Using CORS-Anywhere via AJAX

cors.js

  /*
      If you are attempting to call an AJAX API, via GET which responds:
        No 'Access-Control-Allow-Origin' header is present on the requested resource.

      You can modify the way you query it to go through a server which will add the header.
      Basically, you add the URL you want (with query string parameters) at the end of 
      'https://cors-anywhere.herokuapp.com/'
      , and ensure that your ajax call is done with some additional options as shown below
      
      See CORS-Anywhere documentation here for more:
      https://github.com/Rob--W/cors-anywhere/#documentation
      
      Note: this 'fix' relies on the Heroku App https://cors-anywhere.herokuapp.com/ 
      being up and running! Your milage may vary. NOT for production use :)
    */

    var originalURL = "https://some-api-without-cors?api_key=foo&param1=val1";
    var queryURL = "https://cors-anywhere.herokuapp.com/" + originalURL

    $.ajax({
      url: queryURL,
      method: "GET",
      dataType: "json",
      // this headers section is necessary for CORS-anywhere
      headers: {
        "x-requested-with": "xhr" 
      }
    }).done(function(response) {
      console.log('CORS anywhere response', response);
    }).fail(function(jqXHR, textStatus) { 
      console.error(textStatus)
    })

I'm trying it with a POST request and I got a 403 forbidden error, does this method work for post request?