title: How can I check if a string is all uppercase in JavaScript?
body: <p>There is a Javascript/Jquery boolean function to test if a string is all uppercase?</p>
  
  <p>example of matching:</p>
  
  <pre><code>"hello" =&gt; false
  "Hello" =&gt; false
  "HELLO" =&gt; true
  </code></pre>