一个js封装的不错的选项卡效果代码_javascript技巧

this.style = new Array(); //["","",""]
this.overStyle = false; //选项是否有over, out变换样式事件，样式为this.style[2]
this.overChange = false; //内容是否用over, out直接激活
this.menu = false; //菜单类型
this.nesting = [false,false,"",""]; //是否嵌套，后面2个参数是指定menu,info的子集深度所用id

this.auto = [false, 1000]; //自动滚动[true,2000]
this.timerID = null; //自动播放的
this.menutimerID = null; //菜单延时的

this.creat = function(func)
{
var _arrMenu = document.getElementById(this.bind[0]).getElementsByTagName(this.bind[1]);
var _arrInfo = document.getElementById(this.bind[2]).getElementsByTagName(this.bind[3]);
var my = this, i;
var argLen = arguments.length;
var arrM = new Array();

if(this.nesting[0] || this.nesting[1]) // 有选项卡嵌套
{ // 过滤出需要的数据
var arrMenu = this.nesting[0]?getChilds(_arrMenu,this.bind[0],2):_arrMenu;
var arrInfo = this.nesting[1]?getChilds(_arrInfo,this.bind[2],3):_arrInfo;
}
else
{
var arrMenu = _arrMenu;
var arrInfo = _arrInfo;
}

var l = arrMenu.length;
if(l!=arrInfo.length){alert("菜单和内容必须拥有相同的数量\n如果需要，你可以放一个空的在那占位。")}

// 修正
if(this.menu){this.auto=false;this.overChange=true;} //如果是菜单，则没有自动运行，有over, out直接激活

// 循环添加各个事件等
for(i=0;i {
arrMenu[i].cName = arrMenu[i].className;
arrMenu[i].className = (i!=this.index || this.menu)?getClass(arrMenu[i],this.style[0]):getClass(arrMenu[i],this.style[1]); //加载样式，菜单的话统一样式

if(arrMenu[i].getAttribute("skip")) // 需要跳过的容器
{
if(this.overStyle || this.overChange) // 有over, out 改变样式 或者 激活
{
arrMenu[i].onmouseover = function(){changeTitle(this, 2);autoStop(this, 0);}
arrMenu[i].onmouseout = function(){changeTitle(this, 0);autoStop(this, 1);}
}
arrMenu[i].onclick = function(){if(argLen==1){func()}}
arrInfo[i].style.display = "none";
continue;
}

if(i!=this.index || this.menu){arrInfo[i].style.display="none"}; //隐藏初始化，菜单的话全部隐藏
arrMenu[i].index = i; //记录自己激活值[序号]
arrInfo[i].index = i;

if(this.overChange) //有鼠标over, out事件
{
arrMenu[i].onmouseover = function(){changeOption(this);my.menu?changeMenu(1):autoStop(this, 0);}
arrMenu[i].onmouseout = function(){changeOption(this);my.menu?changeMenu(0):autoStop(this, 1);}
}
else //onclick触发
{
arrMenu[i].onclick = function(){changeOption(this);autoStop(this, 0);if(argLen==1){func()}}
if(this.overStyle) // 有over, out 改变样式
{
arrMenu[i].onmouseover = function(){changeTitle(this, 2);autoStop(this, 0);}
arrMenu[i].onmouseout = function(){changeTitle(this, 0);autoStop(this, 1);}
}
else // 没有over, out 改变样式
{
if(this.auto[0]) // 有自动运行
{
arrMenu[i].onmouseover = function(){autoStop(this, 0);}
arrMenu[i].onmouseout = function(){autoStop(this, 1);}
}
}
}

if(this.auto[0] || this.menu) //arrinfo 控制自动播放
{
arrInfo[i].onmouseover = function(){my.menu?changeMenu(1):autoStop(this, 0);}
arrInfo[i].onmouseout = function(){my.menu?changeMenu(0):autoStop(this, 1);}
}
} //for结束

if(this.auto[0])
{
this.timerID = setTimeout(autoMove,this.auto[1])
}

// 自动播放
function autoMove()
{
var n;
n = my.index + 1;
if(n==l){n=0};
while(arrMenu[n].getAttribute("skip")) // 需要跳过的容器
{
n += 1;
if(n==l){n=0};
}
changeOption(arrMenu[n]);
my.timerID = setTimeout(autoMove,my.auto[1]);
}

// onmouseover时，自动播放停止。num：0为over，1为out。 obj暂时无用。 -_-!!
function autoStop(obj, num)
{
if(!my.auto[0]){return;}
//if(obj.index==my.index)
num == 0 ? clearTimeout(my.timerID) : my.timerID = setTimeout(autoMove,my.auto[1]);
}

// 改变选项卡
function changeOption(obj)
{
arrMenu[my.index].className = getClass(arrMenu[my.index],my.style[0]); //修改旧内容
arrInfo[my.index].style.display = "none"; //隐藏旧内容

obj.className = getClass(obj,my.style[1]); //修改为新样式
arrInfo[obj.index].style.display = ""; //显示新内容

my.index = obj.index; //更新当前选择的index
}

/*
只有onclick时，overStyle的onmouseover,onmouseout事件。用来预激活
obj：目标对象。 num：1为over，0为out
*/
function changeTitle(obj, num)
{
if(!my.overStyle){return;};
if(obj.index!=my.index){obj.className = getClass(obj,my.style[num])}
}

/*
菜单类型时用
obj：目标对象。 num：1为over，0为out
*/
function changeMenu(num)
{
if(!my.menu){return;}
num==0?my.menutimerID = setTimeout(menuClose,1000):clearTimeout(my.menutimerID)
}

//关闭菜单
function menuClose()
{
arrInfo[my.index].style.display = "none";
arrMenu[my.index].className = my.style[0];
}

// 得到className（防止将原有样式覆盖）
function getClass(o, s)
{
if(o.cName==""){return s}
else{return o.cName + " " + s}
}

//嵌套情况下得到真正的子集
function getChilds(arrObj, id, num)
{
var depth = 0;
var firstObj = my.nesting[num]==""?arrObj[0]:document.getElementById(my.nesting[num]); //得到第一个子集
do //计算深度
{
if(firstObj.parentNode.getAttribute("id")==id){break}else{depth+=1}
firstObj = firstObj.parentNode;
}
while(firstObj.tagName.toLowerCase()!="body") // body强制退出。

var t;
var arr = new Array();
for(i=0;i {
t = arrObj[i], d = 0;
do
{
if(t.parentNode.getAttribute("id")==id && d == depth)
{
arr.push(arrObj[i]);break; //得到数据
}
else
{
if(d==depth){break};d+=1;
}
t = t.parentNode;
}
while(t.tagName.toLowerCase()!="body") // body强制退出
}
return arr;
}
}
}
window.onload = function()
{
var aa = new opCard();
aa.bind = ["a1","div","b1","div"];
aa.style = ["a1_0","a1_1","a1_0"];
aa.index = 0;
aa.nesting = [false,true,"",""]
aa.creat();
aa =null;

// 默认的onclick中，第一个例子
var bba = new opCard();
bba.bind = ["a2","li","b2","div"];
bba.style = ["style1","style2","style3"];
bba.overStyle = true;
bba.creat();
bba = null;

// 默认的onclick中，第二个例子
var bbb = new opCard();
bbb.bind = ["a3","li","b3","div"];
bbb.style = ["style1","style2","style3"];
bbb.overStyle = true;
bbb.creat();
bbb = null;

// onmousover触发中的例子
var cc = new opCard();
cc.bind = ["a4","li","b4","div"];
cc.style = ["style1","style2","style3"];
cc.overStyle = true;
cc.overChange = true;
cc.creat();
cc = null;

//自动播放auto第一个例子
var dd = new opCard();
dd.bind = ["a5","li","b5","div"];
dd.style = ["style1","style2","style3"];
dd.auto = [true, 3000];
dd.creat();
dd = null;

//自动播放auto第二个例子
var ee = new opCard();
ee.bind = ["a6","li","b6","div"];
ee.style = ["style1","style2","style3"];
ee.auto = [true, 2000];
ee.overChange = true;
ee.creat();
ee = null;

//自动播放auto第三个例子
var ff = new opCard();
ff.bind = ["a7","li","b7","div"];
ff.style = ["style1","style2","style3"];
ff.auto = [true, 1000];
ff.overChange = true;
ff.overStyle = true;
ff.creat();
ff = null;

//菜单导航例子
var gg = new opCard();
gg.bind = ["a8","li","b8","div"];
gg.style = ["style1","style2","style3"];
gg.overStyle = true;
gg.menu = true;
gg.creat();
gg = null;

//其他应用
var hh = new opCard();
hh.bind = ["a9","li","a9","li"];
hh.style = ["style4","style4","style4"];
//hh.overStyle = true;
hh.auto = [true, 1000];
hh.creat();
hh = null;
}