function validate() {
    let validateCompanyNumber = false;
    $('#submit').on('click',function(ev) {
        ev.preventDefault();
        //username shit
        let username = $('#username').val();
        if (username.length >= 3 && username.length <= 20) {
            let match = username.match(/[^_\W]+/);
            console.dir(match);
            console.dir(username);
            if (match[0] === username) {
                $('#username').css('border', 'none');
            } else {
                $('#username').css('border-color', 'red');
            }
        } else {
            $('#username').css('border-color', 'red');
        }

        //password shit
        let password = $('#password').val();
        let passwordConfirm = $('#confirm-password').val();
        if (password.length >= 5 && password.length <= 15) {
            let match = password.match(/\w+/);
            if (match[0] === password && password == passwordConfirm) {
                $('#password').css('border', 'none');
            } else {
                $('#password').css('border-color', 'red');
            }
        } else {
            $('#password').css('border-color', 'red');
        }

        //password confirm shizzle
        if (passwordConfirm.length >= 5 && passwordConfirm.length <= 15) {
            if (password === passwordConfirm) {
                $('#confirm-password').css('border', 'none');
            } else {
                $('#confirm-password').css('border-color', 'red');
                $('#password').css('border-color', 'red');
            }
        } else {
            $('#confirm-password').css('border-color', 'red');
            $('#password').css('border-color', 'red');
        }

        //company number shizz
        let companyNumber = $('#companyNumber').val();
        if (companyNumber >= 1000 && companyNumber <= 9999) {
            $('#companyNumber').css('border', 'none');
        } else {
            $('#companyNumber').css('border-color', 'red');
        }

        //email gobshite
        let email = $('#email').val();
        let emailMatch = email.match(/(.+)@(.+)\.(.+)/);
        if (emailMatch != null){
            if (emailMatch[0] === email) {
                $('#email').css('border', 'none');
            } else {
                $('#email').css('border-color', 'red');
            }
        } else {
            $('#email').css('border-color', 'red');
        }
        //valid visible foshizzle
        if ($('#username').css('border') == '0px none rgb(0, 0, 0)'
            && $('#email').css('border') == '0px none rgb(0, 0, 0)'
            && $('#password').css('border') == '0px none rgb(0, 0, 0)'
            && $('#confirm-password').css('border') == '0px none rgb(0, 0, 0)') {
            if (validateCompanyNumber) {
                if ($('#companyNumber').css('border') == '0px none rgb(0, 0, 0)') {
                    $('#valid').css('display', 'inherit');
                } else {
                    $('#valid').css('display', 'none');
                }
            } else {
                $('#valid').css('display', 'inherit');
            }
        } else {
            $('#valid').css('display', 'none');
        }
    });
    $('#company').on('change', function () {
        if ($(this).is(':checked')) {
            $('#companyInfo').css('display', 'inherit');
            validateCompanyNumber = true;
        } else {
            $('#companyInfo').css('display', 'none');
            validateCompanyNumber = false;
        }
    });
}