How to Compare Two Dates in JavaScript

Use the getTime() Method

You can simply use the getTime() method to compare two dates in JavaScript. This method returns the number of milliseconds since the ECMAScript epoch (January 1, 1970 at 00:00:00 UTC).

Let's take a look at the following example to understand how it basically works:

// Sample dates
var date1 = new Date("August 15, 1994");
var date2 = new Date("December 10, 2022 04:30:00");
var date3 = new Date("2022-12-10T04:30:00");

// Performing comparison
console.log(date1.getTime() == date2.getTime()); // Prints: false
console.log(date1.getTime() == date3.getTime()); // Prints: false
console.log(date2.getTime() == date3.getTime()); // Prints: true
console.log(date2.getTime() != date3.getTime()); // Prints: false
console.log(date1.getTime() > date2.getTime());  // Prints: false
console.log(date1.getTime() < date2.getTime());  // Prints: true
console.log(date1.getTime() != date2.getTime()); // Prints: true