On Dec 10, 2013 1:32 AM, "Vivien Nicolas" <vnico...@mozilla.com> wrote:
>
>
>
> On 10/12/2013 10:21, Bob Thulfram wrote:
>>
>> On Monday, December 9, 2013 6:49:07 PM UTC-8, Bob Thulfram wrote:
>>
>> Also, I thought that onXXX wasn't supported, but it seems to work. I
prefer event handlers.
>>
>
> onxxx (or inline JS) is not supported for privileged/certified
application due to the CSP mechanism there to enforce a stricter security
against XSS.

onxxx works just fine as long as you set it to a JS function.

I.e. both of the following will work great

myElement.onclick = function(e) {
  console.log("You clicked");
}
function myLoadHandler() {
  ...
}
iframe.onload = myLoadHandler;

However the following will not work:
<img onload="doStuff()">
myElement.onmouseover = "counter++";

/ Jonas
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