Challenge: Reverse a String

JavaScript
1

Hello fellow freecodecamp coders,
I tend to revisit my coding on the challenges of the javascript cv and sometimes I get ideas how to get things better. Now i know that there are many of you professionals, so I wanted to ask for your opinions on this.

The challenge: reverse a string

My code:

function reverseString(str) {
  return [...str].reverse().join('')
}

So what i have used here is the spread operator to split the letters in an array (please correct me if I am wrong) and then applied reverse and join to get the results of reversing a string. Now I have looked into the discussion of the hints and there is one similair solution that uses firstly str.split() and then reverse and join like I do.

My question:
Is it a good idea to use the spread operator […str] instead of str.split() ?

  • Would it make a difference while using large scale datas?

Thank you for your replies!

1 Like
2

I don’t see why not. It’s a convenient shortcut and I think most pros prefer to use shortcuts rather than spell it out.

But add a semi-colon at the end! I insist on that :slight_smile: I know it’s trendy nowadays not to use the semi-colon. And maybe for a one-liner like this it isn’t necessary. But when looking at a file of code that is hundreds of lines long I need those semi-colons baby.

You would have to do some testing to see. I’d be interested to know what you find.

1 Like
3

Thank you for your feedback and quick reply, it is much appreciated!

I was thinking the same way, to have the shortest solution, but I am glad to hear that from someone else.

You are absolutely right about the semicolon, normally I use them everywhere as because it is mentioned in the fcc aswell , but Ive forgot it this time. Will have to work on my debugging a bit more.

You would have to do some testing to see. I’d be interested to know what you find.

I dont have currently any specific examples, but I was thinking in a way if there would be any major differences in processed time on the script while using one method or the other. Will think of it, thank you

4

Ya, I’m an old guy and like to complain about change :slight_smile: Don’t take me too seriously about that.

5

hahaha well said. But I agree with you, there has to be order if you run thru thousands of lines of code

6

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