The last field is the "color" of the move, which is an integer that indicates X or o.

最后一个字段是步着的“颜色”，它是一个值为X或O的整数。

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The onClick handler sets the current color of the board based on whether the user clicks the X or o button.

onClick处理程序根据用户点击的是X还是o按钮设置面板的当前颜色。

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These two buttons are the X and o buttons that the user USES to specify which color he or she is playing.

这两个按钮就是用户用于指定玩游戏时所用颜色的x和o按钮。

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