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61 changes: 21 additions & 40 deletions src/GuessControl.js
Original file line number Diff line number Diff line change
@@ -1,47 +1,28 @@
import React, { Component } from "react";
import React, { useState } from "react";
import Button from "./Button";

class GuessControl extends Component {
constructor(props) {
super(props);
const GuessControl = ({ onGuess }) => {
const [currentGuess, setCurrentGuess] = useState("");

this.state = {
currentGuess: "",
};
const handleInputChange = (event) => {
setCurrentGuess(event.target.value);
};

/**
* These lines are required to make the methods/functions declared on this
* class have the correct `this` object when they run.
*/
this.handleInputChange = this.handleInputChange.bind(this);
this.onSubmitGuess = this.onSubmitGuess.bind(this);
}
const onSubmitGuess = () => {
// Since the values from an HTML input are strings by default,
// convert to a number for the returned guess value
// by passing in the string to the Number function.
// See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number
onGuess(Number(currentGuess));
setCurrentGuess("");
};

handleInputChange(event) {
this.setState({ currentGuess: event.target.value });
}

onSubmitGuess() {
// Since the values from an HTML input are strings by default,
// convert to a number for the returned guess value
// by passing in the string to the Number function.
// See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number
this.props.onGuess(Number(this.state.currentGuess));
this.setState({ currentGuess: "" });
}

render() {
return (
<div>
<input
type="number"
value={this.state.currentGuess}
onChange={this.handleInputChange}
/>
<Button onClick={this.onSubmitGuess}>Submit Guess</Button>
</div>
);
}
}
return (
<div>
<input type="number" value={currentGuess} onChange={handleInputChange} />
<Button onClick={onSubmitGuess}>Submit Guess</Button>
</div>
);
};

export default GuessControl;
102 changes: 40 additions & 62 deletions src/NumberGuessingGame.js
Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
import React, { Component } from "react";
import React, { useState } from "react";
import GuessControl from "./GuessControl";
import GuessMessage from "./GuessMessage";
import GameOver from "./GameOver";
Expand All @@ -8,70 +8,48 @@ import GameOver from "./GameOver";
* Returns a random integer number from 1-100 inclusive
*/
function getRandomNumber() {
return Math.floor(Math.random() * 100) + 1;
return Math.floor(Math.random() * 100) + 1;
}

const MAX_ATTEMPTS = 5;

class NumberGuessingGame extends Component {
constructor(props) {
super(props);

this.state = {
numberToGuess: getRandomNumber(),
numberOfGuesses: 0,
latestGuess: null,
};

/**
* These lines are required to make the methods/functions declared on this
* class have the correct `this` object when they run.
*/
this.handleGuess = this.handleGuess.bind(this);
this.handleReset = this.handleReset.bind(this);
}

handleGuess(guess) {
this.setState({
latestGuess: guess,
numberOfGuesses: this.state.numberOfGuesses + 1,
});
}

handleReset() {
this.setState({
numberToGuess: getRandomNumber(),
numberOfGuesses: 0,
latestGuess: null,
});
}

render() {
const isCorrectGuess = this.state.latestGuess === this.state.numberToGuess;

const isGameOver =
isCorrectGuess || this.state.numberOfGuesses === MAX_ATTEMPTS;

return (
<div>
<h2>I'm thinking of a number from 1 to 100.</h2>
<h2>
Can you guess the number I am thinking of in {MAX_ATTEMPTS} tries?
</h2>
<GuessControl onGuess={this.handleGuess} />
{isGameOver && (
<GameOver hasWon={isCorrectGuess} onReset={this.handleReset} />
)}
{!isGameOver && (
<GuessMessage
guess={this.state.latestGuess}
numberToGuess={this.state.numberToGuess}
numberOfGuesses={this.state.numberOfGuesses}
/>
)}
</div>
);
}
}
const NumberGuessingGame = () => {
const [numberToGuess, setNumberToGuess] = useState(getRandomNumber());
const [numberOfGuesses, setNumberOfGuesses] = useState(0);
const [latestGuess, setLatestGuess] = useState(null);

const handleGuess = (guess) => {
setLatestGuess(Number(guess));
setNumberOfGuesses((prevGuesses) => prevGuesses + 1);
};

const handleReset = () => {
setNumberToGuess(getRandomNumber());
setNumberOfGuesses(0);
setLatestGuess(null);
};

const isCorrectGuess = latestGuess === numberToGuess;

const isGameOver = isCorrectGuess || numberOfGuesses === MAX_ATTEMPTS;

return (
<div>
<h2>I'm thinking of a number from 1 to 100.</h2>
<h2>
Can you guess the number I am thinking of in {MAX_ATTEMPTS} tries?
</h2>
<GuessControl onGuess={handleGuess} />
{isGameOver && <GameOver hasWon={isCorrectGuess} onReset={handleReset} />}
{!isGameOver && (
<GuessMessage
guess={latestGuess}
numberToGuess={numberToGuess}
numberOfGuesses={numberOfGuesses}
/>
)}
</div>
);
};

export default NumberGuessingGame;