Magento – How to Remove Password Matching in Account Registration Form

Children of class Mage_Customer_Model_Customer should use getPasswordConfirmation() instead of getConfirmation()

Upd: In class Mage_Customer_Model_Customer, method validate() was changed

Before v1.9.1:

$confirmation = $this->getConfirmation();

After:

$confirmation = $this->getPasswordConfirmation();

• https://github.com/speedupmate/Magento-CE-Mirror/blame/master/app/code/core/Mage/Customer/Model/Customer.php#L841
• https://github.com/speedupmate/Magento-CE-Mirror/commits/magento-ce-1.9.1.0/app/code/core/Mage/Customer/Model/Customer.php

I found the answer. var con and var pass are the names of inputs so I made new two validators and code looks like this

['validate-password-checkout-register', 'Please enter 6 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 < 6);
}],

And

['validate-cpassword-checkout-register', 'Please make sure your passwords match.', function(v) {
            var conf = $('billing[confirm_password]') ? $('billing[confirm_password]') : $$('.validate-cpassword-checkout-register')[0];
            var pass = false;
            if ($('billing[customer_password]')) {
                pass = $('billing[customer_password]');
            }
            var passwordElements = $$('.validate-password-checkout-register'); //used my validator for password
            for (var i = 0; i < passwordElements.size(); i++) {
                var passwordElement = passwordElements[i];
                if (passwordElement.up('form').id == conf.up('form').id) {
                    pass = passwordElement;
                }
            }
            if ($$('.validate-admin-password').size()) {
                pass = $$('.validate-admin-password')[0];
            }
            return (pass.value == conf.value);
        }],

And I also add class validate-password-checkout-register to password input and validate-cpassword-checkout-register to confirming password input.