Question

在本课程中，最后有一个带有练习课程的外部链接。我正在进行最后的练习，我无法弄清楚为什么我的代码不起作用。这是提示：

一个Snarky机器人

编写代码，询问用户他们最喜欢的数字然后是什么   根据以下指南做出回应：

如果数字是42，那么回答应该是“耶！那是我的最爱   “如果这个数字小于42，那么响应应该是：”呃，   没关系，但X会更好“对于这个应答X应该是   他们猜到的数字+ 1如果数字高于42则   回应应该是：“LAME。这个数字太大了！“

这是我的代码：

let number = prompt('what is your favorite number');
let x = number++;

if (number = 42) {
  response = "Yay! That's my favorite too!";
} else if (number < 42) {
  response = "Eh, that's OK but " + x + " would be even better";
} else {
  "LAME. That number is too large!";
}

console.log(response);

我尝试了一些不同的东西，但第二次测试（提示响应“15”）仍然失败。它以第一个选项而不是第二个选项响应。我做错了什么？

Answer 1

下面：

let number = prompt("what is your favorite number");
let x = number++; // this will store original response in x and increment number by 1.

if (x == 42) {//use x to check conditions
    response = "Yay! That's my favorite too!";
} else if (x < 42) {
    response = "Eh, that's OK but " + number + " would be even better";// use number to set response
} else {
    ("LAME. That number is too large!");
}
console.log(response);

Answer 2

所以似乎有几件事导致错误。此代码解决了错误并传递了每个测试输出：

let number = Number(prompt('what is your favorite number'));
let x = number + 1;

if (number == 42) {
  response = "Yay! That's my favorite too!";
} else if (number < 42) {
  response = "Eh, that's OK but " + x + " would be even better";
} else {
  response = "LAME. That number is too large!";
}

console.log(response);

感谢大家的帮助

Answer 3

首先，这是一项任务而非比较

if (number = 42) {

应该是：

if (number == 42) {

此外，您必须定义＆＃34;响应＆＃34;在if块之外，否则在某些情况下它将是未定义的。

Project Odin - Web Dev 101 - 基础知识第2部分 - Snarky Robot

3 个答案: