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I want to compare image before uploading to be of x by y pixels within file upload control in asp.net How can I get image size in File Uploader in pixels using javascript?

Rupesh
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    Possible dublicate http://stackoverflow.com/questions/623172/how-to-get-image-size-height-width-using-javascript – dotoree Mar 03 '12 at 10:56

2 Answers2

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One way to get the image sizes in javascript is to do the following:

var img = document.getElementById('yourimageId'); 

var width = img.clientWidth;
var height = img.clientHeight;

Also have a look at the following answer to a similar previous question:

Community
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skub
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in firefox ,you can get the file's path by this method:

https://developer.mozilla.org/en/DOM/File.getAsDataURL

or latest version ： 

window.URL.createObjectURL(file);

for webkit window.webkitURL.createObjectURL() see https://developer.mozilla.org/en/Document_Object_Model_(DOM)/window.URL.createObjectURL

and set it to a img tag and get the size.
for ie, you shoule set a filter to the elem

progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=image)

and set the url to this filter then you can get the img's size good luck

Torrent Lee
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