There is a text box to whitelist your domain under the configuration page of your application in the developer console. It's the server's response that will add it, assuming your application has that domain whitelisted. The script uses YQL and “simulates” a proxy to bypass security. Access-Control-Allow-Origin header is something you cannot append with your request. jQuery to the rescueįortunately, a piece of script JQUERY is available and can help you achieve your goalsThis well hiden treasure can be found at the following link: only thing left to do is to add the script to your document (and of course load jQuery before) and you’re done. ![]() NET, HTACCESS involve having access to the server of the data source which could be hard to get if the data is not open and is managed by a third party (in which no one can help you to confirm the information you are missing)Also, there are no garantee that the source has been configured to accept headers. On the other end, permissions to add in PHP. It will contain the various headers it would send with the GET or POST as well as the headers 'Origin', 'Access-Control-Request-Method' (e.g., GET or POST ), and 'Access-Control-Request-Headers' (the headers it wants to send). Although, when the data gathered is exposed publicly, it can’t be suitable as a long terme solution since we can’t expect all visitors to have the extension installed. The browser will send your server a 'preflight' message using the OPTIONS HTTP verb (method). It allows to bypass the CORS in the browser in order to be able to test the request. Some of these answers are valid under certain conditions:įor the Chrome extension ( ) it works quite well. ![]() Response.AppendHeader("Access-Control-Allow-Origin", "*") Add at the beginning of its PHP file (* means all the domains, can be replaced by a domain in particular.This means that we can find all kinds of answers: The answers that can be found on the Internet are quite vague, many developers have apparently encountered this problem and many have difficulty understanding the principle. The following article discusses this problem: Not easy to find relevant information on the Internet ![]() The recent browsers then all adopted this system which can sometimes cause some problems. In summary, the W3C has recommended this mechanism to secure HTTP requests between different domains. The reason could probably be related to CORS (Cross Origin Requests). Have you ever encountered this kind of error when making an AJAX request to a JSON or XML file located on another domain?
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