title: using json objects in URLSearchParams
body: <p>Is it possible to somehow append json objects onto a URLSearchParams object?</p>
  
  <p>So instead of:</p>
  
  <pre><code>urlSearchParams.append('search', 'person');
  </code></pre>
  
  <p>it's:</p>
  
  <pre><code>urlSearchParams.append({search: "person"});
  </code></pre>
  
  <p><br>
  <b>My answer courtesy of Darshak Gajjar's answer</b></p>
  
  <p>Can use json objects via this way:</p>
  
  <pre><code>let test_this = [{"search": "person"}, { search: "another person"}];
  var json = JSON.stringify(test_this);
  urlSearchParams.append("myobj", json);
  
  return this.http.post(this.post_url, urlSearchParams, options) //options being your own RequestOptions
  </code></pre>