What is this timer based on?

Question

JavaScript

Hello! There is such a page https://technopoint.ru/promo-page/Out_of_School_2019/ I would really like to understand how they implemented the timer.

Answer 1

Any plugin with similar functionality will do. The query "countdown timer js" will help. Some even have this design built in. Most have a well-written API, in which data like this is entered: count from today to the start of sales, which will take place in a month ... And he counts. Date ranges and other flexibilities are usually present.
UPD: this one is very similar ... more precisely, it is he ...

Answer 2

Most likely this is a custom solution. Of the alternatives, there is such a selection and library .