Custom Currency validation - Magento using validate.js

Question

I am looking for a way to all for custom currency validation using native magento validate.js

I have a form which allows users to add custom prices to a text field. I am using the following classes to validate the inputs:

validate-digits-range 

digits-range-1-10

The problem is the text field is pre-populated with the currency sign £ so will not pass validation.

I have tried to adapt the validate-currency-dollar class but the test still fails

Validation.add('validate-currency-dollar', 'Please enter a valid $ amount. For example $100.00.', function(v) {
    // [$]1[##][,###]+[.##]
    // [$]1###+[.##]
    // [$]0.##
    // [$].##
    return Validation.get('IsEmpty').test(v) ||  /^\$?\-?([1-9]{1}[0-9]{0,2}(\,[0-9]{3})*(\.[0-9]{0,2})?|[1-9]{1}\d*(\.[0-9]{0,2})?|0(\.[0-9]{0,2})?|(\.[0-9]{1,2})?)$/.test(v)
});

Has anyone done this before can share some advice please?

Answer 1

I have changed a bit regular expression

/^[\$£]?\-?([1-9]{1}[0-9]{0,2}(\,[0-9]{3})*(\.[0-9]{0,2})?|[1-9]{1}\d*(\.[0-9]{0,2})?|0(\.[0-9]{0,2})?|(\.[0-9]{1,2})?)$/

Try it instead of standard ones.