Develop Reference

Send Ajax Request For Sending Post Data One Url to Another Url Without Getting CROS ERROR

-> Please Help Me To Solve The Problem
-> I Send Data To Another URL for Process Something And That Web Page is another Server and Different URL.
-> When Ever I Try To Send Post Data That time i Faced CROS Error i try many ways.
-> See My Code
$.ajax({
type: 'POST',
url: 'Another Non Https Url',
crossDomain: true,
contentType:'application/json',
data:{CompanyEmail:CompanyEmail,CompanyName:CompanyName,CompanyPhoneNumber:CompanyPhoneNumber,AccessToken:AccessToken},
success: function(){
alert("Success");
},
error: function(){
alert("Failed");
}
})

CORS (meaning "Cross Origin Resource Sharing") is a server-side mechanism to allow exceptions in the so-called Same-Origin-Policy. Otherwise processing data from another origin is prevented.
You have to explicitly enable CORS for your client within your server.
This can't be fixed in your client-side jQuery-Code.
PHP-side you are able to activate CORS for all clients by using
<?php
header("Access-Control-Allow-Origin: *");
?>
though.

Is it possible to make a cross origin request to a web page where I have no control?

Im trying to make a an Ajax call to https://www.treasury.gov/ofac/downloads/sanctions/1.0/sdn_advanced.xml but I keep getting No 'Access-Control-Allow-Origin' header is present on the requested resource.
Considering I have absolutely no control over the source of this information is this request actually possible? Do I just need the right configuration for my request or is this physically impossible?
$.ajax({
url: 'https://www.treasury.gov/ofac/downloads/sanctions/1.0/sdn_advanced.xml',
type: "GET",
crossDomain: true,
dataType: "xml",
success: function (response) {
console.log(response)
},
error: function (xhr, status) {
alert("error");
}
});

It is not possible as you have no access to source API and source may not have CORS enabled.
Regular web pages can use the XMLHttpRequest object to send and receive data from remote servers, but they're limited by the same origin policy. It is required that CORS is enabled for the source file. You can check more here regarding same origin policy.: https://developer.chrome.com/extensions/xhr

Unable to make ajax request to remote server from localhost

I am making an ajax request (with jquery) from my local server to a remote page (which I am the admin) and I get
No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://ica.local.com' is therefore not allowed access. The response had HTTP status code 405.
This is how my request looks like:
$.ajax({
url: myurl,
type: "POST",
// This is the important part
xhrFields: {
withCredentials: true
},
// This is the important part
success: function (response) {
// handle the response
},
error: function (xhr, status) {
// handle errors
}
});
The application on the remote server is running on nginx server. I tried to change the conf file of nginx to Access-Control-Allow-Origin: * but it still doesnt work.

It is because both the machines are on different servers. For development purpose you can use chrome extensions already available to fix the purpose.
Just search 'Cross origin issue' on chrome extension page and then include one of extensions

Try to create a sample server file like php and call the remote with curl from php.
Than return the response as json to your is

Error Cross Domain calling Json

I'm trying to bring my json file into my HTML but a error Cross Domain is happening:
XMLHttpRequest cannot load http://guardioesdacidadania.com.br/game_temp/assets/js/caratulas.json?jsoncallback=. The request was redirected to 'http://www.guardioesdacidadania.com.br/game_temp/assets/js/caratulas.json?jsoncallback=', which is disallowed for cross-origin requests that require preflight.
I've tried many different solutions but none of them worked.
Here's my js code.
$.ajax({
url: 'http://guardioesdacidadania.com.br/game_temp/assets/js/caratulas.json?jsoncallback=',
headers: { 'Access-Control-Allow-Origin': '*' },
crossDomain: true,
success: function () { alert('it works') },
error: function() {alert('it doesnt work')},
datatype: 'jsonp'
});

For CORS support to work, the server must be configured to respond with the Access-Control-Allow-Origin header, sending the header with your request does nothing. You can see a bit of information on how to get this to work by visiting : Origin is not allowed by Access-Control-Allow-Origin
If you do not have access to the server, then it is not possible to do it via AJAX so you'll need to create some sort of server side proxy to relay the request through.

Flickr API OAuth Access Token request and Access-Control-Allow-Origin

Context
I'm trying to get an Access Token from the Flickr API using their their OAuth specification.
The first step to get an Access Token is to obtain a Request Token. I successfully manage to generate a correctly signed and valid URL to request this token: when I copy/paste the generated URL in my browser, I get the correct response.
Problem
As this part doesn't concern the user, I'm trying to get the Request Token by making a simple Ajax call:
console.log(baseURL + "?" + requestURL);
// When I copy/paste the log result in my browser, it works.
$.ajax({
url: baseURL,
type: 'GET',
data: requestURL,
done: function(data) {
console.log('Request Token data', data);
}
});
The problem is that I get an Access-Control-Allow-Origin issue:
XMLHttpRequest cannot load http://www.flickr.com/...
Origin http://localhost:8080 is not allowed by Access-Control-Allow-Origin.
I've tried using dataType: 'jsonp' as a parameter of the Ajax call without any success:
GET http://www.flickr.com/... 401 (Unauthorized)
Any ideas? Thank you very much in advance for your help!

It is not possible to implement Oauth 1.0 through just javascript without any server side script. Since the flickr's new authentication process is based on Oauth 1.0a. You got to use a server-side script.