// https://stackoverflow.com/questions/12741517/how-to-make-url-validation-without-http-or-add-it-after-validation-passed/44848476#44848476

let old_url = jQuery.validator.methods.url;
jQuery.validator.addMethod( 'url', function(value, element) {
		let url = old_url.bind(this);
		return url(value, element) || url('http://' + value, element);
	}, 'Please enter a valid URL'
);