title: How to parse JSON to object with lower case key
body: <p>I have some JSON data but all the keys are in UPPER case. How to parse them and convert the keys to lower? I am using jQuery.</p>
  
  <p>for example:</p>
  
  <p>JSON data:</p>
  
  <pre><code>{"ID":1234, "CONTENT":"HELLO"}
  </code></pre>
  
  <p>Desired output:</p>
  
  <pre><code>{id:1234, content:"HELLO"}
  </code></pre>