Event variable set even if not in parameters

Question

Given the following code:

openUserProfile: function(){
    event.preventDefault();

    // Rest of function
}

In Firefox, it throws ReferenceError: event is not defined as expected, because event is not passed in as a parameter. However in Chrome and Safari, event is defined and thus the code above runs fine.

Is there an explanation for this?

Answer 1

Go through this thread; window.event is not defined in FF

Javascript Error in FireFox Not in IE and Chrome

Instead try this:-

openUserProfile: function(e){
    e.preventDefault();

    // Rest of function
}