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why req.body is undefined

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YOU.com answered on February 21, 2020 Popularity 8/10 Helpfulness 1/10

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why req.body is undefined

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There can be several reasons why `req.body` is undefined. Here are a few possible explanations and potential solutions:

1. Missing body-parser middleware: If you're using Express.js, make sure that you have added the `body-parser` middleware to your application before trying to access `req.body`. Without the middleware, `req.body` will be undefined. Add the following code to your server file:

   const express = require('express');
   const bodyParser = require('body-parser');
   const app = express();

   app.use(bodyParser.urlencoded({ extended: false }));
   app.use(bodyParser.json());

   // ...rest of your server code

2. Incorrect request content type: If you're making a POST request, ensure that the appropriate content type is set. If you're sending JSON data, make sure to include the following header in your request:

   Content-Type: application/json

3. Missing name attribute in the HTML form: If you're trying to access form data from an HTML form, ensure that all input fields have a `name` attribute specified. Without the `name` attribute, it won't be included in the request body.

If you have tried the above steps and `req.body` is still undefined, there might be other factors causing the issue. Please provide more details or code snippets for further assistance.

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Contributed on Sep 11 2023

YOU.com

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var bodyParser = require('body-parser')
var app = express()

// parse application/x-www-form-urlencoded
app.use(bodyParser.urlencoded({ extended: false }))

// parse application/json
app.use(bodyParser.json())

Popularity 10/10 Helpfulness 10/10 Language javascript

Source: stackoverflow.com

Tags: javascript j

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Contributed on Feb 21 2020

Enthusiastic Earthworm

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req.body showing undefined

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//express doesn't by default support json data input so use express.json() middleware
const app= express();
app.use(express.json());

Popularity 9/10 Helpfulness 6/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Nov 13 2022

Shirshak Kandel

0 Answers Avg Quality 2/10

why req.body is undefined

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