title: Is there something like the Tag property (.NET) in JavaScript?
body: <p>For example in VB.NET:</p>
  
  <pre><code>btnSend.Tag = "Hello"
  </code></pre>
  
  <p>Can I do something similar in JavaScript?</p>
  
  <pre><code>document.getElementById("btnSend").tag = "Hello"
  </code></pre>