JS synchronizes the local time with the server time

Be careful , The code uses angular Format method of time in , If you don't use it angular, You can find a way to format the time instead ！

1. First, get the time interval between local time and server time .( Here, assume that the time transmitted by the server is 2016-05-25 16:20:00)

var timeDiff=dateDiff($filter('date')(new Date(), 'yyyy-MM-dd HH:mm:ss'),'2016-05-25 16:20');
function dateDiff(date1,date2){
    return (new Date(date2))-(new Date(date1));
}

2. Each local time plus this time interval is the time of the server .

var ServerDate = +new Date()+timeDiff;

Of course, this is also flawed , That is the local time in the code 1 After the operation is artificially changed, the time is not the time of the server .