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                # jQuery UI API - :data() Selector ## 所屬類別 [選擇器(Selectors)](ref-selectors.html) | [UI 核心(UI Core)](ref-ui-core.html) ## 用法 **描述:**選擇數據已存儲在指定的鍵下的元素。 ``` jQuery( ":data(key)" ) ``` | 參數 | 描述 | | --- | --- | | key | 數據的鍵。 | 表達式 `$( "div:data(foo)")` 匹配一個通過 `.data( "foo", value )` 存儲數據的 `div`。 ## 實例 選擇帶有數據的元素,改變它們的背景顏色。 ``` <!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>:data() Selector 實例</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> ```
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