Source @ github

typeof

typeof — Check the type of a variable.

Description

typeof mixed variable

Parameters

Name Description Type Default Optional
variable The variable to get the type of. mixed No

Examples

Example #1 – typeof example
var b = new Boolean(true); // Create a new boolean object. console.log(typeof b); // object console.log(typeof true); // boolean console.log(typeof 'jsman'); // string console.log(typeof undefined); // undefined console.log(typeof null); // object console.log(typeof 1234); // number console.log(typeof NaN); // number console.log(typeof Infinity); // number

External references