Embeddable buttons, badges, and widgets are a primary motivation for developing APIs. Consider the numerous buttons and widgets from social platforms like Facebook and Twitter that we’ve encountered over the years; all of these are powered by APIs. These JavaScript snippets utilize simple web APIs to fetch data, submit information, and perform various functions.
Combining HTTP and JSON with embedded JavaScript on a website enables a wide range of tasks, such as logging in, sharing content, and displaying news feeds—features that users often take for granted. These API-driven elements are a significant reason why companies are investing in their API infrastructure.