Simple JS Inject Inline

add_action( 'wp_footer', function() { ?>
<script>

	jQuery(document).ready(function(){
		jQuery('.site-search-toggle.search-dropdown-toggle').click(function () {
			event.preventDefault();
			return false;
			jQuery(".searchform-submit").trigger( "click" );

			//alert('alert');
		});
	});

</script>
<?php }, 99 );