format for Date() in js 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));
console.log(event.toLocaleDateString('en-US', options));
console.log(event.toLocaleDateString(undefined, { month: 'short'}));
console.log(event.toLocaleDateString(undefined, { month: 'long'}));
Example 2: Javascript format date / time
var date = new Date('2014-8-20');
console.log((date.getMonth()+1) + '/' + date.getDate() + '/' + date.getFullYear());