Code implemented in javascript that is fully compatible with mouse scroll wheel zooming of images_javascript skills

The code is as follows:

Copy code The code is as follows:

/*!
*author: Code implemented in javascript that is fully compatible with mouse scroll wheel zooming of images_javascript skills
*blog:http://www.cnblogs.com/Code implemented in javascript that is fully compatible with mouse scroll wheel zooming of images_javascript skills
*date:2010-2-4
*/
var zooming=function(e){
e= window.event ||e;
var o=this,data=e.wheelDelta || e.detail*40,zoom,size;
if(! 'v1'){
zoom = parseInt( o.style.zoom) || 100;
zoom = data / 12;
if(zoom > zooming.min)
o.style.zoom = zoom '%';
}else {
size=o.getAttribute("_zoomsize").split(",");
zoom=parseInt(o.getAttribute("_zoom")) ||100;
zoom =data/12 ;
if(zoom>zooming.min){
o.setAttribute("_zoom",zoom);
o.style.width=size[0]*zoom/100 "px";
o.style.height=size[1]*zoom/100 "px";
}
}
};
zooming.add=function(obj,min){//First Each parameter specifies the image that can be zoomed, min specifies the minimum zoom size, default to 50
zooming.min=min || 50;
obj.onmousewheel=zooming;
if(/a/[-1 ]=='a')//if Firefox
obj.addEventListener("DOMMouseScroll",zooming,false);
if(-[1,]){//if not IE
obj.setAttribute ("_zoomsize",obj.offsetWidth "," obj.offsetHeight);
}
};

window.onload=function(){//Put it in onload, otherwise it will not be in ie There will be an error in calculating the image size
zooming.add(document.getElementById("testimg1"));
}

Demo code

<title>Scroll the mouse to zoom the image</title> <meta name="author" content="Code implemented in javascript that is fully compatible with mouse scroll wheel zooming of images_javascript skills"> <meta name="Keywords" content="鼠标滚动缩放图片，兼容IE,FF,Chrome,Safari,Opera"> <style type="text/css"> /* pre style*/ body,th,td {font-size:12px;font-family:Verdana,Tahoma,Arial,'5b8b4f53','5FAE8F6F96C59ED1',sans-serif;} body,th,td,ol,ul,li,dl,dt,dd,h1,h2,h3,h4,h5,h6,pre,form,fieldset,legend,input,button,textarea,p {margin:0;padding:0;} li { list-style-type:none;} a {color:#3366CC; text-decoration:none;} a:hover {color:#FF6600;text-decoration:underline;} /************************************************************/ #div1 {width:300px;margin:100px 35%;line-height:22px;} </style> <div id="div1"> <img src="http://files.jb51.net/upload/2010-2/20100204144849603.jpg" id="testimg1" alt="Code implemented in javascript that is fully compatible with mouse scroll wheel zooming of images_javascript skills"> <div>The default minimum zoom is 50% of the original image</div> <div><a href="http://www.jb51.net">Script House</a></div> </div>
[Ctrl A Select all Note: If you need to introduce external Js, you need to refresh to execute

]
ps: Because this page has Scroll bar, so if it is placed directly on the page, the page will scroll instead of the picture. I don’t know if there is any solution.