我已经寻找了各种答案,找到了类似的问题,但这些答案并不适用于我的情况。事实上,我很新手,所以我没有能力将找到的答案应用到我的问题上。
问题是:
我有一个 Div,当缩略图被点击时,Div 图像通过 JavaScript/jQuery 脚本替换为另一张图片(我不确定确切的方式,也许有人可以澄清)。这个功能正常工作,但问题在于页面会回滚到顶部,用户必须再次向下滚动才能看到替换后的图片。
我在网上查找了一些资料,发现在 JavaScript 中添加“return false”语句可能有帮助,但我已经查看过代码,并发现“return false”已经存在。
另一个选择是使用基于 JavaScript cookie 的解决方案,在其中发送一个 cookie,并通过读取 cookie 来保持浏览器滚动位置,然而我好像无法让这个解决方案起作用,我认为这个问题可能是由于我正在本地托管造成的,但我也可能错了……
第三个选择是使用 PHP 脚本,但我没有找到明确的答案,并且这意味着我将不得不学习 PHP(这是我以后肯定要学习的东西)。
以下是 JavaScript 代码:
<script type="text/javascript">
$(document).ready(function() {
$('.galleryicon').live("click", function() {
$('#mainImage').hide();
$('#cakebox').css('background-image', "url('ajax-loader.gif')");
var i = $('<img />').attr('src',this.href).load(function() {
$('#mainImage').attr('src', i.attr('src'));
$('#cakebox').css('background-image', 'none');
$('#mainImage').fadeIn();
});
return false;
});
});
</script>
这是HTML代码:
<div class="cakecont">
<div id="cakebox">
<img src="../images/cakes/babycake1.png" alt="Main Image" id="mainImage"/>
<div class="pageinfo2">
<h3>Cake Type 1</h3>
<h6>£2.00</h6>
</div>
<div class="infobox">
<h6> Description </h6>
</div>
<div class="gallerybox">
<a href="../images/cakes/babycaketop.png" class="galleryicon">
<img src="../images/thumbs/babycaketopsml.png" alt="Thumbnail 2"/></a>
<a href="../images/cakes/babycake1.png" class="galleryicon">
<img src="../images/thumbs/babycakesml.png" alt="Image 1"/></a>
</div>
</div>
</div>
这是一个工作演示链接 http://micahcarrick.com/code/jquery-image-swap/index.html
我已尝试自行解决这个问题。这是我在建立网站过程中第一个需要提问的问题,所有之前遇到的问题都是通过谷歌解决的,但这个问题超出了我的搜索引擎技能。
以下是该页面的所有HTML代码,以防其他脚本覆盖了“新”修改后的JavaScript代码:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org /TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Cupcakes & Cakes for Birthday/Wedding Gift in Bournemouth Dorset - SweetVision</title>
<meta name="keywords" content="cupcakes, cake, gift, wedding, birthday, Bournemouth, Dorset" />
<meta name="description" content="For the finest Cupcakes and Cakes in Bournemouth Dorset look no further, Sweetvision specialise in baked goods for Weddings, Birthdays, Baby Showers, Easter, Halloween, Christmas" />
<meta name="robots" content="ALL" />
<meta http-equiv= "Content-Language" content="en" />
<meta name="Publisher" content="Sweet Vision" />
<meta name="Copyright" content="Copyright 2012, Sweet Vision, All rights reserved." />
<meta name="Author" content="Mark Webb for Sweet Vision - www.sweetvision.co.uk" />
<link href="../images/homepage/favicon.ico" type="image/vnd.microsoft.icon" rel="shortcut icon" />
<link href="../root/css/sweetvision.css" rel="stylesheet" type="text/css" />
<script src="../js/jquery-1.4.2.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function() {
$('.galleryicon').live("click", function(e) { // the (e) represent the event
$('#mainImage').hide();
$('#cakebox').css('background-image', "url('ajax-loader.gif')");
var i = $('<img />').attr('src',this.href).load(function() {
$('#mainImage').attr('src', i.attr('src'));
$('#cakebox').css('background-image', 'none');
$('#mainImage').fadeIn();
});
e.preventDefault(); //Prevent default click action which is causing the
return false; //page to scroll back to the top
});
});
</script>
<script src="../js/s3Slider.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function() {
$('#s3slider').s3Slider({
timeOut: 4000
});
});
</script>
<script src="../js/SpryMenuBar.js" type="text/javascript"></script>
<link href="../root/css/SpryMenuBarHorizontal.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div class="container">
<div class="sprybox">
<ul id="check_menu" class="MenuBarHorizontal">
<li><a href="../root/index.html">Home</a></li>
<li><a href="../root/aboutus.html" class="MenuBarItemSubmenu">About Us</a>
<ul>
<li><a href="../root/contactus.html">Contact</a></li>
<li><a href="../root/news.html">News</a></li>
<li><a href="../root/events.html">Events</a></li>
</ul>
</li>
<li><a href="../root/ourmenu.html">Our Menu</a></li>
<li><a href="gallery.html">Gallery</a></li>
</ul>
<div class="mainmenu">
<a href="../root/mainmenu.html">
<img src="../images/buttons/mainmenu.png" />
</a>
</div>
<div class="backbutton">
<a href="javascript:history.go(-1)">
<img src="../images/buttons/Backbutton.png" /></a>
</div>
</div> <!-- end.header --><!--end of sprybox -->
<!--end div element -->
<!-- thumbnails are links to the full size image -->
<div class="cakecont">
<div id="cakebox">
<img src="../images/cakes/babycake1.png" alt="Main Image" id="mainImage"/>
<div class="pageinfo2">
<h3>Cake Type 1</h3>
<h6>£2.00</h6>
</div>
<div class="infobox">
<h6> Description </h6>
</div>
<div class="gallerybox">
<a href="../images/cakes/babycaketop.png" class="galleryicon">
<img src="../images/thumbs/babycaketopsml.png" alt="Thumbnail 2"/></a>
<a href="../images/cakes/babycake1.png" class="galleryicon">
<img src="../images/thumbs/babycakesml.png" alt="Image 1"/></a>
</div>
</div>
</div>
<div class="footer">
<p>Copyright © 2012 by Mark Webb. All rights reserved.</p>
</div> <!-- end .footer -->
</div> <!-- end .container -->
<script type="text/javascript">
var MenuBar1 = new Spry.Widget.MenuBar("check_menu",{imgDown:"SpryAssets/SpryMenuBarDownHover.gif", imgRight:"SpryAssets/SpryMenuBarRightHover.gif"});
</script>
<script type="text/javascript">
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-29457683-1']);
_gaq.push(['_trackPageview']);
(function() {
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();
</script>
</body>
</html>