item() 方法在 CSSValueList interface is used to retrieve a CSSValue by ordinal index.

The order in this collection represents the order of the values in the CSS style property. If the index is greater than or equal to the number of values in the list, this method returns null .

句法

var cssValue = cssValueList.item(index);
					

参数

index
An unsigned long representing the index of the CSS value within the collection.

返回值

A CSSValue object at the index position in the CSSValueList ,或 null if that is not a valid index.

规范

规范 状态 注释
Document Object Model (DOM) Level 2 Style Specification
The definition of 'CSSValueList.item' in that specification.
过时 初始定义

浏览器兼容性

The compatibility table on 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. 更新 GitHub 上的兼容性数据
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Chrome Edge Firefox Internet Explorer Opera Safari Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
item 弃用 Chrome 不支持 No Edge 不支持 No Firefox 不支持 1 — 62 IE ? Opera 不支持 No Safari ? WebView Android 不支持 No Chrome Android 不支持 No Firefox Android 不支持 4 — 62 Opera Android ? Safari iOS ? Samsung Internet Android 不支持 No

图例

不支持

不支持

兼容性未知 ?

兼容性未知

弃用。不要用于新网站。

弃用。不要用于新网站。

元数据

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