复制代码代码如下: function getElementsByClass(searchClass,tagName) { var classElements = new Array(); if ( tagName == null ) tagName = '*'; var els = document.getElementsByTagName(tagName); var elsLen = els.length; var pattern = new RegExp("(^|\s)" searchClass "(\s|$)"); for (i = 0, j = 0; i < elsLen; i ) { if ( pattern.test(els[i].className) ) { classElements[j] = els[i]; j ; } } return classElements; } function ccMarquee(className){ var a=getElementsByClass(className); for (i = 0; i < a.length; i ) { a[i].innerHTML="<marquee>" a[i].innerHTML "</marquee>"; } }window.onload = function () { ccMarquee("ccMarquee"); }