Bookmarklets
Bookmarklets are small JavaScript programs stored as bookmarks in a web browser, allowing users to execute custom code on web pages with a single click. They are lightweight tools that enhance browser functionality by automating tasks, modifying page content, or extracting data without requiring extensions or plugins. Typically written in JavaScript, bookmarklets run in the context of the current webpage, making them versatile for web development, testing, and productivity.
Developers should learn bookmarklets for quick prototyping, debugging, and automating repetitive web tasks, such as form filling, DOM manipulation, or scraping data during development. They are useful for testing web applications by injecting scripts to simulate user interactions or check performance without complex setups. Bookmarklets also serve as a simple way to share tools with non-technical users, as they require no installation and work across most browsers.