Example: Compare Value of Two Dates

// program to compare value of two dates
// create two dates
let d1 = new Date();
let d2 = new Date();

// comparisons
let compare1 = d1 < d2;
console.log(compare1);

let compare2 = d1 > d2;
console.log(compare2);

let compare3 = d1 <= d2;
console.log(compare3);

let compare4 = d1 >= d2;
console.log(compare4);


let compare5 = d1.getTime() === d2.getTime();
console.log(compare5);

let compare6 = d1.getTime() !== d2.getTime();
console.log(compare6);

Output

false
false
true
true
true
false

In the above example, the new Date() constructor is used to create a date object.

The new Date() gives the current date and time.

let d1 = new Date();
console.log(time); // Fri Aug 28 2020 09:19:40 GMT+0545 (+0545)

You can then directly compare these two dates using comparisons >, <, <=, or >=.

However, to use comparisons like ==, !=, ===, or !==, you have to use date.getTime().

The getTime() method returns the number of milliseconds from midnight of January 1, 1970 (EcmaScript epoch) to the specified date.

let d1 = new Date().getTime();
console.log(d1); // 1598585951699