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Play by Play is a series in which top technologists work through a problem in real time, unrehearsed, and unscripted. In this course, Play by Play: Extending the Browser, Brian Clark and John Papa explore the tools you can use to build and publish your own browser extensions. Learn the different types of extensions you could create, how to mask extensions, and finally how to share extensions. By the end of this course, you’ll have all the knowledge necessary to build and publish your own browser extension with JavaScript, HTML, and CSS.