jqery实现的图片轮播

jquery轮播控件http://www.jsfoot.com/jquery/demo/2011-09-20/192.html
下载地址http://download.csdn.net/detail/slwsss/8137721

你的代码好多脱离了实例。。改成这样function CenterImgPlay() {
        this.list = $(".imgbox").children(":first").children();
        this.indexs = [];
        this.length = this.list.length;
        //图片显示时间
        this.timer = 3000;
        this.showTitle = $(".title");        var index = 0, self = this, pre = 0, handid, isPlay = false, isPagerClick = false;        this.Start = function () {
            this.Init();
            //计时器，用于定时轮播图片
            handid = setInterval(function(){self.Play()}, this.timer);//////////////////////////////////        };
        //初始化
        this.Init = function () {
//////////////////////////////////
            $(".imgbox").mouseenter(function () { clearInterval(handid); }).mouseleave(function () { handid = setInterval(function () { self.Play() }, self.timer); });            var o = $(".pager ul li");            for (var i = o.length - 1, n = 0; i >= 0; i--, n++) {
                this.indexs[n] = o.eq(i).click(self.PagerClick);
            }
        };
        this.Play = function () {
            isPlay = true;
            index++;
            if (index == self.length) {//说明已经播放到了最后一个，从第一个重新开始播放
                index = 0;
            }            console.log("Play+++index=" + index);
            console.log("Play+++pre=" + pre);
            //先淡出，在回调函数中执行下一张淡入
            self.list.eq(pre).fadeOut(300, function () { self.imageIn() }); //end of fadeout
        };
        this.imageIn = function () {
            var info = self.list.eq(index).fadeIn(500, function () {
                isPlay = false;
                //////////////////////////////////if (isPagerClick) { handid = setInterval(self.Play, self.timer); isPagerClick = false; }
            }).attr("title");            //显示标题
            self.showTitle.text(info);
            //图片序号背景更换
            self.indexs[index].css("background-color", "#FF70Ad");
            self.indexs[pre].css("background-color", "#6f4f67");
            pre = index;
            console.log("imageIn+++pre=" + pre);        }
        //图片序号点击
        this.PagerClick = function () {
            if (isPlay) { return; }
            isPagerClick = true;            clearInterval(handid);            var oPager = $(this), i = parseInt(oPager.text()) - 1;            if (i != pre) {
                index = i - 1;
            }
            self.Play();
        };
    };

<!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>s</title>
    <style type="text/css">
        ul,li{margin: 0;padding: 0;list-style: none}
        #out_div{position:relative;border: 1px solid #ccc;width: 400px;height: 200px;margin: 200px auto}
        .banner{height:200px;position: relative;overflow: hidden}
        .banner li{position: absolute;width: 100%;left: 0;background-repeat: repeat-x;background-position: center}
        .banner img{width:400px;height: 200px;z-index:1;}
        .banner_li{position: absolute;left:50%;margin-top: -20px;}
        .banner_li li{font-size:0;float: left;width:12px;height:12px;margin-left:7px;cursor: pointer;border-radius: 50%;background-color:#ddd;cursor: pointer}
        .banner_li .on_li{background-color:#f30}
    </style>
</head>
<body>
<div id="out_div">
    <ul class="banner">
        <li><a href="javascript:void(0)"><img src="http://down.scscms.com/scs/pic/1.jpg" alt=""/></a></li>
        <li><a href="javascript:void(0)"><img src="http://down.scscms.com/scs/pic/2.jpg" alt=""/></a></li>
        <li><a href="javascript:void(0)"><img src="http://down.scscms.com/scs/pic/3.jpg" alt=""/></a></li>
        <li><a href="javascript:void(0)"><img src="http://down.scscms.com/scs/pic/4.jpg" alt=""/></a></li>
    </ul>
</div>
<script type="text/javascript" src="http://down.scscms.com/scs/pic/jquery-1.6.4.min.js"></script>
<script type="text/javascript">
    $(function(){
        function animate(){
            i ++;old = li.filter(":visible");
            if(i != old.index()){
                i >= l && (i = 0);
                $(".banner_li li").removeAttr("class").eq(i).addClass("on_li");
                li.eq(i).css({zIndex:1,display:"block",opacity:0}).animate({opacity:1},1000,function(){$(this).css({zIndex:0});old.hide()})
            }
        }
        var li = $(".banner li"),l = li.size(),i = 0,arr = new Array(l);
        $(".banner").after('<ul class="banner_li" style="z-index:2;margin-left: -'+Math.floor(l/2*13)+'px"><li class="on_li">'+arr.join("</li><li>")+'</li></ul>');
        var old = li.first().show(),fun = setInterval(animate,6000);
        $(".banner_li").delegate("li","click",function(){i = $(this).index()-1;animate()}).hover(function(){clearInterval(fun)},function(){fun = setInterval(animate,6000)});
    })
</script>
</body>
</html>

请问我的代码，具体错在了什么地方呢，好纠结？难道setInterval(self.Play , this.timer)，这样的写法不对吗？

  $(".imgbox").hover(
                    function(){ console.log("hover clearInterval+++index="+index+"  pre="+pre);clearInterval(handid);},
                    function(){ console.log("hover setInterval+++index="+index+"  pre="+pre);setInterval(self.Play , this.timer);});红色的this指向.imgbox这个对象，已经不是你的实例对象，导致为0就会一直变换，而且你也没有记录setInterval这个计时器。。导致无法清除计时器setInterval(self.Play , this.timer)你这样写会导致Play执行后this对象指向window，不在是示例，不过你的play用的是self对象，这样写也是可以的，但是不能再play里面用this对象，this==window，所以用写成我那种形式

<!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=gb2312" />
<title>jQuery焦点幻灯片特效在线演示 DIVCSS5</title><style type="text/css">
* {margin:0; padding:0;}
body {font-size:12px; color:#222; font-family:Verdana,Arial,Helvetica,sans-serif; background:#f0f0f0;}
.clearfix:after {content: "."; display: block; height: 0; clear: both; visibility: hidden;}
.clearfix {zoom:1;}
ul,li {list-style:none;}
img {border:0;}
h1 {height:50px; line-height:50px; font-size:22px; font-weight:normal; font-family:"Microsoft YaHei",SimHei;}
/* focus */
#focus {width:100%; height:280px; overflow:hidden; position:relative;}
#focus ul {height:380px; position:absolute;}
#focus ul li {float:left; width:100%; height:280px; overflow:hidden; position:relative; background:#000;}
#focus ul li div {position:absolute; overflow:hidden;}
#focus .btnBg {position:absolute; width:100%; height:20px; left:0; bottom:0; background:#000;}
#focus .btn {position:absolute; width:700px; height:10px; padding:5px 10px; right:0; bottom:0; text-align:right;}
#focus .btn span {display:inline-block; _display:inline; _zoom:1; width:25px; height:10px; _font-size:0; margin-left:5px; cursor:pointer; background:#fff;}
#focus .btn span.on {background:#fff;}
#focus .preNext {width:45px; height:100px; position:absolute; top:90px; background:url(img/sprite.png) no-repeat 0 0; cursor:pointer;}
#focus .pre {left:0;}
#focus .next {right:0; background-position:right top;}#n{margin:10px auto; width:920px; border:1px solid #CCC;font-size:12px; line-height:30px;}
#n a{ padding:0 4px; color:#333}
</style><script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript">
$(function() {
var sWidth = $("#focus").width(); //获取焦点图的宽度（显示面积）
var len = $("#focus ul li").length; //获取焦点图个数
var index = 0;
var picTimer;

//以下代码添加数字按钮和按钮后的半透明条，还有上一页、下一页两个按钮
var btn = "<div class='btnBg'></div><div class='btn'>";
for(var i=0; i < len; i++) {
btn += "<span></span>";
}
btn += "</div><div class='preNext pre'></div><div class='preNext next'></div>";
$("#focus").append(btn);
$("#focus .btnBg").css("opacity",0.5); //为小按钮添加鼠标滑入事件，以显示相应的内容
$("#focus .btn span").css("opacity",0.4).mouseenter(function() {
index = $("#focus .btn span").index(this);
showPics(index);
}).eq(0).trigger("mouseenter"); //上一页、下一页按钮透明度处理
$("#focus .preNext").css("opacity",0.2).hover(function() {
$(this).stop(true,false).animate({"opacity":"0.5"},300);
},function() {
$(this).stop(true,false).animate({"opacity":"0.2"},300);
}); //上一页按钮
$("#focus .pre").click(function() {
index -= 1;
if(index == -1) {index = len - 1;}
showPics(index);
}); //下一页按钮
$("#focus .next").click(function() {
index += 1;
if(index == len) {index = 0;}
showPics(index);
}); //本例为左右滚动，即所有li元素都是在同一排向左浮动，所以这里需要计算出外围ul元素的宽度
$("#focus ul").css("width",sWidth * (len));

//鼠标滑上焦点图时停止自动播放，滑出时开始自动播放
$("#focus").hover(function() {
clearInterval(picTimer);
},function() {
picTimer = setInterval(function() {
showPics(index);
index++;
if(index == len) {index = 0;}
},4000); //此4000代表自动播放的间隔，单位：毫秒
}).trigger("mouseleave");

//显示图片函数，根据接收的index值显示相应的内容
function showPics(index) { //普通切换
var nowLeft = -index*sWidth; //根据index值计算ul元素的left值
$("#focus ul").stop(true,false).animate({"left":nowLeft},300); //通过animate()调整ul元素滚动到计算出的position
//$("#focus .btn span").removeClass("on").eq(index).addClass("on"); //为当前的按钮切换到选中的效果
$("#focus .btn span").stop(true,false).animate({"opacity":"0.4"},300).eq(index).stop(true,false).animate({"opacity":"1"},300); //为当前的按钮切换到选中的效果
}
});</script>
</head><body>
<p id="n"><a href="http://www.divcss5.com/">CSS</a>
<a href="http://www.divcss5.com/">divcss5</a>：
<a href="http://www.divcss5.com/html/">Html基础</a>
<a href="http://www.divcss5.com/htmlrumen/">html入门</a>
<a href="http://www.divcss5.com/rumen/">CSS基础</a>
<a href="http://www.divcss5.com/cssrumen/">CSS入门</a>
<a href="http://www.divcss5.com/css-hack/">CSS Hack</a>
<a href="http://www.divcss5.com/css-texiao/">CSS特效</a>
<a href="http://www.divcss5.com/template/">CSS模块</a>
<a href="http://www.divcss5.com/wenji/">CSS知答</a>
<a href="http://www.divcss5.com/peixun/">CSS培训</a>
<a href="http://www.css5.com.cn/">CSS切图</a>
<a href="http://www.divcss5.com/css-tool/">CSS工具</a>
<a href="http://www.divcss5.com/jiqiao/">CSS技巧</a>
<a href="http://www.divcss5.com/">DIV+CSS</a></p>
<p> </p>
<div class="wrapper">
<h1>jQuery+DIV+CSS焦点幻灯片特效效果如下：</h1> <div id="focus">
<ul>
<li><a href="http://www.divcss5.com/" target="_blank"><img src="img/01.jpg" alt="CSS" /></a></li>
<li><a href="http://www.divcss5.com/" target="_blank"><img src="img/02.jpg" alt="DIV CSS" /></a></li>
<li><a href="http://www.divcss5.com/" target="_blank"><img src="img/03.jpg" alt="DIV+CSS" /></a></li>
<li><a href="http://www.divcss5.com/html/" target="_blank"><img src="img/04.jpg" alt="HTML" /></a></li>
<li><a href="#" target="_blank"><img src="img/05.jpg" alt="jquery商城焦点图展示" /></a></li>
</ul>
</div>
</div>
<p> </p>
<p>返回下载 <a href="http://www.divcss5.com/css-texiao/texiao637.shtml">JQ+CSS幻灯片特效</a>：<a href="http://www.divcss5.com/css-texiao/texiao637.shtml">http://www.divcss5.com/css-texiao/texiao637.shtml</a></p>
</body>
</html>
以上的代码，是一个全屏可以滚动播放的代码，但是只能播放第一张，不知道是为什么，着急死了，不知道是哪里出错了，请帮我看一下，具体错误就是以为内foucs的div的width为100%，如果不为100%，就可以正常。

调试易

jqery实现的图片轮播

解决方案 »