js数据封装处理

var arr = [ ???{ ???????id: "1", ???????date: "2018-07-27", ???????time: "10:00-12:00", ???????schedule: "开幕式" ???}, ???{ ???????id: "2", ???????date: "2018-07-27", ???????time: "12:00-14:00", ???????schedule: "世界杯||今日看点||法国队" ???}, ???{ ???????id: "3", ???????date: "2018-07-28", ???????time: "10:00-12:00", ???????schedule: "奥尼尔" ???}, { ???????id: "4", ???????date: "2018-07-28", ???????time: "15:00-17:00", ???????schedule: "阿拉巴||巴西||俄罗斯" ???}]var obj = {};//重新封装对象for (var i = 0; i < arr.length; i++) { ???var item = arr[i];//item ???if (!obj[item[‘date‘]]) { ???????var _arr = []; ???????_arr.push(item); ???????obj[item["date"]] = _arr; ???} else { ???????obj[item["date"]].push(item); ???}}console.log(obj)//对象的遍历for (var key in obj) { ???console.log(obj[key]);}var tab = {aa: 11111};//console.log(tab.aa);//console.log(tab[‘aa‘]);