The code is essentially a Flash player, but written in JavaScript. Its purpose is to take Flash content and then re-encode it to a cross-platform JavaScript in real time.

It allows developers to write and run Python code in HTML, and call Javascript libraries in PyScript. This system allows a website to be written entirely in Python.

“With the new capabilities in the JavaScript Editor, developers can write clean code with well-defined formats with everything in a single file,” said Abhishek Nayak, co-founder and CEO of ...

It is written in HTML, CSS, and JavaScript, which run in a thin native shell, and supports 30-odd languages. Brackets extensions are also written in JavaScript and can call Node.js modules.

This malicious code, written in a scripting language like JavaScript or PHP, can do anything from vandalizing the website you’re trying to load to stealing your passwords or other login credentials.