Express body-parser is an npm module used to process data sent in an HTTP request body. It provides four express middleware for parsing JSON, Text, URL-encoded, and raw data sets over an HTTP request body. Before the target controller receives an incoming request, these middleware routines handle it.

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This tutorial on Body Parser will walk you through all the topics on Express Body Parser.

Before parsing, it was just a regular string that could not access the data encoded inside, but after parsing, it becomes a JavaScript object where it can access the various data within.

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What Is Body-parser?

  • Body-parser parses is an HTTP request body that usually helps when you need to know more than just the URL being hit.
  • Specifically in the context of a POST, PATCH, or PUT HTTP request where the information you want is contained in the body.
  • Using body-parser allows you to access req.body from within routes and use that data.

For example: To create a user in a database.           

Installation

To install the body-parser first, you must create a project and the first command you will write here is npm init -y.

This is used to create a JSON file, and in that you can add all the dependencies.

  • Step 1:

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  • Step 2: Now, you have to install express for that, you will write a command npm i express.

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  • Step 3: After that, go ahead and install body-parser. For that write command on your terminal. 

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Now, the body-parser is installed in your system.

  • Step 4: Go ahead and write a basic Express app that is common in every express application.

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Express Route-Specific

The example below shows you how to add body parsers - specifically to the routes requiring them. This is the considered the most apt technique to utilize body-parser with Express.

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Next Steps

Hope this express body-parser tutorial has provided you with a foundational grasp of Express JS.

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If you have any specific queries for us, please let us know. Please share any recommendations or questions about using Express body-parser in the comments section below, and our experts will answer them.

About the Author

Anubhav SharmaAnubhav Sharma

Anubhav is a Research Analyst. He enjoys working on dynamic projects where he can learn new things. He is responsible and diligent. Being a resident of Jammu, he loves nature and exploring new places.

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