When a required field is missing upon checkout, this uses jQuery to scroll to the top.

ee-jump-to-checkout-error.php

/**
 * Jump to error in EE checkout
 */
function ee_test_click_event_handler(){
	wp_add_inline_script(
		'ee_form_section_validation',
		'jQuery( "#spco-go-to-step-finalize_registration-submit" ).click(function( event ) {
            alert( "Handler for .click() called." );
        });'
	);
}
add_action( 'wp_enqueue_scripts', 'ee_test_click_event_handler', 11 );