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from origin 'xxx' has been blocked by CORS policy: [duplicate]

OAuth2.0 - authentication using GitHub with front-end and back-end running on different servers. CORS errorJavaScript post request like a form submitDisable same origin policy in ChromeHow can I determine the URL that a local Git repository was originally cloned from?How to allow CORS?AngularJS performs an OPTIONS HTTP request for a cross-origin resourceCORS: Cannot use wildcard in Access-Control-Allow-Origin when credentials flag is trueWhy does my JavaScript get a “No 'Access-Control-Allow-Origin' header is present on the requested resource” error when Postman does not?Font from origin has been blocked from loading by Cross-Origin Resource Sharing policyResponse to preflight request doesn't pass access control checkCORS policy error with Angular, Springboot and OAUTH

-1

This question already has an answer here:

• 
  OAuth2.0 - authentication using GitHub with front-end and back-end running on different servers. CORS error
  
  2 answers
  
  

I'm trying the most basic get request from the browser and it fails due to CORs issues.

axios.get(
 "https://github.com/login/oauth/authorize?client_id=ID"
);

Is it just not possible to make this request from the browser? I'm trying to understand how it's possible to click a button and have this link work.

from origin 'http://localhost:3001' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

javascript node.js github cors axios

share|improve this question

edited Mar 7 at 7:38

DaImTo

46.5k1166246

asked Mar 7 at 6:36

John LippsonJohn Lippson

312214

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

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position: my: 'bottom left', at: 'top center', offsetTop: -7 ,
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Mar 12 at 11:29

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 | 

-1

This question already has an answer here:

• 
  OAuth2.0 - authentication using GitHub with front-end and back-end running on different servers. CORS error
  
  2 answers
  
  

I'm trying the most basic get request from the browser and it fails due to CORs issues.

axios.get(
 "https://github.com/login/oauth/authorize?client_id=ID"
);

Is it just not possible to make this request from the browser? I'm trying to understand how it's possible to click a button and have this link work.

from origin 'http://localhost:3001' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

javascript node.js github cors axios

share|improve this question

edited Mar 7 at 7:38

DaImTo

46.5k1166246

asked Mar 7 at 6:36

John LippsonJohn Lippson

312214

marked as duplicate by sideshowbarker cors
Users with the  cors badge can single-handedly close cors 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 12 at 11:29

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:

• 
  OAuth2.0 - authentication using GitHub with front-end and back-end running on different servers. CORS error
  
  2 answers
  
  

I'm trying the most basic get request from the browser and it fails due to CORs issues.

axios.get(
 "https://github.com/login/oauth/authorize?client_id=ID"
);

Is it just not possible to make this request from the browser? I'm trying to understand how it's possible to click a button and have this link work.

from origin 'http://localhost:3001' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

javascript node.js github cors axios

share|improve this question

edited Mar 7 at 7:38

DaImTo

46.5k1166246

asked Mar 7 at 6:36

John LippsonJohn Lippson

312214

axios.get(
 "https://github.com/login/oauth/authorize?client_id=ID"
);

share|improve this question

edited Mar 7 at 7:38

DaImTo

46.5k1166246

asked Mar 7 at 6:36

John LippsonJohn Lippson

312214

share|improve this question

edited Mar 7 at 7:38

DaImTo

46.5k1166246

asked Mar 7 at 6:36

John LippsonJohn Lippson

312214

edited Mar 7 at 7:38

DaImTo

46.5k1166246

edited Mar 7 at 7:38

DaImTo

46.5k1166246

asked Mar 7 at 6:36

John LippsonJohn Lippson

312214

asked Mar 7 at 6:36

John LippsonJohn Lippson

312214

2 Answers
2

active

oldest

votes

1

Simple answer is NO.

You can't call any endpoint (different origin) without server's permission.

ok! I got it. But why? How it works ?

It's called CORS (Cross-Origin Resource Sharing). In one line, it is a browser security . Browser blocks you to prevent such request.

Ok! but how browers knows that I don't have the permission or I'm cheating. :D

Well, if you check Network Tab of a browser, browser sends one more request to server (before actual request) with OPTION method. In the response of the request, server tells to browers if it's valid request or not.

For more details, Read MDN https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS

share|improve this answer

answered Mar 7 at 7:57

Ritwick DeyRitwick Dey

4,83221129

add a comment | 

-1

Ideal Solution

Your server should enable the cross origin requests and not the client. To do this, you can check this cool link with implementations and configurations for multiple platforms

Front-end fix to try

var config = 
 headers: 'Access-Control-Allow-Origin': '*'
;

axios.get(
 "https://github.com/login/oauth/authorize?client_id=ID, config"
);

Quick Temporary fix for development

Add this chrome extension to your chrome browser and turn it on. There won't be any cors issue but it is not a permanent fix.

share|improve this answer

answered Mar 7 at 8:03

Adarsh ChandranAdarsh Chandran

11

add a comment | 

1

Simple answer is NO.

You can't call any endpoint (different origin) without server's permission.

ok! I got it. But why? How it works ?

It's called CORS (Cross-Origin Resource Sharing). In one line, it is a browser security . Browser blocks you to prevent such request.

Ok! but how browers knows that I don't have the permission or I'm cheating. :D

Well, if you check Network Tab of a browser, browser sends one more request to server (before actual request) with OPTION method. In the response of the request, server tells to browers if it's valid request or not.

For more details, Read MDN https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS

share|improve this answer

answered Mar 7 at 7:57

Ritwick DeyRitwick Dey

4,83221129

add a comment | 

1

Simple answer is NO.

You can't call any endpoint (different origin) without server's permission.

ok! I got it. But why? How it works ?

It's called CORS (Cross-Origin Resource Sharing). In one line, it is a browser security . Browser blocks you to prevent such request.

Ok! but how browers knows that I don't have the permission or I'm cheating. :D

Well, if you check Network Tab of a browser, browser sends one more request to server (before actual request) with OPTION method. In the response of the request, server tells to browers if it's valid request or not.

For more details, Read MDN https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS

share|improve this answer

answered Mar 7 at 7:57

Ritwick DeyRitwick Dey

4,83221129

add a comment | 

Simple answer is NO.

You can't call any endpoint (different origin) without server's permission.

ok! I got it. But why? How it works ?

It's called CORS (Cross-Origin Resource Sharing). In one line, it is a browser security . Browser blocks you to prevent such request.

Ok! but how browers knows that I don't have the permission or I'm cheating. :D

Well, if you check Network Tab of a browser, browser sends one more request to server (before actual request) with OPTION method. In the response of the request, server tells to browers if it's valid request or not.

For more details, Read MDN https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS

share|improve this answer

answered Mar 7 at 7:57

Ritwick DeyRitwick Dey

4,83221129

share|improve this answer

answered Mar 7 at 7:57

Ritwick DeyRitwick Dey

4,83221129

answered Mar 7 at 7:57

Ritwick DeyRitwick Dey

4,83221129

answered Mar 7 at 7:57

Ritwick DeyRitwick Dey

4,83221129

-1

Ideal Solution

Your server should enable the cross origin requests and not the client. To do this, you can check this cool link with implementations and configurations for multiple platforms

Front-end fix to try

var config = 
 headers: 'Access-Control-Allow-Origin': '*'
;

axios.get(
 "https://github.com/login/oauth/authorize?client_id=ID, config"
);

Quick Temporary fix for development

Add this chrome extension to your chrome browser and turn it on. There won't be any cors issue but it is not a permanent fix.

share|improve this answer

answered Mar 7 at 8:03

Adarsh ChandranAdarsh Chandran

11

add a comment | 

-1

Ideal Solution

Your server should enable the cross origin requests and not the client. To do this, you can check this cool link with implementations and configurations for multiple platforms

Front-end fix to try

var config = 
 headers: 'Access-Control-Allow-Origin': '*'
;

axios.get(
 "https://github.com/login/oauth/authorize?client_id=ID, config"
);

Quick Temporary fix for development

Add this chrome extension to your chrome browser and turn it on. There won't be any cors issue but it is not a permanent fix.

share|improve this answer

answered Mar 7 at 8:03

Adarsh ChandranAdarsh Chandran

11

add a comment | 

Ideal Solution

Your server should enable the cross origin requests and not the client. To do this, you can check this cool link with implementations and configurations for multiple platforms

Front-end fix to try

var config = 
 headers: 'Access-Control-Allow-Origin': '*'
;

axios.get(
 "https://github.com/login/oauth/authorize?client_id=ID, config"
);

Quick Temporary fix for development

Add this chrome extension to your chrome browser and turn it on. There won't be any cors issue but it is not a permanent fix.

share|improve this answer

answered Mar 7 at 8:03

Adarsh ChandranAdarsh Chandran

11

var config = 
 headers: 'Access-Control-Allow-Origin': '*'
;

axios.get(
 "https://github.com/login/oauth/authorize?client_id=ID, config"
);

share|improve this answer

answered Mar 7 at 8:03

Adarsh ChandranAdarsh Chandran

11

answered Mar 7 at 8:03

Adarsh ChandranAdarsh Chandran

11

answered Mar 7 at 8:03

Adarsh ChandranAdarsh Chandran

11