Can array.splice() be called with one argument?
<p><a href="https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/splice" rel="nofollow">According to MDN</a>, I think, array.splice can take 1 argument:</p>

<blockquote>
  <p>If no howMany parameter is specified
  (second syntax above, which is a
  SpiderMonkey extension), all elements
  after index are removed.</p>
</blockquote>

<p>but it's not clear whether the one argument option is a SpiderMonkey extension (there's only one syntax example, which is confusing).</p>

<p>It works in Chrome and Firefox, but I don't know of the compatibility beyond that. Does anybody know definitively?</p>
