分别利用javascript的源码和jQuery来实现一个简单的选项卡，对比各自的步骤。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> <style> div{ display:none; 50px; height:50px; border:1px solid red; } .active{ display:block; } .back{ background:red; } </style> <script type="text/javascript" src="jquery-1.12.3.min.js"></script> <script> //javascript源码写 /*window.onload=function(){ var aInput=document.getElementsByTagName('input'); var aDiv=document.getElementsByTagName('div'); for(var i=0;i<aInput.length;i++){ aInput[i].index=i; aInput[i].onclick=function(){ for(var i=0;i<aInput.length;i++){ aInput[i].className=''; aDiv[i].style.display='none'; } this.className='back'; aDiv[this.index].style.display='block'; } } };*/ //jQuery写 $(function(){ $('input').click(function(){ $('input').attr('class',''); $('div').css('display','none'); $(this).attr('class','back'); $('div').eq($(this).index()).css('display','block'); }); }); </script> <script> </script> </head> <body> <input type="button" value="1" /> <input type="button" value="2" /> <input type="button" value="3" /> <div class="active">111</div> <div>222</div> <div>333</div> </body> </html>
