jquery - Get image size when it loads from an extern URL in Javascript - Stack Overflow

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I need to know the image size when it loads from an extern URL because the project needs to resize the image div.

I need to do something like this:

<img id="imglegend'+layername+'" src="url_to_an_extern_host" />

And, using Javascript and JQuery:

$('#imglegend'+layername).ready(function(){
   var h = $('#imglegend'+layername);
   // Resize image div container
});

But this didn't work. Is it possible to do?

Thanks in advance!

I need to know the image size when it loads from an extern URL because the project needs to resize the image div.

I need to do something like this:

<img id="imglegend'+layername+'" src="url_to_an_extern_host" />

And, using Javascript and JQuery:

$('#imglegend'+layername).ready(function(){
   var h = $('#imglegend'+layername);
   // Resize image div container
});

But this didn't work. Is it possible to do?

Thanks in advance!

• javascript
• jquery
• image
• size

Share Improve this question Follow asked Jan 17, 2011 at 13:07 Fran VeronaFran Verona 5,47666 gold badges4848 silver badges8787 bronze badges 2

• 2 That should be handled by styling not programmatically. <img> by default resizes to image size so your other formatting is not correct. – Aliostad Commented Jan 17, 2011 at 13:13
• But this project loads images dinamically, and I need to know image size dinamically too. Thanks Aliostad! – Fran Verona Commented Jan 17, 2011 at 13:26

Add a ment  | 

2 Answers 2

Sorted by: Reset to default 5

$('#imglegend').load(function(){
   var w =    $(this).width();
   var h =    $(this).height();
   alert(w); alert(h);
}).error(function (){
   $(this).remove();//remove image if it fails to load// or what ever u want
})

Images don't have a ready event. They do however have a load event:

$('#imglegend'+layername).load(function(){
   alert(this.width);
});

EDIT: BTW, you need to make sure that the image isn't loaded before you attach the event handler. You'll wither need to assign the src in your script after assigning the handler instead of in your HTML, or assign the handler in the onload HTML instead.

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