我正在为我的客户使用背景图片制作一个CSS3登陆页面。我无法将图像预加载。
我看到了这种方法但不确定如何将其应用于此方案:http://perishablepress.com/preload-images-css3/
HTML:
<!DOCTYPE html>
<!--[if lt IE 7 ]>
<html class="ie ie6 no-js" lang="en">
<![endif]-->
<!--[if IE 7 ]>
<html class="ie ie7 no-js" lang="en">
<![endif]-->
<!--[if IE 8 ]>
<html class="ie ie8 no-js" lang="en">
<![endif]-->
<!--[if IE 9 ]>
<html class="ie ie9 no-js" lang="en">
<![endif]-->
<!--[if gt IE 9]><!-->
<html class="no-js" lang="en">
<!--<![endif]-->
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>MUSEIAM.ca</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="MUSEIAM.ca" />
<meta name="keywords" content="keyword1, keyword2" />
<meta name="author" content="MUSEIAM.ca" />
<link rel="shortcut icon" href="../favicon.ico">
<link rel="stylesheet" type="text/css" href="css/style1.css" />
<script type="text/javascript" src="js/modernizr.custom.86080.js"></script>
</head>
<body id="page">
<div id class="cb-slideshow">
<li><span>Image 01</span></li>
<li><span>Image 02</span></li>
<li><span>Image 03</span></li>
<li><span>Image 04</span></li>
<li><span>Image 05</span></li>
<li><span>Image 06</span></li>
</ul>
<IMG class="logo" src="images/logo.png" alt="...">
<a href="#"><IMG class="enter" src="images/enter.png" alt="..." onmouseover="this.src='images/enter2.png'" onmouseout="this.src='images/enter.png'" ></a><a href="#"><IMG class="enter2" src="images/entrer.png" alt="..." onmouseover="this.src='images/entrer2.png'" onmouseout="this.src='images/entrer.png'" ></a>
<div id="footer">© 2014 MUSEIAM.CA. All Rights Reserved.</div>
</body>
</html>
CSS:
@font-face {
font-family: 'BebasNeueRegular';
src: url('fonts/BebasNeue-webfont.eot');
src: url('fonts/BebasNeue-webfont.eot?#iefix') format('embedded-opentype'),
url('fonts/BebasNeue-webfont.woff') format('woff'),
url('fonts/BebasNeue-webfont.ttf') format('truetype'),
url('fonts/BebasNeue-webfont.svg#BebasNeueRegular') format('svg');
font-weight: normal;
font-style: normal;
}
/* CSS reset */
body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,textarea,p,blockquote,th,td {
margin:0;
padding:0;
}
html,body {
margin:0;
padding:0;
}
table {
border-collapse:collapse;
border-spacing:0;
}
fieldset,img {
border:0;
}
input{
border:1px solid #b0b0b0;
padding:3px 5px 4px;
color:#979797;
width:190px;
}
address,caption,cite,code,dfn,th,var {
font-style:normal;
font-weight:normal;
}
ol,ul {
list-style:none;
}
caption,th {
text-align:left;
}
h1,h2,h3,h4,h5,h6 {
font-size:100%;
font-weight:normal;
}
q:before,q:after {
content:'';
}
abbr,acronym { border:0;
}
/* General Demo Style */
body{
font-family: Constantia, Palatino, "Palatino Linotype", "Palatino LT STD", Georgia, serif;
background: #000;
font-weight: 400;
font-size: 15px;
color: #aa3e03;
overflow-y: scroll;
overflow-x: hidden;
}
.ie7 body{
overflow:hidden;
}
a{
color: #333;
text-decoration: none;
}
t-align: center;
}
.clr{
clear: both;
}
img.logo{
position: absolute;
top: 180px;
bottom: 0;
left: 0;
right: 0;
margin: auto;
}
img.enter{
position: absolute;
top: 340px;
bottom: 0;
left: -105px;
right: 0;
margin: auto;
padding: 0px 0px 50px 0px;
}
img.enter2{
position: absolute;
top: 340px;
bottom: 0;
left: 105px;
right: 0;
margin: auto;
padding: 0px 0px 50px 0px;
}
#footer {
font-family: "Times New Roman", Times, serif;
font-size: 12px;
position: fixed;
bottom: 0;
right: 5px;
text-align: right;
color: #fff;
}
/* Media Queries */
@media screen and (max-width: 767px) {
.container > header{
text-align: center;
}
}lor: #fff;
}
.cb-slideshow,
.cb-slideshow:after {
position: fixed;
width: 100%;
height: 100%;
top: 0px;
left: 0px;
z-index: 0;
}
.cb-slideshow:after {
content: '';
background: transparent url(../images/pattern.png) repeat top left;
}
.cb-slideshow li span {
width: 100%;
height: 100%;
position: absolute;
top: 0px;
left: 0px;
color: transparent;
background-size: cover;
background-position: 50% 50%;
background-repeat: none;
opacity: 0;
z-index: 0;
-webkit-backface-visibility: hidden;
-webkit-animation: imageAnimation 36s linear infinite 0s;
-moz-animation: imageAnimation 36s linear infinite 0s;
-o-animation: imageAnimation 36s linear infinite 0s;
-ms-animation: imageAnimation 36s linear infinite 0s;
animation: imageAnimation 36s linear infinite 0s;
}
.cb-slideshow li div {
z-index: 1000;
position: absolute;
bottom: 30px;
left: 0px;
width: 100%;
text-align: center;
opacity: 0;
color: #fff;
-webkit-animation: titleAnimation 36s linear infinite 0s;
-moz-animation: titleAnimation 36s linear infinite 0s;
-o-animation: titleAnimation 36s linear infinite 0s;
-ms-animation: titleAnimation 36s linear infinite 0s;
animation: titleAnimation 36s linear infinite 0s;
}
.cb-slideshow li div h3 {
font-family: 'BebasNeueRegular', 'Arial Narrow', Arial, sans-serif;
font-size: 240px;
padding: 0;
line-height: 200px;
}
.cb-slideshow li:nth-child(1) span {
background-image: url(../images/1.jpg)
}
.cb-slideshow li:nth-child(2) span {
background-image: url(../images/2.jpg);
-webkit-animation-delay: 6s;
-moz-animation-delay: 6s;
-o-animation-delay: 6s;
-ms-animation-delay: 6s;
animation-delay: 6s;
}
.cb-slideshow li:nth-child(3) span {
background-image: url(../images/3.jpg);
-webkit-animation-delay: 12s;
-moz-animation-delay: 12s;
-o-animation-delay: 12s;
-ms-animation-delay: 12s;
animation-delay: 12s;
}
.cb-slideshow li:nth-child(4) span {
background-image: url(../images/4.jpg);
-webkit-animation-delay: 18s;
-moz-animation-delay: 18s;
-o-animation-delay: 18s;
-ms-animation-delay: 18s;
animation-delay: 18s;
}
.cb-slideshow li:nth-child(5) span {
background-image: url(../images/5.jpg);
-webkit-animation-delay: 24s;
-moz-animation-delay: 24s;
-o-animation-delay: 24s;
-ms-animation-delay: 24s;
animation-delay: 24s;
}
.cb-slideshow li:nth-child(6) span {
background-image: url(../images/6.jpg);
-webkit-animation-delay: 30s;
-moz-animation-delay: 30s;
-o-animation-delay: 30s;
-ms-animation-delay: 30s;
animation-delay: 30s;
}
.cb-slideshow li:nth-child(2) div {
-webkit-animation-delay: 6s;
-moz-animation-delay: 6s;
-o-animation-delay: 6s;
-ms-animation-delay: 6s;
animation-delay: 6s;
}
.cb-slideshow li:nth-child(3) div {
-webkit-animation-delay: 12s;
-moz-animation-delay: 12s;
-o-animation-delay: 12s;
-ms-animation-delay: 12s;
animation-delay: 12s;
}
.cb-slideshow li:nth-child(4) div {
-webkit-animation-delay: 18s;
-moz-animation-delay: 18s;
-o-animation-delay: 18s;
-ms-animation-delay: 18s;
animation-delay: 18s;
}
.cb-slideshow li:nth-child(5) div {
-webkit-animation-delay: 24s;
-moz-animation-delay: 24s;
-o-animation-delay: 24s;
-ms-animation-delay: 24s;
animation-delay: 24s;
}
.cb-slideshow li:nth-child(6) div {
-webkit-animation-delay: 30s;
-moz-animation-delay: 30s;
-o-animation-delay: 30s;
-ms-animation-delay: 30s;
animation-delay: 30s;
}
/* Animation for the slideshow images */
@-webkit-keyframes imageAnimation {
0% { opacity: 0;
-webkit-animation-timing-function: ease-in; }
8% { opacity: 1;
-webkit-animation-timing-function: ease-out; }
17% { opacity: 1 }
25% { opacity: 0 }
100% { opacity: 0 }
}
@-moz-keyframes imageAnimation {
0% { opacity: 0;
-moz-animation-timing-function: ease-in; }
8% { opacity: 1;
-moz-animation-timing-function: ease-out; }
17% { opacity: 1 }
25% { opacity: 0 }
100% { opacity: 0 }
}
@-o-keyframes imageAnimation {
0% { opacity: 0;
-o-animation-timing-function: ease-in; }
8% { opacity: 1;
-o-animation-timing-function: ease-out; }
17% { opacity: 1 }
25% { opacity: 0 }
100% { opacity: 0 }
}
@-ms-keyframes imageAnimation {
0% { opacity: 0;
-ms-animation-timing-function: ease-in; }
8% { opacity: 1;
-ms-animation-timing-function: ease-out; }
17% { opacity: 1 }
25% { opacity: 0 }
100% { opacity: 0 }
}
@keyframes imageAnimation {
0% { opacity: 0;
animation-timing-function: ease-in; }
8% { opacity: 1;
animation-timing-function: ease-out; }
17% { opacity: 1 }
25% { opacity: 0 }
100% { opacity: 0 }
}
/* Animation for the title */
@-webkit-keyframes titleAnimation {
0% { opacity: 0 }
8% { opacity: 1 }
17% { opacity: 1 }
19% { opacity: 0 }
100% { opacity: 0 }
}
@-moz-keyframes titleAnimation {
0% { opacity: 0 }
8% { opacity: 1 }
17% { opacity: 1 }
19% { opacity: 0 }
100% { opacity: 0 }
}
@-o-keyframes titleAnimation {
0% { opacity: 0 }
8% { opacity: 1 }
17% { opacity: 1 }
19% { opacity: 0 }
100% { opacity: 0 }
}
@-ms-keyframes titleAnimation {
0% { opacity: 0 }
8% { opacity: 1 }
17% { opacity: 1 }
19% { opacity: 0 }
100% { opacity: 0 }
}
@keyframes titleAnimation {
0% { opacity: 0 }
8% { opacity: 1 }
17% { opacity: 1 }
19% { opacity: 0 }
100% { opacity: 0 }
}
/* Show at least something when animations not supported */
.no-cssanimations .cb-slideshow li span{
opacity: 1;
}
@media screen and (max-width: 1140px) {
.cb-slideshow li div h3 { font-size: 140px }
}
@media screen and (max-width: 600px) {
.cb-slideshow li div h3 { font-size: 80px }
}
感谢您的关注。
答案 0 :(得分:0)
这就是我为预加载做的事情。
var imageArray = new Array();
window.onload = function(){
for(i = 0; i <= maxIndex; ++i)
{
var image = new Image();
image.src = "images/myImage" + Number(i + 1) + ".jpg";
imageArray[i] = image;
}
}
将所有图像命名为:myImage1.jpg,myImage2.jpg等。 然后只需遍历此数组即可更改图像。 maxIndex是你有多少张照片。