title: Accessing JSON object keys having spaces
body: <p>I have following json object:</p>
  
  <pre><code>{ "id": "109",
    "No. of interfaces": "4" }
  </code></pre>
  
  <p>Following lines work fine:</p>
  
  <pre><code>alert(obj.id);
  alert(obj["id"]);
  </code></pre>
  
  <p>But if keys have spaces then I cannot access their values e.g.</p>
  
  <pre><code>alert(obj."No. of interfaces"); //Syntax error
  </code></pre>
  
  <p>How can I access values, whose key names have spaces? Is it even possible?</p>