title: Delete key-value from object in array, Javascript
body: <p>I have an array that looks like this:</p>
  
  <pre><code>$scope.quotes =
      [
          {
              'quote': 'foo',
              'author': 'bar',
              'source': 'foobar',
              'first': 'slideout',
          },
          {
              ...
          },
      ]
  </code></pre>
  
  <p>I'm trying to remove the key-value first: slideout from the array. like this:</p>
  
  <pre><code>delete $scope.quotes[0][first];
  </code></pre>
  
  <p>I also tried:</p>
  
  <pre><code>delete $scope.quotes[0].first;
  </code></pre>