datetime - Comment obtenir un timetamp en JavaScript

91

+ new Date() 

if (!Date.now) {     Date.now = function() { return new Date().getTime(); } } 

Math.floor(Date.now() / 1000) 

Date.now() / 1000 | 0 

new Date().getTime() 

Math.round(new Date().getTime()/1000) 

new Date().valueOf() 

var timeStampInMs = window.performance && window.performance.now && window.performance.timing && window.performance.timing.navigationStart ? window.performance.now() + window.performance.timing.navigationStart : Date.now();  console.log(timeStampInMs, Date.now());

89

+new Date 

Date.now() 

80

var unix = Math.round(+new Date()/1000); 

var milliseconds = new Date().getTime(); 

65

var time = Date.now || function() {   return +new Date; };  time(); 

57

Date.now() /1000 |0 

Math.floor(Date.now() /1000); 

new Date/1e3|0 

if (!Date.now) {     Date.now = function now() {         return new Date().getTime();     }; } 

Math.floor(Date.now() / 1000) 

const relativeTime = (() => {     const start = Date.now();     return () => Date.now() - start; })();