Js Type Conversion — Free Javascript Tutorial
Learn Js Type Conversion in Javascript with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.
TL;DR: Learn Js Type Conversion 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
Js Type Conversion in Javascript
JS has two kinds of type change: explicit conversion (you do it on purpose) and implicit coercion (JS does it automatically).
String to Number: `Number("42")` → 42. `parseInt("42px")` → 42. `parseFloat("3.14")` → 3.14. `+"42"` → 42 (unary +).
Number to String: `String(42)` → "42". `(42).toString()` → "42". Template literal: `\`${42}\``.
To Boolean: `Boolean(0)` → false. `Boolean("")` → false. `Boolean(null)` → false. `Boolean([])` → TRUE (empty array is truthy!).
Learn Js Type Conversion step by step with Syllab's free interactive Javascript tutorial — runnable code examples, practice exercises and instant AI feedback, all free with no signup. Explore the full Javascript course →