This article mainly introduces the js implementation of single picture translation switching effect in detail. After a picture is moved to the left, it is moved from the bottom back to the right and waits for the next cycle. Then let's study this article.
Since I don’t need the manual switching function, I deleted that part of the content, mainly to increase the seamless switching effect.
The principle is also very simple. After moving a picture to the left, it moves back to the right from the bottom and waits for the next cycle.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="js/jquery-1.10.1.min.js"></script>
</head>
<body>
<p class="wrapper">
<h1 id="jquer实现图片切换">jquer实现图片切换</h1>
<p id="focus">
<ul>
<!-- 这里有三个z-index的设置 -->
<li><p class="switch_pic" style="z-index: 3;background: url('imgs/01.jpg') center center;background-size: cover;"></p></li>
<li><p class="switch_pic" style="z-index: 2;background: url('imgs/02.jpg') center center;background-size: cover;"></p></li>
<li><p class="switch_pic" style="z-index: 1;background: url('imgs/03.jpg') center center;background-size: cover;"></p></li>
<li><p class="switch_pic" style="background: url('imgs/04.jpg') center center;background-size: cover;"></p></li>
<li><p class="switch_pic" style="background: url('imgs/meiko2.jpg') center center;background-size: cover;"></p></li>
<li><p class="switch_pic" style="background: url('imgs/meiko7.jpg') center center;background-size: cover;"></p></li>
</ul>
</p>
</p>
<script type="text/javascript">
$(function() {
var sWidth = $("#focus").width();
var len = $("#focus ul li").length;
var index = 0;
var picTimer;
var $pics = $("#focus ul li").find('.switch_pic');//获取所有图片
showPics(index); //网页打开立即执行一次动画
picTimer = setInterval(function() {
index++;
if(index == len) {index = 0;}
showPics(index);
},3000);//3000毫秒的间隔
//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 = -sWidth; //每次移动固定量
var $pic = $pics.eq(index);//获取当前要移出的图片
var $nexPic = $pics.eq((index+1)%len);//当前要移入的图片
var $nexnexPic = $pics.eq((index+2)%len);//下一个要移入的图片
$nexPic.css("left",sWidth);//下一个图片移动到最右
//当前要移出的图片开始左移，模式设为平滑"linear"，速度和间隔一样
$pic.animate({"left":nowLeft},3000,"linear",function(){
// 当前图片完全移出后，重新设置z-index
$pic.css("z-index",1);
$nexPic.css("z-index",3);
$nexnexPic.css("z-index",2);
});
//当前要移入的图片同时左移
$nexPic.animate({"left":0},3000,"linear");
}
});
</script>
<style type="text/css">
*{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;}
h1{height:50px;line-height:50px;font-size:22px;font-weight:normal;font-family:"Microsoft YaHei",SimHei;margin-bottom:20px;}
#focus{width:450px;height:350px;overflow:hidden;position:relative;}
#focus ul{height:380px;position:absolute;}
#focus ul li{float:left;width:450px;height:350px;overflow:hidden;position:absolute;background:#000;}
#focus ul li p{position:absolute;overflow:hidden;width: 450px;height: 350px;}
</style>
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