e="margin-bottom: 0px;margin-top: 0px;"><p>Tells if <code>this</code> regular expression matches a substring of String <code>s</code>.</p>
<p>This function expects <code>pos</code> and <code>len</code> to describe a valid substring of
<code>s</code>, or else the result is unspecified. To get more robust behavior,
<code>this.<a href="#match">match</a>(s.substr(pos,len))</code> can be used instead.</p>
<p>This method modifies the internal state.</p>
<p>If <code>s</code> is null, the result is unspecified.</p>