format datetime with javascript code example

Example 1: javascript date format

const event = new Date(Date.UTC(2012, 11, 20, 3, 0, 0));

const options = {  year: 'numeric', month: 'short', day: 'numeric' };

console.log(event.toLocaleDateString('de-DE', options));
// expected output: Donnerstag, 20. Dezember 2012

console.log(event.toLocaleDateString('en-US', options));
// US format 


// In case you only want the month
console.log(event.toLocaleDateString(undefined, { month: 'short'}));
console.log(event.toLocaleDateString(undefined, { month: 'long'}));

Example 2: javascript format date time

function formatDate(date) {
    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;
    return date.getDate() + "/" + new Intl.DateTimeFormat('en', { month: 'short' }).format(date) + "/" + date.getFullYear() + " " + strTime;
}

var d = new Date();
var e = formatDate(d);

console.log(e); // example output: 11/Feb/2021 1:23 PM