图片轮播实例

broadcast.js

var CarouselFigure = new Object();
//轮播图初始化定义函数
CarouselFigure.init = function(tmpobj){
	//定义动画帧数(默认为:30)
	this.frameNum = tmpobj.frameNum !=undefined ?  tmpobj.frameNum : 30;
	//定义一次轮播的时间(默认为:0.2s)
	this.comsumeTime = tmpobj.comsumeTime !=undefined ?  tmpobj.comsumeTime : 200;
	//定义轮播图的宽高(默认宽高为:700px * 250px)
	this.CFWidth = tmpobj.CFWidth !=undefined ?  tmpobj.CFWidth : 700;
	this.CFHeight = tmpobj.CFHeight !=undefined ?  tmpobj.CFHeight : 250;
	//定义轮播的风格
	this.type = tmpobj.type == "small" ? 'small' : 'big';
	//轮播图的按钮大小的宽高
	this.AssowWidth = tmpobj.AssowWidth !=undefined ?  tmpobj.AssowWidth : 76;
	this.AssowHeight = tmpobj.AssowHeight !=undefined ?  tmpobj.AssowHeight : 112;
	//判断用户是否初始化
	this.initFlag = true;
	//是否允许轮播图运行
	this.applicationflag = true;
}
CarouselFigure.start = function(){
/**
	第一部分类容:初始化整个轮播图和其运行数据
*/
(function(){
	//1. 判断用户是否进行初始化
	if(CarouselFigure.initFlag == undefined){
		CarouselFigure.init({});
	}
	
	//2.1 初始化整个轮播图的div的基本大小
	$("#CarouselFigure").width(CarouselFigure.CFWidth).height(CarouselFigure.CFHeight).css("position","relative");
	
	//2.2 最中央的大图实际大小为:
	CarouselFigure.ImgWidth = CarouselFigure.CFWidth * 2/3;
	CarouselFigure.ImgHeight =  CarouselFigure.CFHeight - 6;
	
	//3. 初始化轮播图按钮数据
	CarouselFigure.setAssowdata = {
	prev:{
		  top:(CarouselFigure.CFHeight - CarouselFigure.AssowHeight)/2 +"px",
		  left:CarouselFigure.CFWidth/6 - CarouselFigure.AssowWidth + 6 + "px",
		  originUrl:$("#CarouselFigure > img:eq(0)").attr("src"),
		  hoverUrl:$("#CarouselFigure > img:eq(1)").attr("src"),
		  },
	next:{
		  top:(CarouselFigure.CFHeight - CarouselFigure.AssowHeight)/2 +"px",
		  left:CarouselFigure.CFWidth*5/6 + "px",
		  originUrl:$("#CarouselFigure > img:eq(2)").attr("src"),
		  hoverUrl:$("#CarouselFigure > img:eq(3)").attr("src"),
		  }
	};
	
	//4.1 初始化轮播图的url和src信息,存放到一个容器中
	CarouselFigure.imageContains = [];						
	$("#CarouselFigure ul li img").each(function(){
		var tmpobj = {src:$(this).attr("src"),href:$(this).attr("href")}
		CarouselFigure.imageContains.push(tmpobj);
	});
	//4.2 对轮播图容器数据进行处理,当轮播图的个数3<= x  <= 5 只能使用small风格类型。当轮播图的个数 x < 3 时, 停止运行
	if(CarouselFigure.imageContains.length < 3){
		CarouselFigure.applicationflag = false;
	}else if(CarouselFigure.imageContains.length < 6){
		CarouselFigure.type = 'small';
	}
	//4.3 对轮播容器数据按顺序进行增倍,保证有足够数据进行轮播
	var objstr = JSON.stringify(CarouselFigure.imageContains);
	CarouselFigure.imageContains = CarouselFigure.imageContains.concat(JSON.parse(objstr));
	//5.1 轮播图使用big风格时,页面七张图在静态页面中的属性值
	CarouselFigure.setViewPosData = new Object;
 	CarouselFigure.setViewPosData.big = [
		{
			width:CarouselFigure.ImgWidth*3/8,		height:CarouselFigure.ImgHeight*3/8,
			left:0,									top:0,
			zIndex:1,			opacity:0.2,		borderSize:0
		},{
			width:CarouselFigure.ImgWidth*3/8,		height:CarouselFigure.ImgHeight*3/8,
			left:0,									top:CarouselFigure.CFHeight*5/16,
			zIndex:2,			opacity:0.7,		borderSize:0
		},{
			width:CarouselFigure.ImgWidth*3/4,		height:CarouselFigure.ImgHeight*3/4,
			left:CarouselFigure.CFWidth/18,			top:CarouselFigure.CFHeight/8,
			zIndex:3,			opacity:0.9,		borderSize:0
		},{
			width:CarouselFigure.ImgWidth,			height:CarouselFigure.ImgHeight,
			left:CarouselFigure.CFWidth/6,			top:0,
			zIndex:4,			opacity:1,			borderSize:3
		},{
			width:CarouselFigure.ImgWidth*3/4,		height:CarouselFigure.ImgHeight*3/4,
			left:CarouselFigure.CFWidth * 4/9,		top:CarouselFigure.CFHeight/8,
			zIndex:3,			opacity:0.9,		borderSize:0
		},{
			width:CarouselFigure.ImgWidth*3/8,		height:CarouselFigure.ImgHeight*3/8,
			left:CarouselFigure.CFWidth * 3/4,		top:CarouselFigure.CFHeight*5/16,
			zIndex:2,			opacity:0.7,		borderSize:0
		},{
			width:CarouselFigure.ImgWidth*3/8,		height:CarouselFigure.ImgHeight*3/8,
			left:CarouselFigure.CFWidth * 3/4,		top:0,
			zIndex:1,			opacity:0.2,		borderSize:0
		},];
	//5.2 轮播图使用small风格时,页面5张图在静态页面中的属性值
 	CarouselFigure.setViewPosData.small = [
		{
			width:CarouselFigure.ImgWidth*3/8,		height:CarouselFigure.ImgHeight*3/8,
			left:0,									top:0,
			zIndex:1,			opacity:0.2,		borderSize:0
		},{
			width:CarouselFigure.ImgWidth*3/4,		height:CarouselFigure.ImgHeight*3/4,
			left:0,									top:CarouselFigure.CFHeight/8,
			zIndex:2,			opacity:0.9,		borderSize:0
		},{
			width:CarouselFigure.ImgWidth,			height:CarouselFigure.ImgHeight,
			left:CarouselFigure.CFWidth/6,			top:0,
			zIndex:3,			opacity:1,			borderSize:3
		},{
			width:CarouselFigure.ImgWidth*3/4,		height:CarouselFigure.ImgHeight*3/4,
			left:CarouselFigure.CFWidth * 1/2,		top:CarouselFigure.CFHeight/8,
			zIndex:2,			opacity:0.9,		borderSize:0
		},{
			width:CarouselFigure.ImgWidth*3/8,		height:CarouselFigure.ImgHeight*3/8,
			left:CarouselFigure.CFWidth * 3/4,		top:0,
			zIndex:1,			opacity:0.2,		borderSize:0
		}];
}());
//验证初始化是否成功,否则全部隐藏,结束进程
if(!CarouselFigure.applicationflag){
	$("#CarouselFigure").css("display","none");
	return false;
}
/**
	第二部分:
		对轮播图的箭头进行初始化(包括页面中的静态布局,和点击事件和悬浮事件)
*/
	CarouselFigure.InitAssow = function (Assow,direction){
		//实现轮播图箭头的静态样式、悬浮事件和点击事件
		Assow.css({
			position:"absolute",
			left:this.setAssowdata[direction].left,
			top:this.setAssowdata[direction].top,
			"z-index":4
		})
		.mouseover(function(){			//鼠标悬浮切换图片
			$(this).attr("src",CarouselFigure.setAssowdata[direction].hoverUrl);
		}).mouseout(function(){
			$(this).attr("src",CarouselFigure.setAssowdata[direction].originUrl);
		}).click(function(){
			//记录点击事件的次数
			CarouselFigure.clickArrowfun(direction);	
		});
	}
	//调用初始化轮播图函数--实现左右箭头全部功能
	$("#CarouselFigure > img:odd").css("display","none");
	CarouselFigure.InitAssow($("#CarouselFigure > img:eq(0)"),"prev");
	CarouselFigure.InitAssow($("#CarouselFigure > img:eq(2)"),"next");
/**
	第三部分:
		对所有的轮播图进行页面静态布局
*/
	//初始化某张轮播图的方法
	CarouselFigure.InitImages =	function (i,setViewPosData,imageContains){
		$("#CarouselFigure ul img:eq("+i+")").css({
			position:"absolute",
			width:setViewPosData[i].width + "px",
			height:setViewPosData[i].height + "px",
			top:setViewPosData[i].top + "px",
			left:setViewPosData[i].left + "px",
			display:"block",
			"z-index":setViewPosData[i].zIndex,
			opacity:setViewPosData[i].opacity,	
		}).attr({
			src:imageContains[i].src,
			href:imageContains[i].href
		}).click(function(){
			location.href = $(this).attr("href");	//绑定图片点击跳转事件
		});
		if( (i == 0 || i == 6) && this.type == 'big'){		//第1张图片和第7张图片不可见
			$("#CarouselFigure ul img:eq("+i+")").css("display","none");
		}else if(i == 3 && this.type == 'big'){				//为正中央图片加边框
			$("#CarouselFigure ul img:eq("+i+")").css("border","3px solid #fff");
		}else if( (i == 0 || i == 4)&&this.type == 'small'){//第1张图片和第5张图片不可见
			$("#CarouselFigure ul img:eq("+i+")").css("display","none");
		}else if(i == 2 && this.type == 'small'){			//为正中央图片加边框
			$("#CarouselFigure ul img:eq("+i+")").css("border","3px solid #fff");
		}
	}
	/**
		实现七张图片的静态样式:
			清空原有的li标签,然后新建
  • 来存放每张轮播图。 */ $("#CarouselFigure ul").empty(); for(var i = 0; i < CarouselFigure.setViewPosData[CarouselFigure.type].length; i++){ $("#CarouselFigure ul").append('
  • '); CarouselFigure.InitImages(i,CarouselFigure.setViewPosData[CarouselFigure.type],CarouselFigure.imageContains); } /** 第四部分: 形成轮播动画效果 */ /* 设置clickArrow变量:作为动画的标示位,让其进行队列化,必须本次动画完成,才能进行下次动画轮播。 1. 当为负数时向前轮播,比如:-5向前轮播五次动画; 2. 当为正数时向后轮播,同理; 3. 当等于0时,此时没有进行轮播。 */ CarouselFigure.clickArrow = 0 ; // 处理动画队列方法: CarouselFigure.clickArrowfun = function (direction){ if(this.clickArrow == 0){ this.startAnimation(direction); } if(direction == "prev"){ this.clickArrow--; }else if(direction == "next"){ this.clickArrow++; } } /** 开始一次轮播动画 其中composerAnimateNum变量为: 在一次动画中,记录每张轮播图完成的标识符; 在big风格类型中:当其值为6时说明此次动画全部完成 在small风格类型中:当其值为4时说明此次动画全部完成 */ CarouselFigure.startAnimation = function(direction){ this.completeAnimationNum = 0; if(direction == "prev"){ //从最后一张图片到第一张轮播图片,分别向前移动,首先让最后一张图片可视 if(this.type == "big"){ $("#CarouselFigure ul img:eq(6)").css("display","block"); }else{ $("#CarouselFigure ul img:eq(4)").css("display","block"); } for(var i = this.setViewPosData[this.type].length - 1 ; i > 0; i --){ this.startMove(i, this.setViewPosData[this.type][i],this.setViewPosData[this.type][i-1],direction); } }else if(direction == "next"){//从第一张图片到倒数第二张图片,分别向后移动,首先让第一张轮播图片可视 $("#CarouselFigure ul img:eq(0)").css("display","block"); for(var i = 0 ; i < this.setViewPosData[this.type].length - 1; i ++){ this.startMove(i, this.setViewPosData[this.type][i],this.setViewPosData[this.type][i+1],direction); } } } /** 功能:让一张轮播图从某一个状态变换到另一个状态 (包括位子、透明度、边框等等属性) */ CarouselFigure.startMove = function (index,startObj,endObj,direction){ //所有属性的增量 var increaseLeft = endObj.left - startObj.left; var increaseTop = endObj.top - startObj.top; var increaseWidth = endObj.width - startObj.width; var increaseHeight = endObj.height - startObj.height; var increaseOpacity = endObj.opacity - startObj.opacity; var increaseBorderSize = endObj.borderSize - startObj.borderSize; var time = this.frameNum; //共总帧数 var i = 1; //帧数的记步标志索引 //定义函数:一帧到下一帧的变化过程 function moveStep(){ setTimeout(function(){ var tmpObj = $("#CarouselFigure ul img:eq("+index+")"); //每一帧时图片的属性改变量 tmpObj.css({ width:startObj.width + (increaseWidth/time) * i + "px", height:startObj.height + (increaseHeight/time) * i + "px", top:startObj.top + (increaseTop/time) * i + "px", left:startObj.left + (increaseLeft/time) * i + "px", border:startObj.borderSize + (increaseBorderSize/time) * i + "px solid #fff", opacity:startObj.opacity + (increaseOpacity/time) * i, }); //当小于30帧时,继续递归,直至调用30次完成动画效果 if( i++ 0){ this.startAnimation(direction); }else if(this.clickArrow < 0){ this.startAnimation(direction); } } } };

    broadcast.html

    
    
    	
    		
    		轮播图实例
    	
    	
    	
    	
    		

    实现效果

    图片轮播实例_第1张图片

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