isNaN(scaley))
{
var scalex = (bigwidth / imageWidth);
var scaley = (bigheight / imageHeight);
$("p.jqZoomPup").width((settings.xzoom) / scalex);
$("p.jqZoomPup").height((settings.yzoom) / scaley);
if (settings.lens)
{
$("p.jqZoomPup").css('visibility', 'visible');
}
}
xpos = mouse.x - $("p.jqZoomPup").width() / 2 - imageLeft;
ypos = mouse.y - $("p.jqZoomPup").height() / 2 - imageTop;
if (settings.lens)
{
xpos = (mouse.x - $("p.jqZoomPup").width() / 2 < imageLeft) ? 0 : (mouse.x + $("p.jqZoomPup").width() / 2 > imageWidth + imageLeft) ? (imageWidth - $("p.jqZoomPup").width() - 2) : xpos;
ypos = (mouse.y - $("p.jqZoomPup").height() / 2 < imageTop) ? 0 : (mouse.y + $("p.jqZoomPup").height() / 2 > imageHeight + imageTop) ? (imageHeight - $("p.jqZoomPup").height() - 2) : ypos;
}
if (settings.lens)
{
$("p.jqZoomPup").css({ top: ypos, left: xpos });
}
scrolly = ypos;
$("p.zoomp").get(0).scrollTop = scrolly * scaley;
scrollx = xpos;
$("p.zoomp").get(0).scrollLeft = (scrollx) * scalex;
});
}, function () {
$(this).children("img").attr("alt", noalt);
$(document.body).unbind("mousemove");
if (settings.lens)
{
$("p.jqZoomPup").remove();
}
$("p.zoomp").remove();
});
count = 0;
if (settings.preload)
{
$('body').append("<p style='display:none;' class='jqPreload" + count + "'>sdsdssdsd</p>");
$(this).each(function () {
var imagetopreload = $(this).children("img").attr("jqimg");
var content = jQuery('p.jqPreload' + count + '').html();
jQuery('p.jqPreload' + count + '').html(content + '<img src=\"' + imagetopreload + '\">');
});
}
}
})(jQuery);
function MouseEvent(e) {
this.x = e.pageX;
this.y = e.pageY;
}
2. jqzoom.css
/*jQzoom*/
.jqzoom{
border:1px solid #BBB;
float:left;
position:relative;
padding:0px;
cursor:pointer;
}
p.zoomp {
z-index: 999;
position : absolute;
top:0px;
left:0px;
width : 200px;
height : 200px;
background: #ffffff;
border:1px solid #CCCCCC;
display:none;
text-align: center;
overflow: hidden;
}
p.jqZoomPup {
z-index : 999;
visibility : hidden;
position : absolute;
top:0px;
left:0px;
width : 50px;
height : 50px;
border: 1px solid #aaa;
background: #ffffff url(../images/zoomlens.gif) 50% top no-repeat;
opacity: 0.5;
-moz-opacity: 0.5;
-khtml-opacity: 0.5;
filter: alpha(Opacity=50);
}3. html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>
<title></title>
<script src="jquery-1.8.2.min.js" type="text/javascript"></script>
<script src="jquery.jqzoom.js" type="text/javascript"></script>
<link href="jqzoom.css" rel="stylesheet" type="text/css" />
<script type="text/javascript">
/*使用jqzoom*/
$(function() {
$(".jqzoom").jqueryzoom({
xzoom: 400, //放大图的宽度(默认是 200)
yzoom: 400, //放大图的高度(默认是 200)
offset: 10, //离原图的距离(默认是 10)
position: "right", //放大图的定位(默认是 "right")
preload: 1
});
});
</script>
</head>
<body>
<p class="jqzoom">
<img src="images/shoe1_small.jpg" style="width:300px; height:300px;" alt="" jqimg="images/shoe1_big.jpg" id="bigImg"/>
</p>
</body>
</html>附件:放大镜图标(zoomlens.gif)

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关键词:图片放大镜jquery.jqzoom.js运用案例附放大镜图标