Hijacker is a free Chrome add-on developed by krapnik. It falls under the category of Browsers and is specifically classified as an Add-ons & Tools subcategory. This program allows users to inject and hijack JavaScript code by leveraging the Abstract Syntax Tree (AST) technique.

With Hijacker, users can easily modify and replace data within JavaScript code, achieving the desired outcome. It is a toy project developed by krapnik and is available on both desktop (resembling "金山游侠") and mobile (resembling "八门神器") platforms.

Hijacker offers a convenient way for developers to experiment with code injection and data manipulation in JavaScript. By utilizing the AST hook, users can gain insights into how JavaScript code can be intercepted and modified to suit their needs. Please note that Hijacker is a tool for educational and experimental purposes, and should not be used for any malicious activities.