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class Board extends React.Component<any, any> { | |
renderSquare(i) { | |
return ( | |
<Square | |
value={this.props.squares[i]} | |
onClick={() => this.props.onClick(i)} | |
/> | |
); | |
} | |
render() { | |
return ( | |
<div> | |
<div className="status">{status}</div> | |
<div className="board-row"> | |
{this.renderSquare(0)} | |
{this.renderSquare(1)} | |
{this.renderSquare(2)} | |
</div> | |
<div className="board-row"> | |
{this.renderSquare(3)} | |
{this.renderSquare(4)} | |
{this.renderSquare(5)} | |
</div> | |
<div className="board-row"> | |
{this.renderSquare(6)} | |
{this.renderSquare(7)} | |
{this.renderSquare(8)} | |
</div> | |
</div> | |
); | |
} | |
} | |
class Game extends React.Component<any, any> { | |
constructor(props) { | |
super(props); | |
this.state = { | |
history: [ | |
{ | |
squares: Array(9).fill(null) | |
} | |
], | |
stepNumber: 0, | |
xIsNext: true | |
}; | |
} | |
handleClick(i) { | |
const history = this.state.history.slice(0, this.state.stepNumber + 1); | |
const current = history[history.length - 1]; | |
const squares = current.squares.slice(); | |
if (calculateWinner(squares) || squares[i]) { | |
return; | |
} | |
squares[i] = this.state.xIsNext ? "X" : "O"; | |
this.setState({ | |
history: history.concat([ | |
{ | |
squares: squares | |
} | |
]), | |
stepNumber: history.length, | |
xIsNext: !this.state.xIsNext | |
}); | |
} | |
jumpTo(step) { | |
this.setState({ | |
stepNumber: step, | |
xIsNext: step % 2 === 0 | |
}); | |
} | |
render() { | |
const history = this.state.history; | |
const current = history[this.state.stepNumber]; | |
const winner = calculateWinner(current.squares); | |
const moves = history.map((step, move) => { | |
const desc = move ? "Go to move #" + move : "Go to game start"; | |
return ( | |
<li key={move}> | |
<button onClick={() => this.jumpTo(move)}> | |
{desc} | |
</button> | |
</li> | |
); | |
}); | |
let status; | |
if (winner) { | |
status = "Winner: " + winner; | |
} else { | |
status = "Next player: " + (this.state.xIsNext ? "X" : "O"); | |
} | |
return ( | |
<div className="game"> | |
<div className="game-board"> | |
<Board squares={current.squares} onClick={i => this.handleClick(i)} /> | |
</div> | |
<div className="game-info"> | |
<div>{status}</div> | |
<ol>{moves}</ol> | |
</div> | |
</div> | |
); | |
} | |
} |
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