Js Date Math — Free Javascript Tutorial

Learn Js Date Math in Javascript with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.

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TL;DR: Learn Js Date Math in Javascript with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.

Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated Jul 14, 2026

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Js Date Math in Javascript

Math object: `Math.round()`, `Math.floor()`, `Math.ceil()`, `Math.abs()`, `Math.sqrt()`, `Math.pow()`, `Math.max()`, `Math.min()`, `Math.random()` (0 to 1).

Random integer between a and b (inclusive): `Math.floor(Math.random() * (b-a+1)) + a`.

Date object: `new Date()` — current date/time. `new Date("2024-01-15")` — specific date.

Getting parts: `.getFullYear()`, `.getMonth()` (0-11), `.getDate()`, `.getHours()`, `.getDay()` (0=Sunday).

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