Greasemonkey Scripts
Greasemonkey is a browser extension that allows users to install and run custom JavaScript scripts to modify the appearance or behavior of web pages. These scripts, known as Greasemonkey scripts or user scripts, can automate tasks, add features, or remove unwanted elements from websites. They run locally in the browser and are commonly used for web scraping, ad blocking, or enhancing user interfaces on specific sites.
Developers should learn Greasemonkey scripts when they need to customize or automate interactions with web pages without modifying the site's source code, such as for testing, data extraction, or improving productivity on frequently used websites. It's particularly useful for creating quick prototypes, debugging, or building browser-based tools that rely on existing web interfaces, like automating form submissions or extracting data from dynamic pages.