图片放大镜jquery.jqzoom.js使用实例附放大镜图标

1. jquery.jqzoom.js

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var bigwidth = $(".bigimg").get(0).offsetWidth;
var bigheight = $(".bigimg").get(0).offsetHeight;
var scaley = 'x';
var scalex = 'y';
if (isNaN(scalex) | isNaN(scaley))
{
var scalex = (bigwidth / imageWidth);
var scaley = (bigheight / imageHeight);
$("div.jqZoomPup").width((settings.xzoom) / scalex);
$("div.jqZoomPup").height((settings.yzoom) / scaley);
if (settings.lens)
{
$("div.jqZoomPup").css('visibility', 'visible');
}
}
xpos = mouse.x - $("div.jqZoomPup").width() / 2 - imageLeft;
ypos = mouse.y - $("div.jqZoomPup").height() / 2 - imageTop;
if (settings.lens)
{
xpos = (mouse.x - $("div.jqZoomPup").width() / 2 < imageLeft) ? 0 : (mouse.x + $("div.jqZoomPup").width() / 2 > imageWidth + imageLeft) ? (imageWidth - $("div.jqZoomPup").width() - 2) : xpos;
ypos = (mouse.y - $("div.jqZoomPup").height() / 2 < imageTop) ? 0 : (mouse.y + $("div.jqZoomPup").height() / 2 > imageHeight + imageTop) ? (imageHeight - $("div.jqZoomPup").height() - 2) : ypos;
}
if (settings.lens)
{
$("div.jqZoomPup").css({ top: ypos, left: xpos });
}
scrolly = ypos;
$("div.zoomdiv").get(0).scrollTop = scrolly * scaley;
scrollx = xpos;
$("div.zoomdiv").get(0).scrollLeft = (scrollx) * scalex;
});
}, function () {
$(this).children("img").attr("alt", noalt);
$(document.body).unbind("mousemove");
if (settings.lens)
{
$("div.jqZoomPup").remove();
}
$("div.zoomdiv").remove();
});
count = 0;
if (settings.preload)
{
$('body').append("sdsdssdsd");
$(this).each(function () {
var imagetopreload = $(this).children("img").attr("jqimg");
var content = jQuery('div.jqPreload' + count + '').html();
jQuery('div.jqPreload' + count + '').html(content + '');
});
}
}
})(jQuery);
function MouseEvent(e) {
this.x = e.pageX;
this.y = e.pageY;
}

2. jqzoom.css

.jqzoom{
border:1px solid #BBB;
float:left;
position:relative;
padding:0px;
cursor:pointer;
}
div.zoomdiv {
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;
}
div.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

附件：放大镜图标（zoomlens.gif）