title: How to find value in json
body: <p>How to fine state name using postcode in bellow  json data;</p>
  
  <pre><code>var data = '{
    "1": {
      "state": "VIC",
      "postcode": "2600,2603,2605,2606"
    },
    "2": {
      "state": "NSW",
      "postcode": "2259,2264"
    }
  }'
  </code></pre>
  
  <p>How to find <code>state</code> by <code>postcode</code>;</p>
  
  <p>if i search postcode <code>2600</code> if get result like <code>VIC</code> </p>