I'm trying to use regex to specify amount of characters. The curly brackets are not working

Question

var validRegExp = /^[0-9]+[-]+[0-9]+$/;

This is my script, and what I want is:

var validRegExp = /^[0-9]{5}+[-]+[0-9]{2}+$/;

But when I put this in it doesn't like it.

I want 5 numbers, followed by a dash, followed by two numbers

Answer 1

When you write :

[0-9]{5}+

It's no correct because you can translate it as a numerical 5 times, 1 or more. As you already write 5 times the + shouldn't be used.

The correct regex would be :

/^[0-9]{5}(-)+[0-9]{2}$/;