You should also wrap your code into a namespace with IIFE to avoid global conflict and immediate execution.

i.e.

    (function (token, undefined) {
    	token.init = function () {
        	var self = this;
    	    //add event handler
    	    $('#friend').on('keyup', function (event) {
    	        //test data to make sure its usable
    	        self.testData( $(this) , event  );
    
    	    });
        };
    }(window.token = window.token || {}));