Node.js http.ClientRequest.setHeader() Method

The http.ClientRequest.setHeader() is an inbuilt application programming interface of class ClientRequest within the HTTP module which is used to set the object of the header.

Syntax:

const request.setHeader(name, value)

Parameters: This method takes the name and value of the particular header as a parameter as key-value pair.

Return Value: This method has nothing to return.

Example 1: Filename-index.js

Run the index.js file using the following command:

node index.js

Output:

before operation :- text/html
after operation :- undefined

Example 2: Filename-index.js

Run the index.js file using the following command:

node index.js

Output:

before operation :- type=ninja,language=javascript
after operation :- undefined

Reference: https://nodejs.org/dist/latest-v12.x/docs/api/http.html#http_request_setheader_name_value