Node Patterns

Explore intro and Node basics, understand the differences between Node and JavaScript, and master non-blocking, asynchronous code patterns for scalable, readable team projects.

Control the execution flow with callbacks to enforce the right sequence, avoid nesting by naming functions, check errors at each step, and modularize into separate files or use observers.

Modularize code by using module.exports and exports to expose objects or functions to other files, and export functions for dynamic initialization or function factories.

Explore how node modules cache files and how file name casing affects module identity, causing singleton issues. Use the global pattern to attach an app-wide object and colorize console output.

Explore how the function factory pattern creates new objects by returning a function with internal initialization and option-based customization, offering a simple alternative to prototype-based classes.

Explore the middleware pattern in node, a function with a callback that calls next to enable modular, reusable request handling. See how Express structures modules via request, response, and next.

Learn how the observer pattern replaces single callbacks by enabling multiple event listeners that can be added, removed, and executed at any stage of a module without breaking the app.

Discover higher-order functions as function factories that return customizable functions through closures, letting you tailor behavior by arguments while capturing outer scope.

Explore node patterns like hooks, middleware, singleton, and observers; compare functional vs prototype inheritance and function factories; and learn when to use each pattern.