通过数组里的时间重新排序数组

var timeArr = [
            {"Date": "2019-07-07 10:00:00",'con':'11'},
            {"Date": "2018-07-09 1:00:00",'con':'22'},
            {"Date": "2019-07-07 4:00:00",'con':'33'},
            {"Date": "2018-07-31 2:00:00",'con':'44'}
        ];

        var newArr = [];

        for(var i = 0; i < timeArr.length; i++){
            newDate = (timeArr[i].Date).replace(new RegExp("-", "gm"), "/"); 
            HaoMiao = (new Date(newDate)).getTime(); //得到毫秒数
            newArr.push(timeArr[i])
            newArr[i].time = HaoMiao;
        }

        var arr = newArr.sort(sortDate);
  　　　//arr就是最终的排序后的数组
        console.log(arr)
        
        function sortDate(a,b){
            return a.time-b.time
        }