edit 2018-09-13: added some precisions about this pre-flight request and how to avoid it at the end of this reponse. OPTIONS requests are what we call pre-flight requests in Cross-origin resource sharing (CORS). They are necessary when you’re making requests across different origins in specific situations. This pre-flight request is made by some browsers as … Read more
For the record, as far as I can tell, you had two problems: You weren’t passing a “jsonp” type specifier to your $.get, so it was using an ordinary XMLHttpRequest. However, your browser supported CORS (Cross-Origin Resource Sharing) to allow cross-domain XMLHttpRequest if the server OKed it. That’s where the Access-Control-Allow-Origin header came in. I … Read more
You are running into CORS issues. There are several ways to fix/workaround this. Turn off CORS. For example: how to turn off cors in chrome Use a plugin for your browser Use a proxy such as nginx. example of how to set up Go through the necessary setup for your server. This is more a … Read more
I found the easiest way is to use the node.js package cors. The simplest usage is: var cors = require(‘cors’) var app = express() app.use(cors()) There are, of course many ways to configure the behaviour to your needs; the page linked above shows a number of examples.
My crystal ball says that you are loading the model using either file:// or C:/, which stays true to the error message as they are not http:// So you can either install a webserver in your local PC or upload the model somewhere else and use jsonp and change the url to http://example.com/path/to/model Origin is … Read more
This answer covers a lot of ground, so it’s divided into three parts: How to use a CORS proxy to avoid “No Access-Control-Allow-Origin header” problems How to avoid the CORS preflight How to fix “Access-Control-Allow-Origin header must not be the wildcard” problems How to use a CORS proxy to avoid “No Access-Control-Allow-Origin header” problems If … Read more
Sounds like the recommended way to do it is to have your server read the Origin header from the client, compare that to the list of domains you would like to allow, and if it matches, echo the value of the Origin header back to the client as the Access-Control-Allow-Origin header in the response. With … Read more
Access-Control-Allow-Origin is a CORS (Cross-Origin Resource Sharing) header. When Site A tries to fetch content from Site B, Site B can send an Access-Control-Allow-Origin response header to tell the browser that the content of this page is accessible to certain origins. (An origin is a domain, plus a scheme and port number.) By default, Site … Read more
If I understood it right you are doing an XMLHttpRequest to a different domain than your page is on. So the browser is blocking it as it usually allows a request in the same origin for security reasons. You need to do something different when you want to do a cross-domain request. A tutorial about … Read more