Google CDN托管jQuery和本地回退

Posted 2021-02-26

<!-- jQuery Google CDN hsoted with local fallback, weird doc.write slashes explained here http://www.codehouse.com/javascript/articles/external/ -->
 
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.1/jquery.min.js"></script>
<script>
if (typeof jQuery == 'undefined') {
document.write('<script src="', 'js/jquery-1.4.1.min.js', '" type="text/JavaScript"></script>');
}
</script>