What is jquery?

jQuery is a JavaScript library that makes it easier for developers to write code that works across different web browsers. Instead of writing long, complicated commands to manipulate web pages, jQuery lets you write shorter, simpler code that does the same thing. Think of it as a translation layer between what developers want to do and the messy details of how different browsers actually work. This particular repository is the source code for jQuery itself, it's where the library gets built and tested. If you're a developer who wants to contribute to jQuery or build a custom version that only includes the features you need, this is where you'd do that work. The repository includes all the original code, plus tools to compile it into a smaller, optimized version that you can use in your websites. You can also exclude certain features (like animation effects or AJAX functionality) to make the library smaller if you don't need everything. To use this repository, you'll need to have a few developer tools installed on your computer, specifically Git, Node.js, and GNU Make, then you can clone the code and run a command to build it. The README is mainly aimed at people who want to contribute fixes and improvements to jQuery itself, so it includes detailed instructions on how to set up your environment, run tests, and work with the code using Git. It's not for someone just wanting to use jQuery in a website, those people would typically just download the pre-built library from jQuery's website instead.