g> { <span class="type"><a href="dataTypes.html#datatypes_number">number</a></span> }</li>
</ul>
<p>如果可选参数包含默认值, 则会以 &quot;=&quot; 标注:</p>
<ul>
<li><strong>[ delay = 0 ]</strong> { <span class="type"><a href="dataTypes.html#datatypes_number">number</a></span> }</li>
</ul>
<p>详见下述 <a href="#documentation_参数默认值">参数默认值</a></p>
<h3>参数默认值<span><a class="mark" href="#documentation_10" id="documentation_10">#</a></span></h3>
<h4>device.vibrate(t