jquery插件图片浏览

jquery插件图片浏览

jquery代码部分

    (function($){
        $.fn.mPicsList = function(options){
            var picsImgs = $(this).find("img");   //获取图片
            var picsImgsLen = picsImgs.length;    //图片总个数
            var index = 0;                        //当前图片索引下标
            var ltBtn = $(".leftbtn");            //左按钮
            var rtBtn = $(".rightbtn");           //右按钮
            var pageNum = $(".allpics");          //图片总个数的标签
            var curPage = $(".curpic");           //当前图片位置的标签
            var isAdd = true;                     //判断是加还是减(向右加,向左减)
            var stop = "";                        //是否运动还是停止
                    
            var defaults = {   
                isAuto: 1,                        //设置是否自动播放
                runTime: 5000,                    //设置每张图片停留的时间
                fadeInTime: 800                   //设置淡入的过度时间
            };
                    
            var opts = $.extend(defaults, options, {});

            this.each(function(){    //初始化
                pageNum.html(picsImgsLen);         //将标签中显示图片总个数
                        
                if(!!defaults.isAuto){             //设置是否自动播放
                    autoPlay();
                    $(this).hover(function(){
                        clearInterval(stop);
                    },function(){
                        autoPlay();
                    });
                }
                
                /*
                 * autoPlay函,自动播放
                 */  
          //有点小问题:当图片第一次加载没完成的时候,这时图片没有显示,会自动执行到下一张图片 function autoPlay(){ isAdd = true; stop = setInterval(function(){ index=addNum(isAdd,index); running(index); loadImage(picsImgs.eq(index).attr("msrc"),index); },defaults.runTime); } ltBtn.click(function(){ isAdd = false; index=addNum(isAdd,index); running(index); loadImage(picsImgs.eq(index).attr("msrc"),index); }); rtBtn.click(function(){ isAdd = true; index=addNum(isAdd,index); running(index); loadImage(picsImgs.eq(index).attr("msrc"),index); }); }); /* * addNum函数,计算索引位置 * isAdd布尔类型,判断加还是减 * num整形 * 返回整形,即当前索引位置 */ function addNum(isAdd,num){ if(isAdd){ num++; if(num>parseInt(picsImgsLen-1)){ num = 0; } } else{ num--; if(num<0){ num = picsImgsLen-1; } } return num; } /* * running方法,执行动作 * num指当前索引位置 */ function running(num){ curPage.html(parseInt(num+1)); picsImgs.hide().removeClass("on").eq(num).addClass("on").fadeIn(defaults.fadeInTime); } /* * loadRun方法,第一次图片加载时候执行 * num指当前索引位置 */ function loadRun(num){ if(typeof(picsImgs.eq(num).attr("msrc"))!=="undefined"){ var tmp = picsImgs.eq(num).attr("msrc"); picsImgs.eq(num).addClass("on").attr("src",tmp).removeAttr("msrc"); } } /* * loadImage方法判断图片是否加载完成 * url图片的地址 * num指当前索引位置 */ function loadImage(url,num){ var o= new Image(); o.src = url; if(o.complete){ loadRun(num); }else{ o.onload = function(){ loadRun(num); }; o.onerror = function(){ }; } } } })(jQuery);

 

html结构部分

<div id="page">
            <div id="mpics">
                <img class="on" alt="" src="./images/120923/mi001.jpg" /> 
                <img alt="" src="./images/transparent.png" msrc="./images/120923/mi002.jpg" />
                <img alt="" src="./images/transparent.png" msrc="./images/120923/mi003.jpg" />
                <img alt="" src="./images/transparent.png" msrc="./images/120923/mi004.jpg" />
                <img alt="" src="./images/transparent.png" msrc="./images/120923/mi005.jpg" />
                <img alt="" src="./images/transparent.png" msrc="./images/120923/mi006.jpg" />
                <img alt="" src="./images/transparent.png" msrc="./images/120923/mi007.jpg" />
                <img alt="" src="./images/transparent.png" msrc="./images/120923/mi008.jpg" />
                <img alt="" src="./images/transparent.png" msrc="./images/120923/mi009.jpg" />
                <img alt="" src="./images/transparent.png" msrc="./images/120923/mi010.jpg" />
                <img alt="" src="./images/transparent.png" msrc="./images/120923/mi011.jpg" />
                <img alt="" src="./images/transparent.png" msrc="./images/120923/mi012.jpg" />
                <img alt="" src="./images/transparent.png" msrc="./images/120923/mi013.jpg" />
                <img alt="" src="./images/transparent.png" msrc="./images/120923/mi014.jpg" />
                <img alt="" src="./images/transparent.png" msrc="./images/120923/mi015.jpg" />
                <img alt="" src="./images/transparent.png" msrc="./images/120923/mi016.jpg" />
                <a class="leftbtn"></a>
                <a class="rightbtn"></a>
            </div>
            <div class="downpics">
                <span class="curpic">1</span>/<span class="allpics">16</span>
            </div>
        </div>
posted @ 2012-09-23 23:22  前端咖  阅读(5914)  评论(0编辑  收藏  举报