我该如何自动旋转这个轮播图?
我正在按照这个轮播图教程进行操作,但我不知道如何让它自动旋转。
jQuery:
var items,length,deg,z,move = 0;
function rotate(direction)
{
move += direction;
for(var i = 0; i < length; i++)
{
items[i].style.transform = "rotateY("+(deg*(i+move))+"deg) translateZ("+z+"px)";
}
}
function load()
{
items = document.getElementsByClassName('item');
length = items.length;
deg = 360 / length;
z = (items[0].offsetWidth / 2) / Math.tan((deg / 2) * (Math.PI / 180));
for(var i = 0; i < length; i++)
{
items[i].style.transform = "rotateY("+(deg*i)+"deg) translateZ("+z+"px)";
}
}
window.addEventListener('load', load);
CSS:
*
{
box-sizing:border-box;
}
html ,body
{
margin:0;
padding:0;
height:100%;
}
.carousel
{
width:400px;
height:200px;
position:relative;
top:50%;
left:50%;
transform:translateX(-50%) translateY(-50%);
perspective:1000px;
transform-style: preserve-3d;
}
.carousel .item
{
width:100%;
height:100%;
position:absolute;
border: 1px solid black;
transition:transform 1s;
}
HTML:
<html>
<head>
<title>Practice</title>
<meta charset="UTF-8">
<link rel="stylesheet" type="text/css" href="css.css">
</head>
<body>
<div class="carousel">
<div class="item"><img src="image/logo.jpg" style="height:199px; width:398px;"></div>
<div class="item"><img src="image/slide1.jpg" style="height:199px; width:398px;"></div>
<div class="item"><img src="image/slide2.jpg" style="height:199px; width:398px;"></div>
<div class="item"><img src="image/slide3.jpg" style="height:199px; width:398px;"></div>
</div>
<button onclick="rotate(1)">Rotate</button>
<script src="carousel.js"></script>
</body>
</html>