:data() Selector · jQuery UI API 中文文档

# :data() Selector # :data() Selector Categories: [Selectors](http://www.css88.com/jquery-ui-api/category/selectors/ "View all posts in Selectors") | [UI Core](http://www.css88.com/jquery-ui-api/category/ui-core/ "View all posts in UI Core") **Description:** 选择数据已存储在指定的键下的元素。 - #### jQuery( ":data(key)" ) **key:** 数据的键。表达式 `$( "div:data(foo)")` 匹配一个通过 `.data( "foo", value )` 存储数据的 `<div>`。 ## Example: #### 选择带有数据的元素，改变它们的背景颜色。 ``` <!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>data demo</title> <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css"> <style> div { width: 100px; height: 100px; border: 1px solid #000; float: left; } </style> <script src="//code.jquery.com/jquery-1.10.2.js"></script> <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script> </head> <body> <div id="one"></div> <div id="two"></div> <div id="three"></div> <script> $( "#one" ).data( "color", "blue" ); $( "#three" ).data( "color", "green" ); $( ":data(color)" ).each(function() { var element = $( this ); element.css( "backgroundColor", element.data( "color" ) ); }); </script> </body> </html> ```