A callback is a function in JavaScript that runs after a specific task is completed. Instead of waiting for the task to finish, the callback allows other things to happen in the meantime and triggers ...

Asynchronicity in Programming Languages. ... But JavaScript was born inside the browser, its main job, in the beginning, was to respond to user actions, like onClick, onMouseOver, onChange, onSubmit ...

JavaScript is a popular language for developing web applications and is increasingly used for both client-side and server-side application logic. The JavaScript runtime is inherently event-driven and ...