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fn.html
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fn.html
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<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<style>
* {
margin: 0;
padding: 0;
}
li {
list-style: none;
}
img {
border: 0;
}
#container {
width: 520px;
height: 280px;
position: relative;
margin: 100px auto;
}
#imgs img {
display: none;
}
#imgs .selected {
display: block;
}
#nav {
position: absolute;
right: 10px;
bottom: 10px;
}
#narrow div, #nav li {
width: 20px;
height: 20px;
margin-right: 5px;
background: black;
color: white;
text-align: center;
line-height: 20px;
float: left;
cursor: pointer;
}
#nav .selected {
background: orange;
}
#narrow {
position: absolute;
left: 10px;
bottom: 10px;
}
</style>
</head>
<body>
<div id="container">
<div id="imgs">
<img src="img/1.jpg" alt="" class="selected"/>
<img src="img/2.jpg" alt=""/>
<img src="img/3.jpg" alt=""/>
<img src="img/4.jpg" alt=""/>
</div>
<ul id="nav">
<li class="selected">1</li>
<li>2</li>
<li>3</li>
<li>4</li>
</ul>
<div id="narrow">
<div id="left"><</div>
<div id="right">></div>
</div>
</div>
<script src="jquery-1.11.2.js"></script>
<script>
$(function () {
var nowIndex = 0;
var timer;
function change() {
$('#nav li').eq(nowIndex).addClass("selected").siblings().removeClass("selected");
$("#imgs img").eq(nowIndex).addClass("selected").siblings().removeClass("selected");
}
$('#nav li').on("mouseover", function () {
nowIndex = $(this).index();
change();
});
$("#narrow div").on("click", function () {
if ($(this).attr("id") == "left") {
nowIndex--;
if (nowIndex == -1) {
nowIndex = $("#nav li").length - 1;
}
} else {
nowIndex++;
//这是nav下的li，长度是4，如果是nav长度是1
if (nowIndex == $("#nav li").length - 1) {
nowIndex = 0;
}
}
change();
});
function play(){
timer = setInterval(function(){
$("#narrow #right").trigger("click");
},1000);
}
$("#container").hover(function(){
clearInterval(timer);
},function(){
play();
});
play();
})
</script>
</body>
</html>