实例代码“Ctrl+/”提示“F11/ESC”全屏 返回 格式化 恢复 运行
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<!DOCTYPE html>
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<html>
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<head>
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<script src="https://libs.baidu.com/jquery/1.10.2/jquery.min.js">
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</script>
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<script>
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$(document).ready(function(){
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  $("div").focusin(function(){
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    $(this).css("background-color","#FFFFCC");
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  });
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  $("div").focusout(function(){
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    $(this).css("background-color","#FFFFFF");
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  });
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});
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</script>
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</head>
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<body>
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​
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<div style="border: 1px solid black;padding:10px;">
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First name: <input type="text"><br>
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Last name: <input type="text">
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</div>
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​
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<p>Click an input field to get focus. Click outside an input field to lose focus.</p>
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​
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</body>
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</html>