Build a Frontend Web Framework (From Scratch)

1 Are frontend frameworks magic to you?

This chapter covers

• Why you should build your own frontend framework
• The features of the framework we’ll build together
• How frontend frameworks work

Have you ever wondered how the frontend frameworks you use work internally? Are you curious about how they decide when to re-render a component and why they update only the parts of the Document Object Model (DOM) that change? Isn’t it interesting that a single HTML page can change its content without reloading and that the URL in the browser’s address bar changes without requesting the new page from a server? The inner workings of frontend frameworks are fascinating, and there’s no better way to learn about them than to build one from scratch. But why ...