title: jQuery: Why my contains() is not case sensitive?
body: <p>I'm trying to use the contains() function on my code and I need it to be case sensitive, which is supposed to be, but it's not. 
  Whether I type </p>
  
  <pre><code>$("keyword:contains('{Keyword:')") 
  </code></pre>
  
  <p>or </p>
  
  <pre><code>$("keyword:contains('{KeyWord:')") 
  </code></pre>
  
  <p>It still works. What am I doing wrong?
  This is my JsFiddle : <a href="https://jsfiddle.net/xpvt214o/463834/" rel="nofollow noreferrer">https://jsfiddle.net/xpvt214o/463834/</a></p>
  
  <p>Thank you</p>