方法一：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<!-- 珠峰海拔8848米，现在有足够大的纸，厚度是0.01米，折多少次高度可以超过珠穆朗玛峰 -->
<script>
var n = 0;
for (var i = 0.01; i < 8848; i *= 2) {
n++;
}
console.log(n);
</script>
</body>
</html>
方法二：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<!-- 6.珠峰海拔8848米，现在有足够大的纸，厚度是0.01米，折多少次高度可以超过珠穆朗玛峰 -->
<script>
var n = 0;
var i = 0.01;
while (true) {
i *= 2;
n++;
if (i > 8848) {
console.log(n);
break;
}
}
</script>
</body>
</html>
