At the moment I have the following $scope.user.username.replace(/[\s]/g, '');

This removes and special characters and spaces, I need to add in the ability to prevent numbers and special characters too but I can't quite grasp how Regex works.

Would someone be able to help me out?

At the moment I have the following $scope.user.username.replace(/[\s]/g, '');

This removes and special characters and spaces, I need to add in the ability to prevent numbers and special characters too but I can't quite grasp how Regex works.

Would someone be able to help me out?

• javascript
• regex

• Actually your regex remove only white spaces. – Toto Commented Sep 26, 2014 at 11:35

2 Answers 2

You should just be able to use not in the matching group and remove everything that isn't a letter:

/[^a-zA-Z]/g

DEMO

Just add the characters you want to remove in the character class:

replace(/[\s.;,?%0-9]/, '')