Web/API/CSSStyleDeclaration/length

The read-only property returns an integer that represents the number of style declarations in this CSS declaration block.

Syntax

var num = styles.length;

Value

An integer that provides the number of styles explictly set on the parent of the instance.

Example

The following gets the number of explicitly set styles on the following HTML element:

<div id="div1" style="margin: 0 10px; background-color: #CA1; font-family: monospace"></div>

JavaScript code:

var myDiv = document.getElementById('div1'); var divStyle = myDiv.style; var len = divStyle.length; // 6

Specifications

Specification	Status	Comment
CSS Object Model (CSSOM)The definition of 'CSSStyleDeclaration.length' in that specification.	Working Draft
Document Object Model (DOM) Level 2 Style SpecificationThe definition of 'CSSStyleDeclaration' in that specification.	Obsolete

Browser compatibility

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
length	Chrome Full support 1	Edge Full support 12	Firefox Full support 1	IE Full support Yes	Opera Full support Yes	Safari Full support 6	WebView Android Full support 4.4	Chrome Android Full support 18	Firefox Android Full support 4	Opera Android Full support Yes	Safari iOS Full support Yes	Samsung Internet Android Full support 1.0

Legend

Full support  

Full support

CSSStyleDeclaration.length by Mozilla Contributors is licensed under CC-BY-SA 2.5.