Elementor > Custom Code 

Step 1: From the dashboard click Elementor > Custom Code

Step 2: Click ADD NEW CUSTOM CODE

Step 3: Name the custom code

Step 4: Set the location of custom code to – End

Step 5: Add Tag<script> Tag

Add eventListener ‘onload’ on every script

Step 6: Add the eventListener

Step 6: Set your desired publish settings

Step 7: Save & Close