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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www./TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www./1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>無標(biāo)題文檔</title> </head> <body> <div id = "test" style = "width:250px;height:100px;"> sssssssssssss </div> <input type = "button" value = "toggleClassTest" onclick = "toggleClassTest();" /> </body> </html> <style type="text/css"> div.testClass{ background-color:gray; } </style> <script type="text/javascript"> function hasClass(obj, cls) { return obj.className.match(new RegExp('(\\s|^)' + cls + '(\\s|$)')); } function addClass(obj, cls) { if (!this.hasClass(obj, cls)) obj.className += " " + cls; } function removeClass(obj, cls) { if (hasClass(obj, cls)) { var reg = new RegExp('(\\s|^)' + cls + '(\\s|$)'); obj.className = obj.className.replace(reg, ' '); } } function toggleClass(obj,cls){ if(hasClass(obj,cls)){ removeClass(obj, cls); }else{ addClass(obj, cls); } } function toggleClassTest(){ var obj = document. getElementById('test'); toggleClass(obj,"testClass"); } </script> |
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