trigger/fire an attachEvent

[mgh730]

I have an object with an event attached to it. Is there a way to trigger this event through JavaScript?

Here is an extremely simplified version of the scenario:

obj = document.createElement("select");
obj.appendChild(document.createElement("option"));
obj.appendChild(document.createElement("option"));
obj.attachEvent("onchange", function () { alert("test"); } );
document.body.appendChild(obj);

//this line should trigger the alert in the onchange event
obj.selectedIndex = 1;

When the user changes the select box above, the event fires. When JavaScript changes the selectedIndex, the event does not fire. Can I add something to the JavaScript to trigger the event? I cannot change the function inside the attachEvent line, and I cannot make the object static (like <select onchange="...code..."> )... the attachEvent code/function is part of a huge js file written by someone else.

 

[BillyRayPreachersSon]

Check out the fireEvent method:

http://msdn.microsoft.com/library/d.../author/dhtml/reference/methods/fireevent.asp

Hope this helps,
Dan

 

[BillyRayPreachersSon]

Incindentally, with IE, there is no need to use a big JS library for attachEvent - it has been available to most object types since IE5.5.

You might be able to slim your code down considerably by removing this library if it is now redundant.

Dan

 

[mgh730]

Thanks! I had looked around the msdn library, but I guess I wasn't looking in the right places.

The JS file I'm using doesn't revolve around attachEvent - it creates a series of objects that get events attached to them. I'm controlling those objects through JS - and thus I needed control over their events.