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• 句法
• 范例
• 规范
• 浏览器兼容性
• 相关话题

CSSStyleDeclaration.item() method interface returns a CSS property name from a CSSStyleDeclaration by index . This method doesn't throw exceptions as long as you provide arguments; the empty string is returned if the index is out of range and a TypeError is thrown if no argument is provided.

句法

var propertyName = style.item(index);
					

参数

• index is the index of the node to be fetched. The index is zero-based.

返回值

• propertyName 是 DOMString that is the name of the CSS property at the specified index.

JavaScript has a special simpler syntax for obtaining an item from a NodeList by index:

var propertyName = style[index];
					

范例

var style = document.getElementById('div1').style;
var propertyName = style.item(1); // or simply style[1] - returns the second style listed
					

规范

规范	状态	注释
CSS Object Model (CSSOM) The definition of 'CSSStyleDeclaration.item()' in that specification.	工作草案
Document Object Model (DOM) Level 2 Style Specification The definition of 'CSSStyleDeclaration' in that specification.	过时

浏览器兼容性

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. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
item	Chrome 1	Edge 12	Firefox 1	IE Yes	Opera Yes	Safari 6	WebView Android 4.4	Chrome Android 18	Firefox Android 4	Opera Android Yes	Safari iOS Yes	Samsung Internet Android 1.0

图例

完整支持

完整支持

元数据

• 最后修改： 2019 年 3 月 23 日

相关话题

1. CSS Object Model
2. CSSStyleDeclaration
3. 特性

   1. length
   2. parentRule
4. 方法

   1. getPropertyCSSValue()
   2. getPropertyPriority()
   3. getPropertyValue()
   4. item()
   5. removeProperty()
   6. setProperty()
5. Related pages for CSSOM

   1. AnimationEvent
   2. CSS
   3. CSSConditionRule
   4. CSSGroupingRule
   5. CSSKeyframeRule
   6. CSSKeyframesRule
   7. CSSMediaRule
   8. CSSNamespaceRule
   9. CSSPageRule
   10. CSSRule
   11. CSSRuleList
   12. CSSStyleRule
   13. CSSStyleSheet
   14. CSSSupportsRule
   15. CaretPosition
   16. LinkStyle
   17. MediaQueryList
   18. MediaQueryListListener
   19. Screen
   20. StyleSheet
   21. StyleSheetList
   22. TransitionEvent