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Saving body from request.get() [duplicate]

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0

This question already has an answer here:

• 
  Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference
  
  6 answers
  
  

I want to save the body from a get request in a variable (using the request module), but its undefined.

I've searched for a solution but nothing worked so far. Guess the problem is that request.get is calles async (so far i have no experience in async functions).

const request = require("request")
...
let foo;
request.get(options,function(err,response,body)
 foo = body;
);
console.log(foo);

expected: the body of the valid get-request
actual: undefined

javascript node.js node-request

share|improve this question

asked Mar 23 at 16:37

DrSteifDrSteif

1

marked as duplicate by Jonathan Lonowski javascript
Users with the  javascript badge can single-handedly close javascript questions as duplicates and reopen them as needed.

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Mar 23 at 16:45

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

add a comment | 

0

This question already has an answer here:

• 
  Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference
  
  6 answers
  
  

I want to save the body from a get request in a variable (using the request module), but its undefined.

I've searched for a solution but nothing worked so far. Guess the problem is that request.get is calles async (so far i have no experience in async functions).

const request = require("request")
...
let foo;
request.get(options,function(err,response,body)
 foo = body;
);
console.log(foo);

expected: the body of the valid get-request
actual: undefined

javascript node.js node-request

share|improve this question

asked Mar 23 at 16:37

DrSteifDrSteif

1

marked as duplicate by Jonathan Lonowski javascript
Users with the  javascript badge can single-handedly close javascript questions as duplicates and reopen them as needed.

StackExchange.ready(function()
if (StackExchange.options.isMobile) return;

$('.dupe-hammer-message-hover:not(.hover-bound)').each(function()
var $hover = $(this).addClass('hover-bound'),
$msg = $hover.siblings('.dupe-hammer-message');

$hover.hover(
function()
$hover.showInfoMessage('',
messageElement: $msg.clone().show(),
transient: false,
position: my: 'bottom left', at: 'top center', offsetTop: -7 ,
dismissable: false,
relativeToBody: true
);
,
function()
StackExchange.helpers.removeMessages();

);
);
);
Mar 23 at 16:45

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

add a comment | 

This question already has an answer here:

• 
  Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference
  
  6 answers
  
  

I want to save the body from a get request in a variable (using the request module), but its undefined.

I've searched for a solution but nothing worked so far. Guess the problem is that request.get is calles async (so far i have no experience in async functions).

const request = require("request")
...
let foo;
request.get(options,function(err,response,body)
 foo = body;
);
console.log(foo);

expected: the body of the valid get-request
actual: undefined

javascript node.js node-request

share|improve this question

asked Mar 23 at 16:37

DrSteifDrSteif

1

const request = require("request")
...
let foo;
request.get(options,function(err,response,body)
 foo = body;
);
console.log(foo);

share|improve this question

asked Mar 23 at 16:37

DrSteifDrSteif

1

share|improve this question

asked Mar 23 at 16:37

DrSteifDrSteif

1

asked Mar 23 at 16:37

DrSteifDrSteif

1

asked Mar 23 at 16:37

DrSteifDrSteif

1

1 Answer
1

active

oldest

votes

0

The request is done in asynchronous way so your console.log happens before the request is completed, so foo is still undefined.

You must put your console log inside the callback body. Also, any computation requiring the result from the request should be started from within the callback.

request.get(options,function(err,response,body)
 console.log(body);
 doSomethingAfterMyRequest(body)
);

Also, you should handle your error, because if an error occurs during your request, it's possible that body remains undefined.

request.get(options,function(err,response,body)
 if (err) 
 console.error(err)
 return
 
 console.log(body);
 doSomethingAfterMyRequest(body)
);

share|improve this answer

answered Mar 23 at 16:44

François P.François P.

2,115716

add a comment | 

0

The request is done in asynchronous way so your console.log happens before the request is completed, so foo is still undefined.

You must put your console log inside the callback body. Also, any computation requiring the result from the request should be started from within the callback.

request.get(options,function(err,response,body)
 console.log(body);
 doSomethingAfterMyRequest(body)
);

Also, you should handle your error, because if an error occurs during your request, it's possible that body remains undefined.

request.get(options,function(err,response,body)
 if (err) 
 console.error(err)
 return
 
 console.log(body);
 doSomethingAfterMyRequest(body)
);

share|improve this answer

answered Mar 23 at 16:44

François P.François P.

2,115716

add a comment | 

0

The request is done in asynchronous way so your console.log happens before the request is completed, so foo is still undefined.

You must put your console log inside the callback body. Also, any computation requiring the result from the request should be started from within the callback.

request.get(options,function(err,response,body)
 console.log(body);
 doSomethingAfterMyRequest(body)
);

Also, you should handle your error, because if an error occurs during your request, it's possible that body remains undefined.

request.get(options,function(err,response,body)
 if (err) 
 console.error(err)
 return
 
 console.log(body);
 doSomethingAfterMyRequest(body)
);

share|improve this answer

answered Mar 23 at 16:44

François P.François P.

2,115716

add a comment | 

The request is done in asynchronous way so your console.log happens before the request is completed, so foo is still undefined.

You must put your console log inside the callback body. Also, any computation requiring the result from the request should be started from within the callback.

request.get(options,function(err,response,body)
 console.log(body);
 doSomethingAfterMyRequest(body)
);

Also, you should handle your error, because if an error occurs during your request, it's possible that body remains undefined.

request.get(options,function(err,response,body)
 if (err) 
 console.error(err)
 return
 
 console.log(body);
 doSomethingAfterMyRequest(body)
);

share|improve this answer

answered Mar 23 at 16:44

François P.François P.

2,115716

request.get(options,function(err,response,body)
 console.log(body);
 doSomethingAfterMyRequest(body)
);

request.get(options,function(err,response,body)
 if (err) 
 console.error(err)
 return
 
 console.log(body);
 doSomethingAfterMyRequest(body)
);

share|improve this answer

answered Mar 23 at 16:44

François P.François P.

2,115716

answered Mar 23 at 16:44

François P.François P.

2,115716

answered Mar 23 at 16:44

François P.François P.

2,115716