We will explore the existing major JavaScript API’s including wp.api – the bundled REST API client, wp.customize the improved JavaScript Customizer API, wp.codeEditor – the new code editor built into WordPress; wp.heartbeat – a powerful and easy client/server synchronization API; and wp.media – to leverage the media modal. We’ll also explore the future of WordPress JavaScript and look at the JavaScript APIs coming to WordPress including the APIs exposed by Gutenberg, and the WordPress npm packages including wp.hooks – JavaScript actions and filters matching the PHP versions.