String manipulation with Javascript (NodeJS)

Question

I'm trying to remove the first 13 characters of a string with this code:

requestToken = requestToken.substring(13);

However, I'm getting "has no method substring" error with NodeJS, the code above that mostly recommended in the Javascript forums does not work with NodeJS?

Answer 1

it seems like requestToken may not be a string.

Try

requestToken = '' + requestToken;

and then requestToken.substring(13);