如何在JavaScript中将IF转换为SWITCH语句？

Question

我已经完成了一项任务，我已经解决了很多问题，但需要进行一些小的修正，我需要某人帮助指出我在哪里对我的代码进行一些修改：

这是任务：

将多条件if语句示例代码转换为switch示例代码。

var myAge = parseInt(prompt("Enter your age", 30), 10);

if (myAge >= 0 && myAge <= 10) {
  document.write("myAge is between 0 and 10<br />");
}

if (!(myAge >= 0 && myAge <= 10)) {
  document.write("myAge is NOT between 0 and 10<br />");
}

if (myAge >= 80 || myAge <= 10) {
  document.write("myAge is 80 or above OR 10 or below<br />");
}

if ((myAge >= 30 && myAge <= 39) || (myAge >= 80 && myAge <= 89)) {
  document.write("myAge is between 30 and 39 or myAge is " + "between 80 and 89");

}

<DOCTYPE html>

  <html lang="en">
  <head>
    <title>SOME CODE</title>
  </head>

  <body>
  </body>
  </html>

因此，30岁以下的违约结果是：

myAge不在0到10之间，myAge介于30到39之间，或myAge是

在80到89之间

这是我到目前为止所做的：

var myAge = parseInt(prompt("Enter your age", 30), 10); // Get the user's response, converted to a number
switch (true) { // Switch statement if the condition is True
  case myAge >= 0 && myAge <= 10: // Check the inputs value in range 0 - 10                     
    document.write("myAge is between 0 and 10<br/>");
    break;
  case (!(myAge >= 0 && myAge <= 10)): // Check the inputs value if it's not a in range between 0 - 10 ( !(myAge >= 0 && myAge <= 10) )
    document.write("myAge is NOT between 0 and 10<br/>");
    break;
  case myAge >= 80 || myAge <= 10: // Check the inputs value if it's greater/equal to 80 OR less/equal to 10
    document.write("myAge is 80 or above OR 10 or below<br/>");
    break;
  default:
    document.write("myAge is between 30 and 39 or myAge is " + "between 80 and 89"); // Check the inputs value in range 30 - 39 And 80 - 89 

}

<DOCTYPE html>

  <html lang="en">
  <head>
    <title>Chapter 3, Example 2</title>
  </head>
  <body>
  </body>
  </html>

而且，正如您所看到的，结果略有不同。我打印了这个：

myAge不在0到10之间

我知道解决方案很简单，但不幸的是我无法解决它，因此它会打印出一个：

myAge不在0到10之间，myAge介于30到39之间，或myAge是

同样。

拜托，有人，帮我解决一下，我真的很感激！