Email Validation With domain

// output = iamfarhan09@gmail.com = true;
// output = iamfarhan09@gmail = false 
// output = iamfarhan09@gmail.com.co =true 
//N.B: you have to replace all ids with your form id otherwise it will not work. 
jQuery(document).ready(function() {
    jQuery("#fluentform_36  button[type='submit']").attr('disabled', true);
    
    jQuery('input#ff_36_email').on("change", function() {
        
        const email = jQuery("input#ff_36_email").val();
        
        const regex = /^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
        if(!regex.test(email)) {
            
            jQuery("#fluentform_36  button[type='submit']").attr('disabled', true);
            
        } else {
            jQuery("#fluentform_36  button[type='submit']" ).attr('disabled', false);
            
        }
    });
});