title: Javascript search for an object key in a set
body: <p>Is it possible to use the javascript "Set" object to find an element with a certain key?
  Something like that:</p>
  
  <pre><code>let myObjects = [{"name":"a", "value":0}, {"name":"b", "value":1},{"name":"c", "value":2}];
  let mySet = new Set(myObjects);
  console.log(mySet.has({"name":"a"}));
  </code></pre>