In Node.js applications, modules are like JavaScript libraries and include a set of functions. To include a module in a Node.js application, we must use the require() function with the parentheses containing the module’s name.
Node.js has several modules which are used to provide the basic functionality needed for a web application. Following is a list of some of them:
| Core Modules | Description |
|---|---|
| HTTP: | The HTTP module includes classes, methods, and events to create a Node.js HTTP server. |
| util: | The util module includes utility functions required in the application and is very useful for developers. |
| url: | The url module is used to include the methods for URL parsing. |
| fs: | The fs module includes events, classes, and methods to handle the file I/O operations. |
| stream: | The stream module is used to include the methods to handle streaming data. |
| query string: | The query string module is used to include the methods to work with a query string. |
| zlib: | The zlib module is used to include the methods to compress or decompress the files used in an application. |
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