javascript - if 语句不返回 true

Question

我应该得到一个可以被 2 整除的数字，而我正在这样做。我不确定为什么我的代码不起作用。我在学习 javascript 的类(class)中​​这样做。我得到的错误是:

Oops, try again. Looks like your function returns false when number = 2. Check whether your code inside the if/else statement correctly returns true if the number it receives is even.

问题是这样的:

Write an if / else statement inside the isEven function. It should return true; if the number it receives is evenly divisible by 2. Otherwise (else), it should return false;. Make sure to return - don't use console.log()!

我的代码

var isEven = function(number) {
// Your code goes here!
  if(4 % 2) {
      return true;
  } else {
      return false;
  }
};

我做错了什么？

Answer 1

试试这个

var isEven = function(number) {
  if(number % 2 === 0) {
      return true;
  } else {
      return false;
  }
};

console.log(isEven(4));
console.log(isEven(3));
console.log(isEven(6));

一行更美

var isEven = function(number) {
  return number % 2 === 0;
};

console.log(isEven(4));
console.log(isEven(3));
console.log(isEven(6));