Check if first character of string is digit or whitespace with regex or alternative

Question

I want to check if a given string's first character is a word character/not a digit or white-space and return a boolean.

I'm trying to use regex for this. What I have is:

function isFirstIndexCharacter(str){

   var regex = RegExp('w')
   return regex.test(str[0]);
}

I always get false no matter what my input is. Thanks for any help on this.

That's just checking that the character `w` is present. For a word character use`^\w` and for a word character (without digit) use `^[^\W\d]`. You should note that `\w` also includes `_` so if that's not what you're looking for, use `^[a-zA-Z]` — ctwheels, Oct 23 '19 at 19:59
check [this](https://stackoverflow.com/questions/1496826/check-if-a-single-character-is-a-whitespace). It doesn't include numbers, but numbers is the easy part... — Leonardo Alves Machado, Oct 23 '19 at 20:01

Arik · Answer 1 · 2019-10-23T20:05:52.487

2

You can do something like this -

function isFirstIndexCharacter(str){
  return /^\w/.test(str[0]);
}

edited Oct 23 '19 at 20:05

answered Oct 23 '19 at 20:00

Arik

1 Answers1