getting width and Height of an Image Before uploading

[dasrasmikant]

Dear Experts,
I am falling in a trouble and need your help for solving it

I want to get the width and heignt of an image before uploading it. Below is my code

<script language="javas cript">
[CODE=javascript]function showImage(i)
{
x=new Image;
x.src=i;

iw=x.width;
ih=x.height;
alert("Image width is: "+iw+" pixels, and image height is: "+ih+" pixels.");

}
[/CODE]
</script>

[dasrasmikant]

getting width and Height of an Image Before uploading

Dear Experts,
I am falling in a trouble and need your help for solving it

I want to get the width and heignt of an image before uploading it. Below is my code

<script language="javascript">
function showImage(i)
{
	x=new Image;
	x.src=i;	
               iw=x.width;
               ih=x.height;
             alert("Image width is: "+iw+" pixels, and image height is: "+ih+" pixels.");
}
</script>

In HTML Part
[HTML]<input name="fileImage " type="file" size="25" onchange="showI mage(this.value )" />[/HTML]

But when ever I am uploading any image its showing 0 pixels for both width and height.

Pls..
Thanks in advence.

[hsriat]

You can't do that before you upload it.

JS doesn't have access on the local files, so it can't do that. You can't even provide any local image as value to src of an image (img).

But you can upload the image with Ajax, and return the height and width back to the client after processing the image at server side.

[dasrasmikant]

so how can I do it. Is it possible by any server side scripting language

[hsriat]

Do NOT double post...

[hsriat]

so how can I do it. Is it possible by any server side scripting language

Yes its possible in server side scripting. You may ask that in the forum dedicated for the language you are using.

[dasrasmikant]

Yes its possible in server side scripting. You may ask that in the forum dedicated for the language you are using.

Ok thanks.
I will be post it an ASP section.

[acoder]

Please do not double post. Threads merged.

Also remember to use [code] tags when posting code.

Moderator.