title: Angular 5 JSONP request with HttpHeaders
body: <p>I'm trying to perform a JSONP request with some HTTP header parameters. With <strong>http.get</strong> is simple:</p>
  
  <pre><code>let header = new HttpHeaders();
  header.append(&lt;header_param_name&gt;, &lt;header_param_value&gt;);
  
  this.http.get(&lt;my_url&gt;, { headers: header})
  </code></pre>
  
  <p>but when I try to do the same thing with <strong>jsonp</strong>...</p>
  
  <pre><code>this.http.jsonp(&lt;my_url&gt;, &lt;callback_param&gt;)
  </code></pre>
  
  <p><strong>where is the "options" parameter???</strong> O_o
  How can I send parameters in request header in a JSONP request?</p>
  
  <p>Thanks for the response</p>