on click window.open

$link = get_field('resource_link');
if( $link ){
	$link_url = $link['url'];
	$link_title = $link['title'];
	if(empty($link_title))
		if( $str )
			$link_title = $str;
	$link_target = $link['target'] ? $link['target'] : '_self';
}else{
        $link_target = '_self';
	$link_url = get_the_permalink();
}

onclick="window.open('<?php  echo esc_attr( $link_url ); ?>', '<?php echo esc_attr( $link_target ); ?>')"