students:[
                   {name:'cjk',age:'38',date_time:'2020-08-11 08:08:01'},
                   {name:'xxf',age:'29',date_time:'2020-08-16 11:08:01'},
                   {name:'zk',age:'36',date_time:'2020-08-13 13:08:01'},
                   {name:'zk112',age:'32',date_time:'2020-08-10 15:08:01'},
                ]
                var newDate = currentDate.getDate();
                var data2 = {name:'zk00',age:'26',date_time:newDate};
                this.students.push(data2);
                this.students.map(mapItem => {
                    console.log('aaa====>: ' + JSON.stringify(mapItem))
                });
                var data = this.students.sort(function(a, b) {
                    var x = a.date_time.replace(/:/g, "").replace(/-/g, "").replace(" ", "")
                    var y = b.date_time.replace(/:/g, "").replace(/-/g, "").replace(" ", "")
                    return ((x<y)?-1:((x>y)?1:0));
                });

                data.map(mapItem => {
                    console.log('bbb====>: ' + JSON.stringify(mapItem))
                });
                

 

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