title: What is the q=0.01 $.getJSON adds to the request header?
body: <p>I've noticed this parameter on the <code>Accept</code> request header as:</p>
  
  <p><code>Accept: application/json, text/javascript, */*; q=0.01</code></p>
  
  <p>I am a bit curious about what the <code>q=0.01</code> means?</p>