<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script> <script type="text/javascript"> window.jQuery || document.write(unescape('%3Cscript%20type%3D%22text/javascript%22%20src%3D%22//libs.baidu.com/jquery/2.0.3/jquery.min.js%22%3E%3C/script%3E')); </script>
这样子即可实现如果jQuery未能加载成功，则自动加载百度的jquery库，做到万无一失了。
您可能感兴趣的文章: