看了很多别人写的tab切换效果感觉都只是div+js去切换已存在的！有的是添加或删除tab的但是太麻烦了还要改js文件你说是不是很不方便呢，我这个直接修改页面里面的参数就可以了！所以我自己就写了这个功能!谢谢，如果转载请注明出处(http://www.ok22.org)幸凡在线学习网
http://www.ok22.org/art_detail.aspx?id=118(直接预览)
你自己可以添加菜单但是要注意的是CreateDiv(tabid,url,name) 第一个tabid不能重复，想添加多少个都行。但是太多了不知道会成什么样你自己看！
效果图如下:
<!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> <title>前端设计js+Tab切换可关闭+添加并自动判断是否已打开自动切换当前状态</title> <style> body,html{height:100%;} #div_pannel{height:800px;} *{margin:0;padding:0;} #div_tab{background:#fff url(http://www.ok22.org/images/t_tab_bg.gif) repeat-x 0 bottom;height:26px;padding:15px 15px 0;margin-bottom:10px;} #div_tab li{float:left;text-align:center;position:relative;list-style:none;} #div_tab li{background:url(http://www.ok22.org/images/t_tab_uselectbg.gif);margin-top:3px;height:23px;} #div_tab li span{background:url(http://www.ok22.org/images/t_tab_uselectbg.gif);height:23px;line-height:23px;} #div_tab li.crent{background:url(http://www.ok22.org/images/t_tab_selectbg.gif);margin-top:2px;height:24px;} #div_tab li.crent span{background:url(http://www.ok22.org/images/t_tab_selectbg.gif);height:24px;line-height:24px;} #div_tab li,#div_tab li.crent{color:#fff;background-repeat:no-repeat;background-position:0 0;} #div_tab li span,#div_tab li.crent span{display:inline-block;padding:0 36px 0 15px;background-repeat:no-repeat;background-position:right bottom;} #div_tab li .menua{color:#000;font-size:12px; text-decoration:none;position:relative;} #div_tab li.crent .menua,#div_tab li .menua:hover{color:#ff0000;} #div_tab li .win_close,#div_tab li.crent .win_close{width:14px;height:14px;position:absolute;top:4px;right:5px;cursor:pointer;display:block;overflow:hidden;background:url(http://www.ok22.org/images/t_delete_ico.gif) no-repeat;} #div_tab li .win_close{background-position:0 -14px;} #div_tab li .win_close:hover{background-position:0 0;} .clearfix:after {content:"."; display:block;height:0;clear:both; visibility:hidden;} *html .clearfix{height:1%;} *+html .clearfix{height:1%;} .clearfix{display:inline-block;} /* Hide from IE Mac */ .clearfix {display:block;} </style> <script type="text/javascript"> function CreateDiv(tabid, url, name) { ///如果当前tabid存在直接显示已经打开的tab if (document.getElementById("div_" + tabid) == null) { //创建iframe var box = document.createElement("iframe"); box.id = "div_" + tabid; box.src = url; box.height = "100%"; box.frameBorder = 0; box.width = "100%"; document.getElementById("div_pannel").appendChild(box); //遍历并清除开始存在的tab当前效果并隐藏其显示的div var tablist = document.getElementById("div_tab").getElementsByTagName('li'); var pannellist = document.getElementById("div_pannel").getElementsByTagName('iframe'); if (tablist.length > 0) { for (i = 0; i < tablist.length; i++) { tablist[i].className = ""; pannellist[i].style.display = "none"; } } //创建li菜单 var tab = document.createElement("li"); tab.className = "crent"; tab.id = tabid; var litxt =
