访问cdn无法访问的时候,访问源文件
<script type="text/javascript" src="http:/ajax.microsoft.com/ajax/jquery/jquery-1.9.1.min.js"></script> <script type="text/javascript"> if(typeof jQuery == 'undefined'){ document.write(unescape("%3Cscript src='Scripts/jquery.1.9.1.min.js' type='text/javascript'%3E%3C/script%3E")); } </script>
转自:http://blog.163.com/zhangmihuo_2007/blog/static/270110752014525111244306/