How do I catch an exception in intern JS?

Question

I have the following snippet

,clickStaleElement: function(remote, id) {
  return remote
    .findById(id)
      .execute(function(id){
        //force org.openqa.selenium.StaleElementReferenceException
        $(document.getElementById(id)).addClass('hidden');
      },[id])
      .click()
      .catch(function(){
        return this.parent
          .findById(id)
            .execute(function(id){
              //bring back the element
              $(document.getElementById(id)).removeClass('hidden');
            },[id])
            .click()
          .end()
        ;
      })
    .end()
  ;
}

which is supposed to handle StaleElementReferenceException, or any other for that matter, and try to find the element again and click on it. The element is added and removed to/from the dom on a fixed interval and therefore sometimes i get this exception in my test run and therefore a failed run. I want to handle this exception and prevent the run from failing as is not really failing due to a bug (or is it?).

So the question is How do I handle an exception on the .click() method?

Answer 1

In your callback, try using remote instead of this.parent. this.parent uses the same context element as the parent chain. This means that if you ended up in the catch because you tried to click a stale element, calling this.parent.findById(id) in the catch will be performing a search rooted on that stale element.