simple scripts used in my presentation and related to the conference if you're new to JavaScript, view the step-by-step in the PowerPoint / PDF file at https://drive.google.com/file/d/1vw7ZRTMBlbRdUSi6RaA3tK3yfKXBwIRl/view first, and for more detail, watch the video recording at https://drive.google.com/file/d/1_C1dMJS6-nGQz0IFH9v-MDVbGsv4XSv3/view then you'll be able to understand how to leverage the code in all the .js files