Realization effect:
Code:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script>
function getRandom(min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
}
var random = getRandom(1, 50);
var flag = 0;
while (true) {
var num = prompt('请猜一个1-50的数字：');
if (num > random) {
flag++;
alert('太大了！你还有' + (5 - flag) + '次机会');
} else if (num < random) {
flag++;
alert('太小了！你还有' + (5 - flag) + '次机会');
} else {
alert('恭喜你，猜对了！数字是' + random);
break;
}
if (flag == 5) {
alert('太菜了！机会用完了！正确数字是' + random);
break;
}
}
</script>
</head>
<body>
</body>
</html>