简短而简单:

new Date().toLocaleTimeString(); // 11:18:48 AM
//---
new Date().toLocaleDateString(); // 11/16/2015
//---
new Date().toLocaleString(); // 11/16/2015, 11:18:48 PM

4小时后(使用milisec: sec==1000):

new Date(new Date().getTime() + 4*60*60*1000).toLocaleTimeString(); // 3:18:48 PM or 15:18:48

2天前:

new Date(new Date().getTime() - 2*24*60*60*1000).toLocaleDateString() // 11/14/2015

var d = new Date("2011-04-20T09:30:51.01");
d.getHours(); // => 9
d.getMinutes(); // =>  30
d.getSeconds(); // => 51

or

var d = new Date(); // for now
d.getHours(); // => 9
d.getMinutes(); // =>  30
d.getSeconds(); // => 51

var hours = date.getHours();
        var minutes = date.getMinutes();
        var ampm = hours >= 12 ? 'pm' : 'am';
        hours = hours % 12;
        hours = hours ? hours : 12; // the hour '0' should be '12'
        minutes = minutes < 10 ? '0'+minutes : minutes;
        var strTime = hours + ':' + minutes + ' ' + ampm;
        console.log(strTime);
        $scope.time = strTime;

        date.setDate(date.getDate()+1);
        month = '' + (date.getMonth() + 1),
        day = '' + date.getDate(1),
        year = date.getFullYear();
        if (month.length < 2) month = '0' + month;
        if (day.length < 2) day = '0' + day;
        var tomorrow = [year, month, day].join('-');
        $scope.tomorrow = tomorrow;

Date.toLocaleTimeString()选项

Date.toLocaleTimeString()函数可以接收一个选项参数来格式化输出

以下是一些可用的选项

new Date().toLocaleTimeString([], { timeStyle: "full" })   // 4:43:58 AM Pacific Standard Time
new Date().toLocaleTimeString([], { timeStyle: "long" })   // 4:43:58 AM PST
new Date().toLocaleTimeString([], { timeStyle: "medium" }) // 4:43:58 AM
new Date().toLocaleTimeString([], { timeStyle: "short" })  // 4:43 AM

或者你可以用这些值指定小时、分钟和秒的表示形式:

“数字”(例如，1) “2位数”(例如，01)

new Date().toLocaleTimeString([], { hour: '2-digit', minute: "2-digit" }) 
// 04:43 AM

或者使用hour12: true或false设置12小时时间

更多细节请看 Date.toLocaleTimeString()参数 Intl.DateTimeFormat()选项

Try

new Date().toLocaleTimeString().replace("/.*(\d{2}:\d{2}:\d{2}).*/", "$1");

Or

new Date().toTimeString().split(" ")[0];

你可以这样做。

const date = new date (); const time = date.toTimeString()。分割(' ')[0].split(“:”); Console.log (time[0] + ':' + time[1])