title: Can I make a jQuery JSONP request without adding the '?callback=' parameter in URL?
body: <p>The server won't accept any parameters in a request URL, so I need to remove all the extra parameters in the URL and of course I can't control the server.</p>
  
  <p>jQuery:</p>
  
  <pre><code>$.ajax({
      type: 'GET',
      url: 'http://cross-domain.com/the_jsonp_file,
      jsonpCallback: 'jsonCallback',
      contentType: 'application/json',
      cache: 'true',
      dataType: 'jsonp',
      success: function(json) {
          console.log(json);
      },
  });
  </code></pre>
  
  <p>The JSONP file:</p>
  
  <pre><code>jsonCallback({"test": "hello"});
  </code></pre>
  
  <p>When I send that Ajax request, the URL looks like this:</p>
  
  <pre><code>http://cross-domain.com/the_jsonp_file?callback=jsonCallback
  </code></pre>
  
  <p>But I need this (without parameters):</p>
  
  <pre><code>http://cross-domain.com/the_jsonp_file
  </code></pre>
  
  <p><strong>EDIT:</strong></p>
  
  <p>Here is my whole situation:</p>
  
  <pre><code>function MyClass(imgs) {
      // imgs is array of URLs
      this.imgs = imgs;
  
      this.submit = function() {
          // button click event triggers this method
          this._show();
      };
  
      this._show = function() {
          var _this = this;
  
          for (var i = 0; i &lt; _this.imgs.length; i++) {
              (function($, j) {
                  $.ajax({
                      type: 'GET',
                      url: _this.imgs[j],
                      jsonp : false,
                      jsonpCallback: 'jsonCallback',
                      cache: 'true',
                      dataType:'jsonp',
                      success: function(json) {
                        console.log(_this.imgs[j]);
                      },
                  });
              })(jQuery, i);
          };
      };
  };
  </code></pre>
  
  <p>And I got this error message:</p>
  
  <pre><code>Uncaught TypeError: Property 'jsonCallback' of object [object Window] is not a function
  </code></pre>
  
  <p>Weird thing is few requests are successfully calling jsonCallback.</p>