CSSStyleDeclaration.item()
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.
CSSStyleDeclaration.item()
通过下标从 CSSStyleDeclaration
返回一个 CSS 属性值。只要传入参数这个方法就不会抛出异常;当传入的下标越界时会返回空字符串,当未传入参数时会抛出一个 TypeError
。
语法
var propertyName = style.item(index);
参数
index
是需要查找节点的索引,索引下标从零开始。
Return value
propertyName
是一个DOMString
,是在特定索引位置下的属性的名称。
使用以下的 javascript 语法可以通过索引从 style 的节点列表中获取对应值:
var propertyName = style[index];
范例
js
var style = document.getElementById("div1").style;
var propertyName = style.item(1); // or simply style[1] - returns the second style listed
规范
Specification |
---|
CSS Object Model (CSSOM) # dom-cssstyledeclaration-item |
浏览器兼容性
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
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item |
Legend
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- Full support
- Full support
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