title: How to initialize a jagged array in JavaScript?
body: <p>Is it possible to have a jagged array in JavaScript?</p>
  
  <p>Here is the format of the data I want to store in a jagged array:</p>
  
  <pre><code>(key)(value1, value2, value3)
  </code></pre>
  
  <p>Can I put this in a jagged array?</p>