Simple problem with JQuery when creating an extension

Hello, I'd like a help on a JQuery snippet, the problem is simple but I do not know how to solve it because I'm a beginner and I'm having a lot of trouble. I'm going to explain everything right about the project I'm doing is the following I'm working out an extension for Google Chrome, and the purpose of the extension is when the user installs the extension in their browser the extension will always run a script in Java Script in all I have a JQuery function. I have a JQuery function that I want to add to the JQuery function. I have a JQuery function. could help me more as I had never had contact with this language I am facing difficulties. If someone knows how to help me in this language or know of some other language that has a function more appropriate to my goal. If you want to help me I'll give you the project files to analyze. Anyway, that's it.