title: join method not working on array JAVASCRIPT
body: <p>I created this code that I draw an array, but today I'll explain what is this code because the problem is another. 
  I run a processing del'array "elaborazione", the problem is that when I want to remove the commas, using the join method does not work, the text remains the commas, how is it possible? What is wrong with this code?</p>
  
  <pre><code>for (i = 0; i &lt; count; i++) 
  {
     var opt = new Option();
     var elaborazione = v[i].split(";");
     elaborazione.splice(2,2);
     elaborazione.join(" ");
     alert("elaborazione =&gt; " + elaborazione);
     opt.innerHTML = elaborazione;
     select.add(opt);
  }
  </code></pre>