html
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>jquery</title> <script type="text/javascript" src="js/jquery-3.0.0.min.js"></script> <script type="text/javascript" src="js/try.js" ></script> </head> <body> <div></div> </body> </html>
js
$(document).ready(function(){
$("div").css({
width:"100px",
height:"100px",
backgroundColor:"blue"
});
});
效果：
原文：http://www.cnblogs.com/guangzhou11/p/7570250.html