js实现仿百度风云榜可重复多次调用的TAB切换选项卡效果

2015-08-31 15:55作者：yezheng

本文实例讲述了js实现仿百度风云榜可重复多次调用的TAB切换选项卡效果。分享给大家供大家参考。具体如下：

这是一款可在同一页面中多次调用的TAB选项卡代码，仿百度风云榜的TAB切换效果，用到了几张修饰图片，请顺着代码下载所需的图片，然后上传到你的网站中，修改代码内的路径就可以用了。

运行效果截图如下：

具体代码如下：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<head>

<title>仿百度风云榜TAB切换</title>

<style>

body,div,h5,ul,li{margin:0;padding:0;}

body{font:12px/1.5 Arial;}

li{list-style:none;}

a:link,a:visited{color:#333;text-decoration:none;}

a:hover{text-decoration:underline;}

#wrap{width:836px;border:3px solid #1972C0;border-width:3px 0;margin:10px auto;}

#list{overflow:hidden;zoom:1;margin-left:-10px;}

#wrap .item{display:inline;float:left;width:270px;padding-bottom:10px;border:1px solid #EBEBEB;margin:10px 0 10px 10px;}

#wrap .item .tab{position:relative;height:25px;border-bottom:1px solid #CCC;margin:8px;}

#wrap .item .tab h5{position:absolute;left:10px;font-size:14px;}

#wrap .item .tab .switchBtn{position:absolute;top:3px;right:0;}

#wrap .item .tab .switchBtn a{float:left;width:15px;height:15px;margin-left:5px;overflow:hidden;text-indent:-999px;background:url(images/icon_arr.gif) no-repeat;outline:none;}

#wrap .item .tab .switchBtn a.prev{background-position:0 -25px;}

#wrap .item .tab .switchBtn a.prevNot{background-position:0 0;cursor:default;}

#wrap .item .tab .switchBtn a.next{background-position:right -25px;}

#wrap .item .tab .switchBtn a.nextNot{background-position:right 0;cursor:default;}

#wrap .item .tab ul{position:absolute;top:-2px;left:50px;width:160px;height:28px;overflow:hidden;}

#wrap .item .tab ul li{float:left;cursor:pointer;line-height:26px;padding:0 8px;}

#wrap .item .tab ul li.current{cursor:text;color:#E45E2E;font-weight:700;border:1px solid #CCC;border-bottom-color:#FFF;}

#wrap .item .items{display:none;background:url(images/icon_num.gif) 15px 4px no-repeat;padding:0 15px;}

#wrap .item .items a{color:#3A64B0;}

#wrap .item .items li{height:24px;line-height:24px;padding-left:20px;border-bottom:1px solid #EBEBEB;}

#wrap .item .btn{height:22px;margin-top:10px;}

#wrap .item .btn a{float:right;width:74px;height:22px;overflow:hidden;margin-right:15px;text-indent:-9999px;background:url(images/icon_btn.gif) no-repeat;}

#wrap .item .btn a:hover{background-position:0 -22px;}

#copyright{color:#9A9A9A;text-align:center;}

#copyright a{color:#FFF;padding:2px 5px;border-radius:10px;background:#9A9A9A;}

</style>

var fgm = {

$: function(id) {

return typeof id === "object" ? id : document.getElementById(id);

$$: function(tagName, oParent) {

return (oParent || document).getElementsByTagName(tagName);

$$$: function(className, element, tagName) {

var i = 0, aClass = [], reClass = new RegExp("(^|s)" + className + "(s|$)"), aElement = fgm.$$(tagName || "*", element || document);

for (i = 0; i < aElement.length; i++) reClass.test(aElement[i].className) && aClass.push(aElement[i]);

return aClass;

index: function(element) {

var aChildren = element.parentNode.children, i;

for(i = 0; i < aChildren.length; i++) if(aChildren[i] === element) return i;

return -1;

on: function(element, type, handler) {

return element.addEventListener ? element.addEventListener(type, handler, !1) : element.attachEvent("on" + type, handler);

bind: function(object, handler) {

return function() {

return handler.apply(object, arguments);

};

}

};

function Tab(id) {

var that = this;

this.obj = fgm.$(id);

this.oTab = fgm.$$$("tab", this.obj)[0];

this.aTab = fgm.$$("li", this.oTab);

this.oSwitch = fgm.$$$("switchBtn", this.oTab)[0];

this.oPrev = fgm.$$("a", this.oSwitch)[0];

this.oNext = fgm.$$("a", this.oSwitch)[1];

this.aItems = fgm.$$$("items", this.obj);

this.iNow = 0;

fgm.on(this.oSwitch, "click", fgm.bind(this, this.fnClick));

fgm.on(this.oTab, "mouseover", fgm.bind(this, this.fnMouseOver));

}

Tab.prototype = {

fnMouseOver: function(ev) {

var oEv = ev || event,

oTarget = oEv.target || oEv.srcElement;

oTarget.tagName.toUpperCase() === "LI" && (this.iNow = fgm.index(oTarget));

this.fnSwitch();

fnClick: function(ev) {

var oEv = ev || event,

oTarget = oEv.target || oEv.srcElement,

switch(fgm.index(oTarget)) {

case 0:

if(oTarget.className == "prev") {

this.aTab[this.iNow].style.display = "block";

this.iNow--;

};

break;

case 1:

if(oTarget.className == "next") {

for(i = 0; i < this.iNow; i++) this.aTab[i].style.display = "none";

this.iNow++;

};

break;

};

this.aTab[this.iNow].style.display = "block";

this.fnSwitch();

fnSwitch: function() {

for(var i = 0; i < this.aTab.length; i++) (this.aTab[i].className = "", this.aItems[i].style.display = "none");

this.aTab[this.iNow].className = "current";

this.aItems[this.iNow].style.display = "block";

this.oPrev.className = this.iNow == 0 ? "prevNot" : "prev";

this.oNext.className = this.iNow == this.aTab.length - 1 ? "nextNot" : "next";

}

};

//应用

fgm.on(window, "load", function() {

var aItem = fgm.$$$("item"),

i = 0;

for(; i < aItem.length; i++) new Tab(aItem[i]);

});

</script>

</head>

<body>

<ul>

</ul>

</div>

<li><a href="#">北京四中网校</a></li>

<li><a href="#">中国统一教育网</a></li>

<li><a href="#">101远程教育网</a></li>

<li><a href="#">黄冈中学网校</a></li>

</ul>

<li><a href="#">韦博国际英语</a></li>

<li><a href="#">华尔街英语</a></li>

</ul>

</div>

<ul>

</ul>

</div>

<li><a href="#">北京四中网校</a></li>

<li><a href="#">中国统一教育网</a></li>

<li><a href="#">101远程教育网</a></li>

<li><a href="#">黄冈中学网校</a></li>

</ul>

<li><a href="#">韦博国际英语</a></li>

<li><a href="#">华尔街英语</a></li>

</ul>

</div>

<ul>

</ul>

</div>

<li><a href="#">北京四中网校</a></li>

<li><a href="#">中国统一教育网</a></li>

<li><a href="#">101远程教育网</a></li>

<li><a href="#">黄冈中学网校</a></li>

</ul>

<li><a href="#">韦博国际英语</a></li>

<li><a href="#">华尔街英语</a></li>

</ul>

</div>

</div>

</body>

</html>

希望本文所述对大家的javascript程序设计有所帮助。