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checkguess.html
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checkguess.html
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<!DOCTYPE html>
<heml>
<head>
<meta charset="utf-8">
<title>猜数字游戏</title>
<style>
html {
font-family: sans_serif;
}
body {
width: 50%;
max-width: 800px;
min-width: 480px;
margin: 0 auto;
}
.lastResult {
color: white;
padding: 3px;
}
</style>
</head>
<body>
<h1>猜数字游戏</h1>
<p>我刚刚随机选定一个100以内自然数，看你能否在10次内猜中它，每次我会告诉你猜的是高了还是低了</p>
<div class="form">
<label for="guessField">请猜数</label>
<input type="text" id="guessField" class="guessField">
<input type="submit" value="确定" class="guessSubmit">
</div>
<div class="resultParas">
<p class="guesses"></p>
<p class="lastResult"></p>
<p class="lowOrHi"></p>
</div>
<script>
let num = Math.floor(Math.random() * 100 + 1);
const guesses = document.querySelector('.guesses');
const lastResult = document.querySelector(".lastResult");
const lowOrHi = document.querySelector(".lowOrHi");
const guessField = document.querySelector(".guessField");
const guessSubmit = document.querySelector(".guessSubmit");
let guessesCount = 1;
let resetButton;
function checkGuess() {
let userGuess = Number(guessField.value);
if (guessesCount === 1) {
guesses.textContent = '上次猜的数';
}
guesses.textContent += userGuess + ' ';
if (userGuess === num) {
lastResult.textContent = '恭喜你猜对了';
lastResult.style.background = 'green';
lowOrHi.textContent = '';
setGameOver();
} else {
lastResult.textContent = '你猜错了';
if (userGuess < num)
lowOrHi.textContent = '你猜低了！';
else if (userGuess > num)
lowOrHi.textContent = '你高了';
}
guessesCount++;
guessField.value = '';
guessField.focus();
if (guessField = 10)
setGameOver();
}
guessSubmit.addEventListener('click', checkGuess);
function setGameOver() {
guessField.disabled = true;
guessSubmit.disabled = true;
resetButton = document.createElement('button');
resetButton.textContent = '开始新游戏';
document.body.appendChild(resetButton);
resetButton.addEventListener('click', resetGame);
}
function resetGame() {
guessCount = 1;
const resetParas = document.querySelectorAll('.resultParas p');
for (let i = 0; i < resetParas.length; i++) {
resetParas[i].textContent = '';
}
resetButton.parentNode.removeChild(resetButton);
guessField.disabled = false;
guessSubmit.disabled = false;
guessField.value = '';
guessField.focus();
lastResult.style.backgroundColor = 'white';
num = Math.floor(Math.random() * 100) + 1;
}
</script>
</body>
</heml>