Retrieves a list of all possible DOM events and populates an array. Works in IE9+, Chrome, Safari & Firefox.

getAllDOMEvents.js

Object
    .getOwnPropertyNames( document )
    .concat( 
        Object.getOwnPropertyNames(
            Object.getPrototypeOf(
                Object.getPrototypeOf( document )
            )
        )
    )
    .concat( 
        Object.getOwnPropertyNames(
            Object.getPrototypeOf( window )
        )
    )
    .filter( function( i ) {
        return ! i.indexOf( 'on' ) && ( document[i] == null || typeof document[i] == 'function' );
    })
    .filter( function( elem, pos, self ) {
        return self.indexOf( elem ) == pos;
    });