JavaScript · Language basics

if / else

Runs a block when a condition is truthy, with optional else branches.

Syntax
if (condition) { … } else { … }

Example

Try it

More in this group

Arrow function Chained comparison Comma operator Default parameter destructuring for…in for…of Function declaration

Learn this in the course

Reference pages are the quick answer. The course explains the why, shows the full example and ends with a challenge.

Open the course