function generateOneNumber() {

if (nospace(board))

return false;

// 隨機一個位置

var randx = parseInt(Math.floor(Math.random() * 4));

var randy = parseInt(Math.floor(Math.random() * 4));

while (true) {

if (board[randx][randy] == 0)

break;

randx = parseInt(Math.floor(Math.random() * 4));

randy = parseInt(Math.floor(Math.random() * 4));

}

// 隨機一個數(shù)字

var randNumber = Math.random() < 0.5 ? 2 : 4;

// 在隨機的位置顯示隨機數(shù)字

board[randx][randy] = randNumber;

showNumberWithAnimation(randx, randy, randNumber);

return true;

}