title: Sum values of objects in array
body: <p>I would like to create a sum of an array with multiple objects.</p>
  
  <p>Here is an example:
      <code>var array = [{"adults":2,"children":3},{"adults":2,"children":1}];</code></p>
  
  <p>How do I return the sum of adults and the sum of children into a new variable for each?</p>
  
  <p>Thanks,
  c.</p>