简单的函数，以获得日期和时间分离，并与时间和日期HTML输入兼容的格式

function formatDate(date) {
  var d         = new Date(date),
      month = '' + (d.getMonth() + 1),
      day   = '' + d.getDate(),
      year  = d.getFullYear();

  if (month.length < 2) month = '0' + month;
  if (day.length < 2) day = '0' + day;

  return [year, month, day].join('-');
}

function formatTime(date) {
        var hours   = new Date().getHours() > 9 ? new Date().getHours() : '0' + new Date().getHours()
        var minutes = new Date().getMinutes() > 9 ? new Date().getMinutes() : '0' + new Date().getMinutes()

        return hours + ':' + minutes
}

赋值给变量并显示。

time = new Date();

var hh = time.getHours();
var mm = time.getMinutes();
var ss = time.getSeconds() 

document.getElementById("time").value = hh + ":" + mm + ":" + ss;

Try

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

Or

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

var today = new Date();  //gets current date and time
var hour = today.getHours();         
var minute = today.getMinutes();
var second = today.getSeconds();

这对我来说很有效，但这取决于你点击Date()时得到的结果:

Date().slice(16,-12)

看看这些Date方法…

更大字符串- https://开发者.mozilla.org/en- us/web /javascrips/web/javascript/javascript / global_objects/date/愚蠢的字符串 totime弦- https://开发者.mozllla.org/en - us/docs/web/javascrips/web/javascript/com// global_objects/date/totimeststststststg