Regex to check if whitespace present?

Question

Seems pretty simple, but cannot figure out why this javascript code isn\'t working returning false, when expecting true) - I\'m guessing it has got to do something with the esca

Answer 1

You need to escape the backslash if you are creating your RegExp object from a string literal:

var inValid = new RegExp("[\\s]");

Alternatively you can just use the following:

var inValid = /\s/;

This uses a regular expression literal so the escaping of the backslash is not necessary, and there is no need for the character class here so I dropped the square brackets as well.