Please help with Codewars error!

JavaScript
1

(Training on String ends with? | Codewars)

Problem:
Complete the solution so that it returns true if the first argument(string) passed in ends with the 2nd argument (also a string).

Examples:

solution('abc', 'bc') // returns true
solution('abc', 'd') // returns false

Solution: 
function solution(str, ending) {
  const splitStr = str.split("");
  const lastItem = splitStr[splitStr.length - 1];
  if (lastItem == ending) {
    return true
  } else {
    return false
  }
}

Sample test:
describe("Tests", () => {
  it("test", () => {
Test.assertEquals(solution('abcde', 'cde'), true)
Test.assertEquals(solution('abcde', 'abc'), false)
});
});

Hello everyone, I was wondering if someone could help me figure out this Codewars issue I am having. I have attached an image with the problem at hand. I have tested the function on a separate IDE and the function does find the last letter and test to see if it true or false. However when I try to use my function on the codewars it flags the error “expected false to equal true”. What does this error mean in this case?

2

Please post code and links instead of pictures. It is very hard to debug pictures.

3

Fixed it, sorry for that.

4

I’m not sure your code is doing what the challenge is asking for. Try adding a console.log for lastItem before the if statement. If the second arg is more than one character then I think you have a problem.

1 Like
5

Hi @davidflores11724 !

This codewars challenge is the exact same one as this FCC challenge.

I don’t think there is a need to use the split method.

I would hop on MDN docs and poke around and see if you can find a handy method to do what the challenge is asking from you.

1 Like
6

Hi @davidflores11724

I tried the challenge now and this is my code, I have kept comments to explain my thought process. If you don’t understand, I am happy to provide more clarification.

function confirmEnding(str, target) {
  // length of the string
  const lenStr = str.length;
  // length of the target
  const lenTarget = target.length;
  // if you pass a single arguement to the string.substring method,
  // it'll return the substring starting from the position you passed
  // so here, I tell it to return the substring starting from the string's
  // length - the target's length. 
  const strSubString = str.substring(lenStr - lenTarget)
// check if the returned substring is equal to the target
  return strSubString === target;
}
1 Like
7

Hi @codekagei !

Welcome to the forum!

I added spoiler tags around your code so it is not to spoiler the answer for those who have not worked on this FCC challenge yet.

But also, it will be a better educational experience if you help guide the user through hints instead of providing them with the full answer with comments in the code.

Thanks!

8

Hi @jwilkins.oboe thank you!

My apologies, I just joined and I didn’t take note of that. Thank you again and I’d take note of your suggestion.

1 Like
9

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