Question

I’m trying to time the load time of another domain from the client side using JavaScript. I know that you can do this by using the “src” attribute of “script” and “img” tags, but I’m not sure how to get a callback once the load is finished (or once it failed).

Most solutions I’ve seen for loading external content are server-side, but I’m trying to do this on the client side.

Answer 1

If you just want a callback when the call is done and not really need to read the server response, you can use the Onload OnAbort OnError events of the script or the img tag.

var i=new Image(1,1);
i.src = url;
i.onload = function(){
  alert('load complete')
}; 
i.onabort = function(){
  aletrt('aborted')
}