Execute multiple functions where one is expected. Useful for event handling.

multi.js

function multi(){
	var handlers = Array.prototype.filter.call( arguments, function( x ){
		return x instanceof Function 
	} )
	
	return function handle(){
		for( var i = 0; i < handlers.length; i++ )
			handlers[ i ].apply( this, arguments )
	}
}

ex:

m('button', {
  onclick: function(event) {
    onclick1(event)
    onclick2(event)
  }
}, 'label')