CSSStyleDeclaration.length

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2015.

这是一个只读的属性,它返回一个指定元素声明过的样式个数

语法

var num = styles.length;

指定元素上明确声明过的样式属性个数。

示例

获取下面 HTML 元素明确设置过的属性个数:

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

JavaScript 代码:

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

规范

Specification
CSS Object Model (CSSOM)
# dom-cssstyledeclaration-length

浏览器兼容性

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
length

Legend

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Full support
Full support