JSide is a free and easy to use app that lets you write, share, and run your JavaScript. With JSide, you can write and run your code on your device, online, or both. You can do so with an integrated editor, a built-in command line, and a JavaScript library.

A JSide code editor lets you write and edit your code in real-time. It supports syntax highlighting, automatic indenting, and other tools that make code easier to read. You can also write and run code offline.

A JSide command line allows you to specify commands to run in the background. It supports the concept of a multi-line command and has syntax highlighting. You can use JSide to run a program, get a log, and see the results.

A JSide library provides a set of functions and objects. It supports the concept of an object and has syntax highlighting and automatic indenting. You can use it to get a string, number, or object.

A JSide app is made up of a main window and a toolbar. The main window is where you can edit your code and the toolbar is where you can run your code.