我在页面上有锚点,在鼠标悬停和鼠标移出时显示不同的背景图像。我已经预加载了图像,以避免在鼠标悬停/移出时闪烁并从服务器重新请求图像。这些脚本在 IE8/FF 上运行良好,但 Chrome 的行为不同。在最新版本的 Chrome 中,我第一次将鼠标悬停在锚点上时,从服务器重新请求图像导致闪烁,这是为什么?成功的鼠标悬停/移出工作正常,没有闪烁。
下面的代码:
<html>
<head>
<script src="http://code.jquery.com/jquery-1.8.3.min.js"></script>
<style type="text/css">
body:after
{
content: url('/images/1.png') url('/images/1a.png')
position: absolute;
top: -9999px;
left: -9999px;
}
.imageHover
{
display:inherit;
width:25px;
height:50px;
background:url('/images/1.png') no-repeat;
}
.imageOut
{
display:inherit;
width:25px;
height:50px;
background:url('/images/1a.png') no-repeat;
}
</style>
<script language="javascript" type="text/javascript">
var oneSelected = new Image();
var oneUnselected = new Image();
oneSelected.src="/images/1.png";
oneUnselected.src="/images/1a.png";
function OnImageMouseOver(target) {
$(target).toggleClass('imageHover', true);
$(target).toggleClass('imageOut', false);
}
function OnImageMouseOut(target) {
$(target).toggleClass('imageHover', false);
$(target).toggleClass('imageOut', true);
}
</script>
</head>
<body>
<a href="#" class="imageOut" onmouseover="OnImageMouseOver(this)" onmouseout="OnImageMouseOut(this)"></a>
</body>
</html>
将锚点转换为图像,但它仍然无法在 Chrome 中工作:
<html>
<head>
<script src="http://code.jquery.com/jquery-1.8.3.min.js"></script>
<script language="javascript" type="text/javascript">
if (document.images) {
var oneSelected = new Image();
var oneUnselected = new Image();
oneUnselected.src = '/images/1a.png';
oneSelected.src = '/images/1.png';
}
function OnRatingMouseOver(target, newSrc) {
$(target).attr('src', newSrc);
}
function OnRatingMouseOut(target, newSrc) {
$(target).attr('src', newSrc);
}
</script>
</head>
<body>
<div id="mainDiv" style="width:400px;">
<div id="inputDiv">
<table id="inputTable">
<tr>
<td>Rating</td>
<td>
<img id='rating1Anchor'
src='/images/1a.png'
onmouseover="OnRatingMouseOver(this, '/images/1.png');"
onmouseout="OnRatingMouseOut(this, '/images/1a.png');"
onclick="OnRatingClick(this, '/images/1.png', 1);">
</td>
</tr>
</table>
</div>
</div>
</body>
<html>