ReactJs.Net
Install react package manager npm
create new react project
npx create-react-app my-app
debugging
cd my-appnpm start
deploy react
cd my-appnpm run build
host react on local server
npm install -g serveserve -s build
babel
https://marketplace.visualstudio.com/items?itemName=joshpeng.sublime-babel-vscodereact developer tools for chrome
https://chrome.google.com/webstore/detail/react-developer-tools/fmkadmapgofadopljbjfkapdkoienihi/related<style>
my_ol, my_ul {
padding-left: 30px;
}
.my_board-row:after {
clear: both;
content: "";
display: table;
}
.my_status {
margin-bottom: 10px;
}
.my_square {
background: #fff;
border: 1px solid #999;
float: left;
font-size: 24px;
font-weight: bold;
line-height: 34px;
height: 34px;
margin-right: -1px;
margin-top: -1px;
padding: 0;
text-align: center;
width: 34px;
}
.my_square:focus {
outline: none;
}
.kbd-navigation .my_square:focus {
background: #ddd;
}
.my_game {
display: flex;
flex-direction: row;
}
.my_game-info {
margin-left: 20px;
}
</style>
<head>
<title>react</title>
<script src="https://unpkg.com/react@16/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
<script src="https://unpkg.com/babel-standalone@6.15.0/babel.min.js"></script>
</head>
<body>
<div id="root"></div>
<script type="text/babel">
function Square(props) {
return (
<button className="my_square" onClick={props.onClick}>
{props.value}
</button>
);
}
class Board extends React.Component {
renderSquare(i) {
return (
<Square
value={this.props.squares[i]}
onClick={() => this.props.onClick(i)}
/>
);
}
render() {
return (
<div>
<div className="my_board-row">
{this.renderSquare(0)}
{this.renderSquare(1)}
{this.renderSquare(2)}
</div>
<div className="my_board-row">
{this.renderSquare(3)}
{this.renderSquare(4)}
{this.renderSquare(5)}
</div>
<div className="my_board-row">
{this.renderSquare(6)}
{this.renderSquare(7)}
{this.renderSquare(8)}
</div>
</div>
);
}
}
class Game extends React.Component {
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="my_game">
<div className="my_game-board">
<Board
squares={current.squares}
onClick={(i) => this.handleClick(i)}
/>
</div>
<div className="my_game-info">
<div>{status}</div>
<ol>{moves}</ol>
</div>
</div>
);
}
}
// ========================================
ReactDOM.render(
<Game />,
document.getElementById('root')
);
function calculateWinner(squares) {
const lines = [
[0, 1, 2],
[3, 4, 5],
[6, 7, 8],
[0, 3, 6],
[1, 4, 7],
[2, 5, 8],
[0, 4, 8],
[2, 4, 6],
];
for (let i = 0; i < lines.length; i++) {
const [a, b, c] = lines[i];
if (squares[a] && squares[a] === squares[b] && squares[a] === squares[c]) {
return squares[a];
}
}
return null;
}
</script>
</body>
reference:
https://react-cn.github.io/react/downloads.html
https://html5hive.org/react-tutorial/
https://reactjs.org/docs/react-api.html
https://reactjs.org/docs/add-react-to-a-new-app.html
https://www.npmjs.com/get-npm
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