Can Javascript be used to detect a redirected image SRC (in any popular browser)?

Question

I\'m guessing nope, but you never know.

1. Browser loads
2. example.net redirects lolca

Answer 1

I checked with the following code:

var a=new Image(); a.src='http://example.com/image.png';
alert( a.width );

which in this case returns 0 since the image doesn't exist.

On link text I found quite a few properties that might be worth checking out. And if that fails you might want to look into jQuery and AJAX.

Edit:
_{tested on firefox firebug}

var a=new Image(); 
a.src='http://l.yimg.com/g/images/photo_unavailable_m.gif';
console.log(a.width); // the image exists and returns 240

var b=new Image(); 
b.src='http://farm3.static.flickr.com/2560/4098180849_729ef4f6ef_m.jpg';
console.log(b.width); // the image does not exist (re-direct) and returns 0