Question

How to check if date1 is before date2 in JavaScript

Answer 1

const date1 = new Date('2025-06-01');
const date2 = new Date('2025-06-09');

if (date1.getTime() < date2.getTime()) {
  console.log('date1 is before date2');
} else {
  console.log('date1 is not before date2');
}



/*
run:

date1 is before date2

*/

 

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Answer 2

const date1 = new Date('2025-06-01');
const date2 = new Date('2025-06-09');

if (date1 < date2) {
  console.log('date1 is before date2');
} else {
  console.log('date1 is not before date2');
}



/*
run:

date1 is before date2

*/

 

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Answer 3

const date1 = new Date('2025-06-01');
const date2 = new Date('2025-06-09');

if (date1.toISOString() < date2.toISOString()) {
  console.log('date1 is before date2');
} else {
  console.log('date1 is not before date2');
}



/*
run:

date1 is before date2

*/

 

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