What is the usage of javascript scrollTimeout?

Question

I just encounter scrollTimeout and couldn't figure the usage of it, I can't find any useful result in Google too! isn't there any refernece for all javascript functions ?

Answer 1

setTimeout returns an id, they check to see if it is still active and cancel it.

var onScrollVisitorsBlock = function () {
        clearTimeout(scrollTimeout);
        scrollTimeout = setTimeout(function () {
        ....

This way, the function is not continuously executing.