doneOrNot.js

function doneOrNot(board){

    // var boardForRegBuilder = [];
    // boardForRegBuilder = deepCopy(board);

    // console.log("boardForRegBuilder is " + boardForRegBuilder);
    // function deepCopy(obj) {
    //     if (Object.prototype.toString.call(obj) === '[object Array]') {
    //         var out = [], i = 0, len = obj.length;
    //         for ( ; i < len; i++ ) {
    //             out[i] = arguments.callee(obj[i]);
    //         }
    //         return out;
    //     }
    //     if (typeof obj === 'object') {
    //         var out = {}, i;
    //         for ( i in obj ) {
    //             out[i] = arguments.callee(obj[i]);
    //         }
    //         return out;
    //     }
    //     return obj;
    // }

    function isValidBoard(newBoard) {
        console.log(newBoard);
        if (newBoard.length == 9) {
            console.log("newBoard has 9 arrays");
            for (i = 0; i < 9; i++ ) {
                if (newBoard[i].length == 9) {
                    continue;
                } else {
                    console.log("A subarray of newBoard didn't have 9 elements at subarray " + i);
                    //Board did not have the correct number of elements in sub-arrays.
                    return false;
                }
            }
            //Board has passed the for-loop checking number of elements in sub-arrays.
            return true;

        } else {
            //Board did not have the correct number of arrays (elements) in parent array.
            console.log("board did not haev the correct number of arrays (elements) in parent array." + newBoard.length);
            return false;
        }
    }

    //Rows and columns are checked for containing 1,...9.
    function isBoardCorrect(validBoard) {
        for (xCoord = 0; xCoord < 9; xCoord++) {
            for (numIter = 1; numIter < 10; numIter++ ) {
                if (validBoard[xCoord].indexOf(numIter) >= 0) {
                    continue;
                } else {
                    console.log("Board found incorrect during row check. With numIter being " + numIter + " and xCoord being " + xCoord);
                    return false;
                }
            }
        }

        for (yCoord = 0; yCoord < 9; yCoord++) {
            var yAcc = [];
            for (row = 0; row < 9; row++) {
                yAcc.push(validBoard[row][yCoord]);
            }

            for (numIter2 = 1; numIter2 < 10; numIter2++ ) {
                if (yAcc.indexOf(numIter2) >= 0) {
                    continue;
                } else {
                    console.log("Board found incorrect during column check at column " + (yCoord+1));
                    console.log("yAcc var yeilds " + yAcc);
                    return false;
                }
            }
            //Clear Y-Coordinate accumulator for next column accumulation.
            yAcc = [];
        }
        return true;
    }

    //New array is built containing subarrays populated with 3x3 regions.
    function regionBuilder(validBoard) {
        var regParentArr = [];
        var regChildArr = [];

        while (validBoard.length > 1) {
            for (regX = 0; regX < 3; regX++) {
                for (regY = 0; regY < 3; regY++) {
                regChildArr.push(validBoard[regX][regY]);
                if (regY == 2) {
                    validBoard[regX].splice(0,3);
                } 
                }
                if (regX == 2) {
                    regParentArr.push(regChildArr);
                    regChildArr = [];
                    
                    if (validBoard[2].length < 1) {
                        validBoard.splice(0,3);
                    }
                }
            }
        }
        return regParentArr;
    }

    //Checking arrays populated with region numbers for containing 1,...9.
    function isRegionCorrect(regArrays) {
        console.log(regArrays)
        for (k = 0; k < 9; k++) {
            for (l = 1; l < 10; l++) {
                if (regArrays[k].indexOf(l) >= 0) {
                    continue;
                } else {
                    console.log("One of the regions was not correct.");
                    return false;
                }
            }
        }
        return true;
    }

    //Main logic using above helper functions.
    if (isValidBoard(board) == true && isBoardCorrect(board) && isRegionCorrect(regionBuilder(board))) {
            console.log("Board found to be valid and correct!");
            console.log("Regions were found to be correct!");
            return "Finished!";
        } else {
            console.log("Board did not pass correct test.");
            return "Try again!";
        }
}

doneOrNot([ [ 1, 2, 3, 4, 5, 6, 7, 8, 9 ],
    [ 2, 3, 4, 5, 6, 7, 8, 9, 1 ],
    [ 3, 4, 5, 6, 7, 8, 9, 1, 2 ],
    [ 4, 5, 6, 7, 8, 9, 1, 2, 3 ],
    [ 5, 6, 7, 8, 9, 1, 2, 3, 4 ],
    [ 6, 7, 8, 9, 1, 2, 3, 4, 5 ],
    [ 7, 8, 9, 1, 2, 3, 4, 5, 6 ],
    [ 8, 9, 1, 2, 3, 4, 5, 6, 7 ],
    [ 9, 1, 2, 3, 4, 5, 6, 7, 8 ] ]);