tps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set/clear">https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set/clear</a>

</dd>
</div>
<div id="contains,JsSet,JsObject">
<dt><pre><span class="Keyword">func</span> <a href="#contains%2CJsSet%2CJsObject"><span class="Identifier">contains</span></a><span class="Other">(</span><span class="Identifier">this</span><span class="Other">:</span> <a href="jssets.html#JsSet"><span class="Identifier">JsSet<