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JavaScript Node.js Basics (2014) Building a Command Line Application Handling Errors in Node

Posted by Bami Learn
Bami Learn
914 Points

On a new line use the on method to listen for the error event. Pass in a callback function with one parameter of error.

I can't seems to find what I'm doing wrong in this code.

app.js 
var http = require("http");

http.get("http://teamtreehouse.com/chalkers.json", function(response){
  console.log(response.statusCode);
});

var request = http.get;
request.on('error', function(error){});

6 Answers

Erik McClintock
Erik McClintock
45,783 Points
Erik McClintock
Erik McClintock
45,783 Points

Bami,

You've got your variable request assigned incorrectly. The first task shouldn't have let it pass how you wrote it, which is why there is confusion now. They want you to create a variable request and assign it the result of your get request, which is retrieved from the filled out get request that was already present in the code. If you assign your request variable in the correct spot, you will pass (i.e. your call to the on method is correct).

You have:

var http = require("http");

http.get("http://teamtreehouse.com/chalkers.json", function(response){
  console.log(response.statusCode);
});

var request = http.get;
request.on('error', function(error){});

You want:

var http = require("http");

// this is where you create/assign the 'request' variable the result of your get request
var request = http.get("http://teamtreehouse.com/chalkers.json", function(response){
  console.log(response.statusCode);
});

request.on('error', function(error){});

Erik

codingchewie
codingchewie
8,764 Points
codingchewie
codingchewie
8,764 Points

Saw this when I got stuck but also noticed the age of this. The provided top voted answer uses var but with ES6 you can code the request with a const:

const request = https.get("https://teamtreehouse.com/chalkers.json", response => {
  console.log(response.statusCode);
});

Still new in learning but I believe instead of using:

request.on('error', function(error){});

you could use an arrow function:

request.on('error', error => {});

hope this helps the next person.

Ayman Omer
Ayman Omer
9,472 Points
Ayman Omer
Ayman Omer
9,472 Points 
       const https = require("https");

const request=https.get("https://teamtreehouse.com/chalkers.json", response => { 
  console.log(response.statusCode);

}); 


request.on('error',error=>{ })

          ```
Bami Learn
Bami Learn
914 Points
Bami Learn
Bami Learn
914 Points

oh! Thanks alot Erik

vikram 11023
vikram 11023
12,043 Points
vikram 11023
vikram 11023
12,043 Points

On a new line use the on method to listen for the error event. Pass in a callback function with one parameter of error.

const https = require("https");

var request = https.get("https://teamtreehouse.com/chalkers.json", response => { console.log(response.statusCode); });

request.on ('error',error => console.error('problem with request : $ {error.message}')); // callback functon with one parameter of error.

VENKATESH NALLA
VENKATESH NALLA
15,919 Points
VENKATESH NALLA
VENKATESH NALLA
15,919 Points

const https = require("https");

const request=https.get("https://teamtreehouse.com/chalkers.json", response => { console.log(response.statusCode);

}); request.on('error',error=>{ })