Question

There is a field in my web application into which the user is expected to enter one or more digits separated by one or more periods.

The following is a typical example of what the user may enter:

589327498321.43243214.32421423.

I’ve written the following JavaScript code to test value:

var uid = $(this).val();
var uidRegex = /(^\d|\.$)+/;
var isValid = uidRegex.test(uid);

I’m getting the wrong result. It seems that this code tells me that the entry is valid if the user’s entry begins with a digit or period. How can I fix this so that the entire entry must consist exclusively of digits and periods to be valid?

Answer 1

It sounds like the pattern you’re looking for is

Number followed by any number dot + number sequences

If so try the following /^(\d)+(\d|\.\d)+$/

EDIT

OP indicated in comments that consecutive dots are legal. Here’s the updated regex to account for that as well /^(\d)+(\d|\.)+$/