How to add addition script to existing validation class

Question

I need to increase the validate-password class length to 8 characters.

How can I add that script in that validate-password class?

Note:

1. I don't want to create a new validation class
2. I don't want to add any class name (validate-length) to the password field

Answer 1

Here's a way that should work and no need to modify a core JS file. Just drop it into a custom JS file and ensure it's included after validation.js.

Validation.add('validate-password', 'Please enter 8 or more characters. Leading or trailing spaces will be ignored.', function(v) {
    var pass=v.strip(); /*strip leading and trailing spaces*/
    return !(pass.length>0 && pass.length < 8);
});

It essentially just replaces the callback validation method that is originally set in validation.js with one that checks for 8 characters or more.

I'd be curious to know why you don't want to add the validate-length field as it seems like an easier approach to me.

NOTE: I haven't used this personally I just whipped it up on the demo store and tested it briefly.