js实现焦点图自动播，鼠标左右控制播和底下小圈控制播
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>焦点轮播图</title>
<style type="text/css">
*{ margin: 0; padding: 0; text-decoration: none;}
body { padding: 100px;}
#container { 600px; height: 400px; border: 3px solid #333; overflow: hidden; position: relative;}
#list { 4200px; height: 400px; position: absolute; z-index: 1;}
#list img { float: left;}
#buttons { position: absolute; height: 10px; 100px; z-index: 2; bottom: 20px; left: 250px;}
#buttons span { cursor: pointer; float: left; border: 1px solid #fff; 10px; height: 10px; border-radius: 50%; background: #333; margin-right: 5px;}
#buttons .on { background: orangered;}
.arrow { cursor: pointer; display: none; line-height: 39px; text-align: center; font-size: 36px; font-weight: bold;
40px; height: 40px; position: absolute; z-index: 2; top: 180px; background-color: RGBA(0,0,0,.3);
color: #fff;}
.arrow:hover { background-color: RGBA(0,0,0,.7);}
#container:hover .arrow { display: block;}
#prev { left: 20px;}
#next { right: 20px;}
</style>
</head>
<body>
<div id="container">
<div id="list" style="left: 0px;">
<img src="img/5.jpg" alt="1"/>
<img src="img/1.jpg" alt="1"/>
<img src="img/2.jpg" alt="2"/>
<img src="img/3.jpg" alt="3"/>
<img src="img/4.jpg" alt="4"/>
<img src="img/5.jpg" alt="5"/>
<img src="img/1.jpg" alt="5"/>
</div>
<div id="buttons">
<span index="1" class="on"></span>
<span index="2"></span>
<span index="3"></span>
<span index="4"></span>
<span index="5"></span>
</div>
<a href="javascript:;" id="prev" class="arrow"><</a>
<a href="javascript:;" id="next" class="arrow">></a>
</div>
</body>
</html>
<script type="text/javascript">
window.onload = function () {
var container = document.getElementById('container');
var list = document.getElementById('list');
var buttons = document.getElementById('buttons').getElementsByTagName('span');
var prev = document.getElementById('prev');
var next = document.getElementById('next');
var index = 1;
var len = 5;
var animated = false;
var interval = 3000;
var timer;
function animate (offset) {
if (offset == 0) {
return;
}
animated = true;
var time = 300;
var inteval = 10;
var speed = offset/(time/inteval);
var left = parseInt(list.style.left) + offset;
var go = function (){
if ( (speed > 0 && parseInt(list.style.left) < left) || (speed < 0 && parseInt(list.style.left) > left)) {
list.style.left = parseInt(list.style.left) + speed + 'px';
setTimeout(go, inteval);
}
else {
list.style.left = left + 'px';
if(left>-200){
list.style.left = -600 * len + 'px';
}
if(left<(-600 * len)) {
list.style.left = '-600px';
}
animated = false;
}
}
go();
}
function showButton() {
for (var i = 0; i < buttons.length ; i++) {
if( buttons[i].className == 'on'){
buttons[i].className = '';
break;
}
}
buttons[index - 1].className = 'on';
}
function play() {
timer = setTimeout(function () {
next.onclick();
play();
}, interval);
}
function stop() {
clearTimeout(timer);
}
next.onclick = function () {
if (animated) {
return;
}
if (index == 5) {
index = 1;
}
else {
index += 1;
}
animate(-600);
showButton();
}
prev.onclick = function () {
if (animated) {
return;
}
if (index == 1) {
index = 5;
}
else {
index -= 1;
}
animate(600);
showButton();
}
for (var i = 0; i < buttons.length; i++) {
buttons[i].onclick = function () {
if (animated) {
return;
}
if(this.className == 'on') {
return;
}
var myIndex = parseInt(this.getAttribute('index'));
var offset = -600 * (myIndex - index);
animate(offset);
index = myIndex;
showButton();
}
}
container.onmouseover = stop;
container.onmouseout = play;
play();
}
</script>
jquery实现焦点图轮播效果
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>query焦点轮播图</title>
<style type="text/css">
*{ margin: 0; padding: 0; text-decoration: none;}
body { padding: 20px;}
#container { 600px; height: 400px; border: 3px solid #333; overflow: hidden; position: relative;}
#list { 4200px; height: 400px; position: absolute; z-index: 1;}
#list img { float: left;}
#buttons { position: absolute; height: 10px; 100px; z-index: 2; bottom: 20px; left: 250px;}
#buttons span { cursor: pointer; float: left; border: 1px solid #fff; 10px; height: 10px; border-radius: 50%; background: #333; margin-right: 5px;}
#buttons .on { background: orangered;}
.arrow { cursor: pointer; display: none; line-height: 39px; text-align: center; font-size: 36px; font-weight: bold; 40px; height: 40px; position: absolute; z-index: 2; top: 180px; background-color: RGBA(0,0,0,.3); color: #fff;}
.arrow:hover { background-color: RGBA(0,0,0,.7);}
#container:hover .arrow { display: block;}
#prev { left: 20px;}
#next { right: 20px;}
</style>
<script type="text/javascript" src="js/jquery.1.10.2.js"></script>
<script type="text/javascript">
$(function () {
var container = $('#container');
var list = $('#list');
var buttons = $('#buttons span');
var prev = $('#prev');
var next = $('#next');
var index = 1;
var len = 5;
var interval = 3000;
var timer;
function animate (offset) {
var left = parseInt(list.css('left')) + offset;
if (offset>0) {
offset = '+=' + offset;
}
else {
offset = '-=' + Math.abs(offset);
}
list.animate({'left': offset}, 300, function () {
if(left > -200){
list.css('left', -600 * len);
}
if(left < (-600 * len)) {
list.css('left', -600);
}
});
}
function showButton() {
buttons.eq(index-1).addClass('on').siblings().removeClass('on');
}
function play() {
timer = setTimeout(function () {
next.trigger('click');
play();
}, interval);
}
function stop() {
clearTimeout(timer);
}
next.bind('click', function () {
if (list.is(':animated')) {
return;
}
if (index == 5) {
index = 1;
}
else {
index += 1;
}
animate(-600);
showButton();
});
prev.bind('click', function () {
if (list.is(':animated')) {
return;
}
if (index == 1) {
index = 5;
}
else {
index -= 1;
}
animate(600);
showButton();
});
buttons.each(function () {
$(this).bind('click', function () {
if (list.is(':animated') || $(this).attr('class')=='on') {
return;
}
var myIndex = parseInt($(this).attr('index'));
var offset = -600 * (myIndex - index);
animate(offset);
index = myIndex;
showButton();
})
});
container.hover(stop, play);
play();
});
</script>
</head>
<body>
<div id="container">
<div id="list" style="left: -600px;">
<img src="img/5.jpg" alt="1"/>
<img src="img/1.jpg" alt="1"/>
<img src="img/2.jpg" alt="2"/>
<img src="img/3.jpg" alt="3"/>
<img src="img/4.jpg" alt="4"/>
<img src="img/5.jpg" alt="5"/>
<img src="img/1.jpg" alt="5"/>
</div>
<div id="buttons">
<span index="1" class="on"></span>
<span index="2"></span>
<span index="3"></span>
<span index="4"></span>
<span index="5"></span>
</div>
<a href="javascript:;" id="prev" class="arrow"><</a>
<a href="javascript:;" id="next" class="arrow">></a>
</div>
</body>
</html>