title: Merge Javascript objects, can't seem to find correct way
body: <p>Hi i've been struggling a bit and i cant seem to find why the methods i found dont work, could be "fixture-0" </p>
  
  <p>First Object array </p>
  
  <pre><code>personformdata[i]: "{"isInvalid":false,"agentRole":"role"}"
  </code></pre>
  
  <p>Second </p>
  
  <pre><code>address_ids[i] : "[{"address_id": "fixture-0" }]"
  </code></pre>
  
  <p>preferable out come, something like this.</p>
  
  <pre><code>"{"isInvalid":false,"agentRole":"role", "address_id": "fixture-0"}"
  </code></pre>