javascript获取时间戳的5种方法详解

const timestamp = Date.parse(new Date());
console.log(timestamp);
 
//输出 1591669256000   13位

const timestamp = Math.round(new Date());
console.log(timestamp);
 
//输出 1591669961203   13位

const timestamp = (new Date()).valueOf();
console.log(timestamp);
 
//输出 1591670037603   13位
const timestamp = (new Date()).valueOf();
console.log(timestamp);
 
//输出 1591670037603   13位

const timestamp = new Date().getTime();
console.log(timestamp);
 
//输出 1591670068833   13位

const timestamp = +new Date();
console.log(timestamp);
 
//输出 1591670099066   13位

new Date(1472048779952)
Wed Aug 24 2016 22:26:19 GMT+0800 (中国标准时间)

function getLocalTime(n) {   
   return new Date(parseInt(n)).toLocaleString().replace(/:\d{1,2}$/,' ');   
}   
getLocalTime(1642471746435) //'2022/1/18 上午10:09 '

function getLocalTime(n) {   
    return new Date(parseInt(n)).toLocaleString().substr(0,14)
}   
getLocalTime(1642471746435) //'2022/1/18 上午10'

function  getLocalTime(n){
   return new Date(parseInt(n)).toLocaleString().replace(/年|月/g, "-").replace(/日/g, " ");
}
getLocalTime  (1642471746435)  //'2022/1/18 上午10:09:06'

function getData(n){
  n=new Date(n)
  return n.toLocaleDateString().replace(/\//g, "-") + " " + n.toTimeString().substr(0, 8)
}
getData(1642471746435) //'2022-1-18 10:09:06'

function getData(n) {
  let now = new Date(n),
    y = now.getFullYear(),
    m = now.getMonth() + 1,
    d = now.getDate();
  return y + "-" + (m < 10 ? "0" + m : m) + "-" + (d < 10 ? "0" + d : d) + " " + now.toTimeString().substr(0, 8);
}
getData(1642471746435) //'2022-1-18 10:09:06'