let date_ob = new Date(); format code example

Example 1: javascript format date

var options = { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric' };
var today  = new Date();

console.log(today.toLocaleDateString("en-US")); // 9/17/2016
console.log(today.toLocaleDateString("en-US", options)); // Saturday, September 17, 2016
console.log(today.toLocaleDateString("hi-IN", options));

Example 2: format date js

const t = new Date();
const date = ('0' + t.getDate()).slice(-2);
const month = ('0' + (t.getMonth() + 1)).slice(-2);
const year = t.getFullYear();
const hours = ('0' + t.getHours()).slice(-2);
const minutes = ('0' + t.getMinutes()).slice(-2);
const seconds = ('0' + t.getSeconds()).slice(-2);
const time = `${date}/${month}/${year}, ${hours}:${minutes}:${seconds}`;

output: "27/04/2020, 12:03:03"