Customize WhatsApp share text

Sure, there is a dynamic filter on the query_args which is used to create every button. So the button name is part of the hook, but all the parameters for the filter are the same. For WhatsApp, you could do something like this:

add_filter( 'scriptlesssocialsharing_whatsapp_query_args', 'prefix_modify_whatsapp_text', 10, 4 );
/**
 * Modify the text for the WhatsApp button.
 *
 * @param array  $args
 * @param string $button_name
 * @param array  $attributes
 * @param array  $setting
 *
 * @return mixed
 */
function prefix_modify_whatsapp_text( $args, $button_name, $attributes, $setting ) {
	$args['text'] = 'Look at this article: ' . $args['text'];

	return $args;
}

which should give you the modified text you want for the button. Hope that helps you get started.

Sure, you can do whatever you want with the text. The original example uses only the query args parameter which is passed to the filter, but you can see that three other items are passed as well:

• button name: this will be whatsapp, twitter, etc.
• attributes: these attributes are specific to the post being shared, including the post ID, title, permalink, etc.
• setting: the plugin setting

To really experiment with it, I would suggest testing the filter locally and dumping out the attributes, for example, to see what you can do. So you could change the middle/modification line in the example above to something like:

$args['text'] = 'Please vote for ' . $attributes['title'] . ' at our contest — ' . $attributes['permalink'];

…note that would change the WhatsApp button text sitewide, which may not be appropriate. Using the attributes, however, you could run your filter only conditionally based on the post ID, for example.