延迟加载javascript或3秒后加载

The javascript is loading an iframe. https://jsfiddle.net/uzairm/zc5ge27v/

<div class="editorskit-no-mobile">
<script src="//idx.diversesolutions.com/scripts/controls/Remote-Frame.aspx?MasterAccountID=1606&amp;SearchSetupID=41&amp;LinkID=474907&amp;Height=2000"></script>
</div> 

我正在尝试延迟加载它。我尝试了异步和延迟属性。此外,动态创建它,但没有用。任何的想法? 我只想延迟加载或在3秒后加载它。