return the first non repeating character in a string in javascript

Question

So I tried looking for this in the search but the closest I could come is a similar answer in several different languages, I would like to use Javascript to do it.

T

Answer 1

First of all, start your loop at 1, not 0. There is no point in checking the first character to see if its repeating, obviously it can't be.

Now, within your loop, you have someString[i] and someString[i - 1]. They are the current and previous characters.

if someString[i] === someString[i - 1] then the characters are repeating, if someString[i] !== someString[i - 1] then they are not repeating, so you return someString[i]

I won't write the whole thing out for you, but hopefully the thought process behind this will help