title: can the alt attribute be used for an input type button
body: <p>I wanna ask about the alt attribute in an input tag.
  As I found on many sites, the alt attribute is used when we have an input with type image.</p>
  
  <p>1/ Can it be used for an input type button?</p>
  
  <pre><code>&lt;input type="button" alt="myAction.myMethod" /&gt;
  </code></pre>
  
  <p>2/ what is its meaning?</p>