1. #('*') 選擇全部元素。 javascript
2. #('div > *')選擇全部的div元素 css
<html> <head> <title>jQuery universal example</title> <script type="text/javascript" src="jquery-1.9.1.js"></script> <style type="text/css"> div{ padding:8px; } </style> </head> <body> <h1>jQuery universal example</h1> <div class="div-class1"> This is div-class1 <div class="div-class2"> This is div-class1 </div> <div class="div-class3"> This is div-class3 </div> </div> <br/><br/> <button>*</button> <button>div > *</button> <button id="refresh">Refresh</button> <script type="text/javascript"> $("button").click(function () { var str = $(this).text(); $(str).css("border", "1px solid #ff0000"); }); $('#refresh').click(function() { location.reload(); }); </script> </body> </html>