Tic Tac Toe

index.html

<script>
"use strict";

this.TicTacToe=(function(){

    var Error=(function(){

        var errors=new Map([
                     ["error-not-found",new (function errorNotFound(){message:"error not found!"})]
                     ["value-input",new TypeError(["Invalid GridSquare value"])],
                     ["square-not-empty",new TypeError(["Square full"])]
        ]);

        return function(string){
            if (!errors.has(string)){
                throw errors.get('error-not-found');
            }
            return errors.get(string);
        }
    }());

    var GridSquare=(function(){

        function f(){
            this.value=" ";
        }

        f.prototype.fill=function(v){
           var lowerV;
           if (this.value!==" "){
               throw new Error('square-not-empty');
           }

           else if ((lowerV=v.toLowerCase())!=='x' && lowerV!=='o'){
               throw new Error('value-input');
           }
           else{
               this.value=lowerV;
           }
        }

        return f;
    }());

    var grid;

    var reset=function(){
        grid=[
               [new GridSquare,new GridSquare,new GridSquare],
               [new GridSquare,new GridSquare,new GridSquare],
               [new GridSquare,new GridSquare,new GridSquare],
       ];
    };

    var turn;

    var randomTurn=function(){
        if (Math.random()>.5) {turn="x";}
        else {turn='o';}
    }

    reset();
    randomTurn();

    return {
                newGame:function(){
                    reset();
                    randomTurn();
                    console.info(turn.toUpperCase()+"'s turn");
                },

            go:function(x,y){
                grid[x-1][y-1].fill(turn);
                this.print();
                if (turn='x') {turn='o';}
                else {turn='x';}
            },

            print:function(){
                console.log('['+grid[0][0].value+']['+grid[0][1].value+']['+grid[0][2].value+']');
                console.log('['+grid[1][0].value+']['+grid[1][1].value+']['+grid[1][2].value+']');
                console.log('['+grid[2][0].value+']['+grid[2][1].value+']['+grid[2][2].value+']');
                console.info(turn.toUpperCase()+"'s turn");
            },
            whosTurn:function(){console.info(turn.toUpperCase()+"'s turn");}
    };
}());

</script>