Question

I wrote this to validate images. Basically it pulls the image on Id and sets the attribute to a url. It relies on the onerror function to determine if the url is a valid image and if not resets the src attribute to a generic location. Will this work? It is based off of two other SO posts….embedded javascript and validation simplification.

// a is the url that is checked

function validate_fav(a)
  {
  var img=document.getElementById('theimg');
  document.getElementById('theimg').setAttribute('src', a);    
  img.onerror=function()
    {    
    a=d+'/favicon.ico';
    document.getElementById('theimg').setAttribute('src', a);
    }
  }

Answer 1

Found this link, wish I would have found this an hour ago

<img src="image.gif" onerror="src_to_generic()" />

at

w3 schools

Just call a function on the onerror that resets the src to a generic image.