘,
      "type": 1
    }, {
      "name": ‘张六‘,
      "type": 2
    }, {
      "name": ‘张七‘,
      "type": 5
    }, {
      "name": ‘张八‘,
      "type": 0
    }]
  
   var resList =this.groupByList(datalist);
    //如果中间有相差的，则强制建数据
    console.log(resList);
    console.log(resList[0]);
    console.log(resList[3]);
    

  //根据某个数字类型的字段对数组分组
  groupByList(datalist){
    let resList = [];//分组结果
    for (var i = 0; i < datalist.length; i++) {
      var thisindex = parseInt(datalist[i].type);//分组的索引 
      if (resList[thisindex] != undefined) {//如果数组中有值，则添加第二条数据
        resList[thisindex] = resList[thisindex].concat(datalist[i]);
      } else {//新建数组
        resList[thisindex] = [];
        resList[thisindex][0] = datalist[i];
      }
    }
    return resList
  },