How to make this clock ⏲️ work properly?

Question

I've been trying to figure out how to make a timer clock and write few codes, but console found some bug 🐛 in my code. I don't have any experience in coding. Please help me solve this.
https://code.sololearn.com/W97n1YEAk1GD/?ref=app

Answer 1

David D. I liked your code, it's cleaner than mine. But you misunderstood what I was saying.

I want to make a countdown timer like most of the e-commerce websites do, to show customer time remaining at the ending of the deal.
But for that purpose, I want to just edit my HTML field in the post editor and set a deadline. No one else can change it and work for different countries' visitors having different time zones. And also it should work on other posts.

Answer 2

Maybe you should use server countdown timer, which run a single timer for all the clients.
https://code.sololearn.com/W3AQzYF5QDIQ/?ref=app