Hello I am trying to implement automated test scripts using NewRelic. I am engineering javascript such that I print the last character of a field on the page that is always 8 characters. I have this:

var last_character=page_value.charAt(8);
console.log('test last_character='+last_character)

but it only prints 'test last_character='! Is this a javascript variable scoping issue? I have never understood that!

  • 1
    There is a discrepancy between your nick (user name) and your skill level :-) Apr 25, 2017 at 19:51
  • This is a really basic question: javascript starts counting the index at 0 not 1. So you need charAt(7)
    – Kate Paulk
    Apr 26, 2017 at 11:24

1 Answer 1


I think you want to use .charAt(7) since js starts indexing at position 0.

  • Thank you! This was the problem. I wish javascript gave an error rather than an un-usable value!
    – SrGuy
    Apr 25, 2017 at 19:54
  • @SrGuy Since you know it's an 8 character string, you can do this. You may want to do str.charAt(str.length - 1) in the future in case the string changes on you.
    – corsiKa
    Apr 25, 2017 at 21:40
  • string.slice(-1) is a better approach, since it is cross-browser. Apr 26, 2017 at 12:39

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