幻灯片（响应式设计）（jquery实现）

时间：2024-09-18 13:04:02

Html代码：

<!DOCTYPE html>

<html lang="en">

<head>

	<meta charset="UTF-8">

	<title>detail</title>

	<meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0, user-scalable=0">

	<link rel="stylesheet" href="/Style/detail.css">

	<script type="text/javascript" src="/Javascript/jquery.js"></script>

	<script type="text/javascript" src="/Javascript/detail.js"></script>

	<script type="text/javascript">

		$(document).ready(function(){

	  		$.focus(".slider");

		});

	</script>

</head>

<body>

	<div class="main">

		     <div class="slider">

                <ul>

                    <li><a href="javascript:void(0);" type='0'>

                        <img src="http://img.17u.cn/ly/cn/img/zizhuyou/rimage/500_270/2014/9/11/201409110148547940.jpg" ></a></li>

                    <li><a href="javascript:void(0);" type='0'>

                        <img src="http://img.17u.cn/ly/cn/img/zizhuyou/rimage/500_270/2014/10/14/201410140439098138.jpg"></a></li>

                    <li><a href="javascript:void(0);" type='0'>

                        <img src="http://img.17u.cn/ly/cn/img/zizhuyou/rimage/500_270/2014/1/21/201401211150391745.jpg"></a></li>

                </ul>

            </div>

	</div>

</body>

</html>

css代码：

*{margin: 0;padding: 0;}

ul{ list-style:none;}

body {

    -webkit-tap-highlight-color: transparent;

    -webkit-font-smoothing: antialiased;

    -webkit-user-select: none;

    -moz-user-select: none;

    font-size: 14px;

	line-height: 1.5;

	color: #333;

	font-family: arial,sans-serif;

	margin: 0 auto;

	max-width: 640px;

}

.main {

    background: #f0f0f0;

    width: 100%;

}

/* 以下特效CSS */

.slider {width:100%;  margin:0 auto; overflow:hidden; position:relative;}

.slider ul { position:relative;width: 100%;}

.slider li:first-child {position: static;}

.slider ul li {  overflow:hidden; position:absolute; background:#000; top:0px; width: 100%; }

.slider ul li img {border:0;width: 100%;display: block;}

.slider ul li div {position:absolute; overflow:hidden;}

.slider .btnBg {position:absolute; width:100%; height:20px; left:0; bottom:0; background:#000; display:none;}

.slider .btn {position:absolute; width:95%; height:23px; padding:0px 10px 0px 10px; right:0; bottom:6px; text-align:right;}

.slider .btn span {display:inline-block; _display:inline; _zoom:1; width:25px; height:24px; line-height:24px; text-align:center; _font-size:0; margin-left:5px; cursor:pointer; background:#fff;}

.slider .btn span.on {background:#fff;}

　　javascript代码：

$(function() {

	jQuery.focus = function(slid) {

		var sWidth = $(slid).width(); //获取焦点图的宽度（显示面积）

		var len = $(slid).find("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++) {

			var ii = i+1;

			btn += "<span>"+ii+"</span>";

		}

		//btn += "</div><div class='preNext pre'></div><div class='preNext next'></div>";

		$(slid).append(btn);

		$(slid).find("div.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

		$(slid+" div.btn span").css("opacity",0.4).mouseenter(function() {

			index = $(slid+" .btn span").index(this);

			showPics(index);

		}).eq(0).trigger("mouseenter");

		//上一页、下一页按钮透明度处理

		$(slid+" .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

		/*$(slid+" .pre").click(function() {

			index -= 1;

			if(index == -1) {index = len - 1;}

			showPics(index);

		});

		//下一页按钮

		$(slid+" .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

		//$(slid+" ul").css("width",sWidth * (len));

		//$(slid+" ul li").css("width",sWidth);

		$(slid+" ul li").each(function(index, el) {

			$(this).css("left",index*sWidth);

		});

		//鼠标滑上焦点图时停止自动播放，滑出时开始自动播放

		$(slid).hover(function() {

			clearInterval(picTimer);

		},function() {

			picTimer = setInterval(function() {

				showPics(index);

				index++;

				if(index == len) {index = 0;}

			},2000); //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

			$(slid+" ul").stop(true,false).animate({"margin-left":nowLeft},300); //通过animate()调整ul元素滚动到计算出的position

			$(slid+" .btn span").removeClass("on").eq(index).addClass("on"); //为当前的按钮切换到选中的效果

			$(slid+" .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

		}

	};

});

　　

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