Node.js request Module

GET requests

GET requests are those that request a site to provide specific resources or certain data.

In this Node.js tutorial, we will learn how to use the request module to handle GET requests from HTTP web servers in Node.js to other websites.

Using the request Node.js module to handle GET requests

Node.js has a module named "request" that can help us make requests to another website. We will start from the installationStarting with the Node.js request module.

Install the "request" Node.js module

Open the terminal or command prompt and run the following command to install the request Node.js module

Example of Node.js GET request

The following is an example Node.js file that will include the request module. It requests to get the resource " http://www.google.com. The callback function provided as the second parameter receives error (if any), response, and body.

//　Using the Node.js request module to handle GET requests
//　Introducing the request module
var　request　=　require("request");　
　
//Resource "http://www.google.com"　send a get request　
request("http://www.google.com",function(error,response,body)　
　{　
　　　　console.log(response);　
　});

Run the above Node.js file in the terminal as follows

The response will be echoed to the console.

If there are no errors with the GET request, the contentErrorIsZeroThis information can be used to check for any errors in the 'GET requests' for resources.

Example of Node.js Get Request Error

In some cases, we may encounter errors when making 'GET requests' for resources. The following example is one of these cases, where the provided URL is incorrect.

　
//　Include the request module
var　request　=　require("request");　
　
//　make　a　get　request　for　the　resource　"http://www.go1411ogle.com"
request("http://www.go1411ogle.com",function(error,response,body)　
　{　
　　　　console.log(error);　
　});

Terminal Output

　
　$　node　serverGetRequestsError.js　　
　{　Error:　getaddrinfo　ENOTFOUND　www.go1411ogle.com　www.go1411ogle.com:80
　　　　at　errnoException　(dns.js:53:10)　
　　　　at　GetAddrInfoReqWrap.onlookup　[as　oncomplete]　(dns.js:95:26)　
　　code:　'ENOTFOUND',　
　　errno:　'ENOTFOUND',　
　　syscall:　'getaddrinfo',　
　　hostname:　'www.go1411ogle.com',　
　　host:　'www.go1411ogle.com',　
　　port:　80　}

Conclusion:

In this Node.js tutorial, we learned how to use the request module to handle 'GET requests' to other websites from the HTTP web server in Node.js.