案例-猜数字游戏

文章目录

效果展示
- 初始画面
- 演示视频
代码区

效果展示

初始画面

在这里插入图片描述

演示视频

猜数字游戏

代码区

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>猜数字游戏</title><style>.false{color: red;}.true{color: green;}</style>
</head>
<body><div><input class="but" type="button" value="重新开始一局游戏" onclick="restart()"></div><div>请输入要猜的数字：<input class="num" type="text" value=""><input class="guess" type="button" value="猜"></div><div>以及猜的次数：<span class="already">0</span></div><!-- <div>结果：<span class="result">测试结果</span></div> --><div>结果：<span class="result"></span></div>
</body>
<script>let but = document.querySelector('.but')let num = document.querySelector('.num')let guess = document.querySelector('.guess')let already = document.querySelector('.already')let result = document.querySelector('.result')// ---------------------------------------------------------------------------------------// 控制台显示console.dir(but)console.dir(num)console.dir(guess)console.dir(already)console.dir(result)// ---------------------------------------------------------------------------------------// 随机生成1~100数字let guessNumber = Math.floor(Math.random() * 100) + 1console.log('随机数字是：'+guessNumber)// ---------------------------------------------------------------------------------------function restart(){num.value = 0already.textContent = 0result.innerHTML = ""guessNumber = Math.floor(Math.random() * 100) + 1console.log('随机数字是：'+guessNumber)}guess.onclick = function(){let numValue = parseInt(num.value)if(numValue > guessNumber){result.innerHTML = "猜大了"result.className = false;}else if (numValue < guessNumber) {result.innerHTML = "猜小了"result.className = 'false';} else {result.innerHTML = "恭喜！猜对了~"result.className = 'true';}already.textContent = parseInt(already.textContent) + 1}
</script>
</html>