hey-dominos2.js

function say(a) {
    cleanUp = function(str) {
        return str.replace(/[^a-zA-Z0-9]+/, "");
    }

    addDashes = function(str) {
        return cleanUp(str).split("").join("-");
    }

    return function(b) {
        return addDashes(a) + " " + addDashes(b);
    }
}

console.log( say("Domino's")("Pizza") === "D-o-m-i-n-o-s P-i-z-z-a" );
console.log( say("Front")("End!") === "F-r-o-n-t E-n-d" );