用JS做图片轮播

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js 图片轮播(5张图片)
作者:mdxy-dxy
网上比较常见的用jquery实现的图片轮播效果代码。
演示地址:http://img.jb51.net/online/picPlayer/picplay.htm

<!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>pic player</title> 
        <script type="text/javascript" src="http://img.jb51.net/jslib/jquery/jquery-1.2.6.js"></script> 
        <script type="text/javascript" src="http://img.jb51.net/jslib/jquery/tween.js"></script> 
    </head> 
    <style type="text/css"> 
    img{border:0;} 
    </style> 
    <body> 
        <div id="picplayer" style="position:relative;overflow:hidden;300px;height:300px;clear:none;border:solid 1px #ccc;"> 
            there is a pic-player 
        </div> 
        <script> 
            var p = $('#picplayer'); 
            var pics1 = [{url:'http://img.jb51.net/online/picPlayer/1.jpg',link:'http://www.jb51.net/#',time:5000},{url:'http://img.jb51.net/online/picPlayer/2.jpg',link:'http://www.jb51.net/#',time:4000},{url:'http://img.jb51.net/online/picPlayer/3.jpg',link:'http://www.jb51.net',time:6000},{url:'http://img.jb51.net/online/picPlayer/2.jpg',link:'http://www.jb51.net',time:6000},{url:'http://img.jb51.net/online/picPlayer/1.jpg',link:'http://www.jb51.net',time:6000}];
            initPicPlayer(pics1,p.css('width').split('px')[0],p.css('height').split('px')[0]); 
            // 
            // 
            function initPicPlayer(pics,w,h) 
            { 
                //选中的图片 
                var selectedItem; 
                //选中的按钮 
                var selectedBtn; 
                //自动播放的id 
                var playID; 
                //选中图片的索引 
                var selectedIndex; 
                //容器 
                var p = $('#picplayer'); 
                p.text(''); 
                p.append('<div id="piccontent"></div>'); 
                var c = $('#piccontent'); 
                for(var i=0;i<pics.length;i++) 
                { 
                    //添加图片到容器中 
                    c.append('<a href="'+pics[i].link+'" target="_blank"><img id="picitem'+i+'" style="display: none;z-index:'+i+'" src="'+pics[i].url+'" /></a>'); 
                } 
                //按钮容器,绝对定位在右下角 
                p.append('<div id="picbtnHolder" style="position:absolute;top:'+(h-25)+'px;'+w+'px;height:20px;z-index:10000;"></div>'); 
                // 
                var btnHolder = $('#picbtnHolder'); 
                btnHolder.append('<div id="picbtns" style="float:right; padding-right:1px;"></div>'); 
                var btns = $('#picbtns'); 
                // 
                for(var i=0;i<pics.length;i++) 
                { 
                    //增加图片对应的按钮 
                    btns.append('<span id="picbtn'+i+'" style="cursor:pointer; border:solid 1px #ccc;background-color:#eee; display:inline-block;">&nbsp;'+(i+1)+'&nbsp;</span>&nbsp;'); 
                    $('#picbtn'+i).data('index',i); 
                    $('#picbtn'+i).click( 
                        function(event) 
                        { 
                            if(selectedItem.attr('src') == $('#picitem'+$(this).data('index')).attr('src')) 
                            { 
                                return; 
                            } 
                            setSelectedItem($(this).data('index')); 
                        } 
                    ); 
                } 
                btns.append('&nbsp;'); 
                /// 
                setSelectedItem(0); 
                //显示指定的图片index 
                function setSelectedItem(index) 
                { 
                    selectedIndex = index; 
                    clearInterval(playID); 
                    //alert(index); 
                    if(selectedItem)selectedItem.fadeOut('fast'); 
                    selectedItem = $('#picitem'+index); 
                    selectedItem.fadeIn('slow'); 
                    // 
                    if(selectedBtn) 
                    { 
                        selectedBtn.css('backgroundColor','#eee'); 
                        selectedBtn.css('color','#000'); 
                    } 
                    selectedBtn = $('#picbtn'+index); 
                    selectedBtn.css('backgroundColor','#000'); 
                    selectedBtn.css('color','#fff'); 
                    //自动播放 
                    playID = setInterval(function() 
                    { 
                        var index = selectedIndex+1; 
                        if(index > pics.length-1)index=0; 
                        setSelectedItem(index); 
                    },pics[index].time); 
                } 
            } 
             
             
         
        </script> 
         
         
    </body> 
</html>

如果想增加图片可以通过增加 var pics1 后面的内容。即可。
原文地址:https://www.cnblogs.com/SJP666/p/4697071.html