Building Browser Extensions: Create Modern Extensions for Chrome, Safari, Firefox, and Edge

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2023

M. FrisbieBuilding Browser Extensionshttps://doi.org/10.1007/978-1-4842-8725-5_7

7. Background Scripts

Matt Frisbie¹  

(1)

California, CA, USA

 

Browser extension developers often find the need to execute JavaScript in the background of a browser. Background scripts, as their name suggests, are the answer to this problem: they are a separate JavaScript runtime that can communicate with all the different pieces of the extension, add handlers for many different browser events, and operate without dependence on any web page or extension user interface.

Note

This chapter will focus on the manifest v3 implementation of background scripts as service workers. Manifest ...