Find DOM element with jQuery

[Spike-86]

Hello, Varya. Thank you for this tool, it's quite cool. But I have one question. I want to create a demo page for my project with js animation (pop-up, spinner, datepicker, alert, and others). I include <script> tags with libraries and my custom js file into gulp files option (extraHead). Then I create DOM element at the page with a markup in SCSS file. In my custom file I call console.log($('myTestDom')), but jQuery doesn't find it. Could you help me please? Thank you in advance.