title: How to detect a pangram
body: <p>A pangram is a sentence that contains every single letter of the alphabet at least once.</p>
  
  <p>Here is my code so far:</p>
  
  <pre><code>const isPangram = (string) =&gt; {
      let alpha = string.toUpperCase().split("");
      for (let beta = 65; beta &lt; 65 + alpha.length; beta++) {
          let gamma = String.fromCharCode(beta);
          if (alpha.includes(gamma)) {
              continue;
          }
          else {
              return false;
          }
      }
      return true;
  }
  
  console.log(isPangram("Detect Pangram"));
  </code></pre>
  
  <p>Why does "Detect Pangram" return true?</p>