title: jQuery attribute name contains
body: <p>I'm trying to target attributes names which contains a certain word &amp; not in the kind of way you're thinking.</p>
  
  <p>Lets say I have:</p>
  
  <pre><code>&lt;div data-foo-bar="hello"&gt;&lt;/div&gt;
  </code></pre>
  
  <p>How can I target elements which have <code>'data-foo'</code> in the attribute name?</p>