title: Add one to the value of a textfield
body: <p>How do i add one to the value of a text field? For example, quantity?
  This is how i get the object from the DOM - what do i do from here?</p>
  
  <pre><code>$(this).parent("div").children("input").val();
  </code></pre>
  
  <p>This is the value of my text field :)</p>