JavaScript · Collections, storage and utilities

Hoisting

Function declarations are hoisted with their body; let and const are hoisted but uninitialised until the declaration runs.

javascriptRunnable example javascript course

Syntax

declarations move to the top

Example

Try it

console.log(typeof greet);
function greet() { return "hi"; }

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