var myCells = [
        {XorO: "", value: 1},
        {XorO: "", value: 2},
        {XorO: "", value: 4},
        {XorO: "", value: 8},
        {XorO: "", value: 16},
        {XorO: "", value: 32},
        {XorO: "", value: 64},
        {XorO: "", value: 128},
        {XorO: "", value: 256},
    ];

    //When the user drops an X on cell 4 do this:
    myCells[5].XorO = "X"
    //When the user drops an O on cell 1 do this:
    myCells[0].XorO = "O"
    //to check if cell1 is set to X do this:
    if (myCells[0].XorO == "X") {
        //Cell1 is X!
    }