title: Append JSON Strings
body: <p>I'm having a little trouble with some JS and hope someone can help. </p>
  
  <p>I have two JSON strings that are collected via AJAX using jQuery and then parsed accordingly. The issue I have is that if I ever want to add new features to the application I am making, the JSON strings are statically stored in the database and don't change if new attributes are added to the default JSON string.</p>
  
  <pre><code>var string1 = {
      "col1": [
          {
              "foo": "bar"
          }
      ],
      "col2": [
          {
              "foo": "bar",
              "bar": "foo"
          }
      ],
      "col3": [
          {
              "foo": "bar"
          }
      ]
  }
  
  var string2 = {
      "col1": [
          {
              "foo": "bar"
          }
      ],
      "col2": [
          {
              "foo": "bar"
          }
      ]
  }
  </code></pre>
  
  <p><code>string2</code> is the user saved the script, hypothetically saved three days ago. Since then, the default string <code>string1</code> has been added to, and the information needs to be added to <code>string2</code>.</p>
  
  <p>Can anyone help with this?</p>