date add 1 hour javascript

1//JS
2function addHoursToDate(date, hours) {
3  return new Date(new Date(date).setHours(date.getHours() + hours));
4}
5
6//TS
7function addHoursToDate(date: Date, hours: number): Date {
8  return new Date(new Date(date).setHours(date.getHours() + hours));
9}
10
11let myDate = new Date();
12
13console.log(myDate)
14console.log(addHoursToDate(myDate,2))

1Date.prototype.addHours = function(h) {
2  this.setTime(this.getTime() + (h*60*60*1000));
3  return this;
4}