Reputation: 10476
I'm currently using the following regex to validate currency in my html input form fields:
/[1-9]\d*(?:\.\d{0,2})?/
Howevever, it is allowing the following value through: 13000.234.12
This is not a valid value. Here are valid values that I want to allow through:
VALID
125
1.25
1000.15
700.1
80.45
0.25
INVALID
130.1.4
21.......14
It feels like there should be a standard regex pattern out there for this, thoughts?
Side note: I'm preventing alphanumeric characters and dollar signs via the event key listener, so they already will not be able to be entered, which should make this problem a little easier.
Upvotes: 4
Views: 12177
Reputation: 31
I used the comma for decimal separator. Here my friends:
^([0]?(,\d{1,2})?|([1-9]{1,3})?((\.\d{3})*|([1-9])*)?(,\d{1,2})?)?$
Upvotes: 1
Reputation: 5062
/^(\d*?)(\.\d{1,2})?$/
So it's (Start) (Any amount of numbers only, even zero), (. and then numbers only, one or two, doesn't HAVE to be there though) End
Upvotes: 1
Reputation: 298582
Something like this should work:
^(\d*\.\d{1,2}|\d+)$
It matches:
1.00
1
0.23
0.2
.2
It doesn't match:
.
1.1.
Upvotes: 12