javascript function add one Hours to timestamp code example

Example 1: date add 1 hour javascript

//JS
function addHoursToDate(date, hours) {
  return new Date(new Date(date).setHours(date.getHours() + hours));
}

//TS
function addHoursToDate(date: Date, hours: number): Date {
  return new Date(new Date(date).setHours(date.getHours() + hours));
}

let myDate = new Date();

console.log(myDate)
console.log(addHoursToDate(myDate,2))

Example 2: add 2 for hours in date timestamp js

Date.prototype.addHours= function(h){
    this.setHours(this.getHours()+h);
    return this;
}

alert(new Date().addHours(4));