Question

How can I modify the following so that it keeps the character ‘.’?

This my regular expression:

a.replace(/[^\d]/g,'');

I am learning them, and I can see that it will keep the numbers from 0 to 9 only. Which is correct for my needs, however sometimes I need to pass a number such as 1.44 and this will just erase the ‘.’.

Thanks!

Answer 1

[^\d] is a character class that means anything except (^) digits (\d). You want it to remove anything except digits and periods, so just add the . to the character class:

a.replace(/[^\d.]/g,'');