在HTML中用css如何实现图片切换！！！_安全

该切换特效实现很简单，而且兼容性很好。
html页面如下

css样式

{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;}
wrapper {width:800px; margin:0 auto; padding-bottom:50px;}
/ qqshop focus /
#focus {width:800px; height:280px; overflow:hidden; position:relative;}
#focus ul {height:380px; position:absolute;}
#focus ul li {float:left; width:800px; height:280px; overflow:hidden; position:relative; background:#000;}
#focus ul li div {position:absolute; overflow:hidden;}
#focus btnBg {position:absolute; width:800px; height:20px; left:0; bottom:0; background:#000;}
#focus btn {position:absolute; width:780px; 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 spanon {background:#fff;}
#focus preNext {width:45px; height:100px; position:absolute; top:90px; background:url(img/spritepng) no-repeat 0 0; cursor:pointer;}
#focus pre {left:0;}
#focus next {right:0; background-position:right top;}
</style>

js脚本

$(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",05);
//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",04)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",02)hover(function() {
$(this)stop(true,false)animate({"opacity":"05"},300);
},function() {
$(this)stop(true,false)animate({"opacity":"02"},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 = -indexsWidth; //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":"04"},300)eq(index)stop(true,false)animate({"opacity":"1"},300); //为当前的按钮切换到选中的效果
}
});

用到的左右切换

HTML中轮播代码如下：

<!DOCTYPE html>
<html>
<head><title>轮播代码</title>
<meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=10,maximum-scale=10,minimum-scale=10,user-scalable=0">
</head>
<style type="text/css">
    body{max-width: 640px;margin: 0 auto;}
    #lunbo ul li{width:100%;list-style: none;width:640px; height:250px;background-color: #f00;text-align: center;}
    #lunbo ul li:not(:first-child){display: none;}</style><body><div id="lunbo">
    <ul>
        <li>1</li>
        <li>2</li>
        <li>3</li>
        <li>4</li>
    </ul></div><script type="text/javascript">
    //因为使用了document，所以js需要放在需要执行的代码下面生效才能生效
    var li=documentgetElementById('lunbo')getElementsByTagName("li");
    var num=0;
    var len=lilength;
    setInterval(function(){
        li[num]styledisplay="none";
        num=++num==len0:num;
        li[num]styledisplay="inline-block";
    },3000);//切换时间
</script>
</body>
</html>

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<script type="text/javascript">
windowonload=function(){
var oImg=documentgetElementById('img1');
var arrImgUrl=["img/1jpg","img/2jpg","img/3jpg","img/4jpg"]
var num=0;
function Tab(){
num++;
if(num>arrImgUrllength-1){
num=0;
}
oImgsrc=arrImgUrl[num];
}
setInterval(Tab,1000)
}
</script>
</head>
<body>
<img id="img1" src="img/1jpg" width="288">
</body>
</html>
注意放在名称为 img 的文件夹中，而且是格式的，否则需要修改html

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原文地址: http://outofmemory.cn/yw/13382161.html

在HTML中用css如何实现图片切换！！！

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