RequireJS vs Selenium: What are the differences?
Developers describe RequireJS as "JavaScript file and module loader". RequireJS loads plain JavaScript files as well as more defined modules. It is optimized for in-browser use, including in a Web Worker, but it can be used in other JavaScript environments, like Rhino and Node. It implements the Asynchronous Module API. Using a modular script loader like RequireJS will improve the speed and quality of your code. On the other hand, Selenium is detailed as "Web Browser Automation". Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily, it is for automating web applications for testing purposes, but is certainly not limited to just that. Boring web-based administration tasks can (and should!) also be automated as well.
RequireJS belongs to "Front End Package Manager" category of the tech stack, while Selenium can be primarily classified under "Browser Testing".
"Open source", "Modular script loader " and "Asynchronous " are the key factors why developers consider RequireJS; whereas "Automates browsers", "Testing" and "Essential tool for running test automation" are the primary reasons why Selenium is favored.
RequireJS and Selenium are both open source tools. It seems that Selenium with 14.7K GitHub stars and 4.92K forks on GitHub has more adoption than RequireJS with 12.2K GitHub stars and 2.3K GitHub forks.
According to the StackShare community, Selenium has a broader approval, being mentioned in 770 company stacks & 425 developers stacks; compared to RequireJS, which is listed in 914 company stacks and 184 developer stacks.