title: JavaScript - wait until element loaded on website using Chrome extension
body: <p>I'm developing a Chrome extension that <strong>clicks elements on a website,</strong> but some of the elements appear after the check and the code doesn't work. I need to make the <strong>function wait until the selected element is loaded</strong>.</p>
  <p>And <strong>NOT wait in delays in seconds</strong> like on <code>setTimeout</code> function.</p>
  <p>How can I do it?</p>