? ?????? ???? ???? ??? ??? ????? ? ??? ??? ???? ? ????. ??? ????? ??? ??? ??? ??? ???? ?? ? ????. ? ??? ???? JavaScript? ???? ??? ??? ?????? ???? ??? ???? ???? ?? ??? ????? ??? ??? ??? ??? ??? ???? ?? ?????? ???? ?????.

??? ?? ?????? ?? ? ??? ??? ??? ?? JavaScript ??? ? ?? ? ? ????. ??? ??? ??? API? ???? ??? ?? ??? ?? ?????? ????? ?? ? ? ????.

??? ??? ???? ?????

??? ?? ??? ??? ????.

1. ?? ??? ?? ??? ??? ???? ????? scrollTrigger ??? ??????.
2. ??? ?? ???? .active ???? ??????.
3. CSS .active ???? ??????.

?? ??? ?? ? ? ?? ??? ???? ?? ??? ?? ?? ??? ???????.

 Scrolltrigger ( '. loader', {
  CB : ?? (el) {
    el.innerText = '?? ...'
    loadContent ()
  }
})

?????, ??? ??? ?????? ??? ??? API? ??? ?? ? ????.

?? ??? API

??? ??? API? ?? ?? ??? ?? ?? ??? ???? ?? ? ? ????. ?? ??? ???? ?? ??? ? ??????.

??? ??? ??? ??????

??, scrollTrigger ??? ???? ???? ?? ??? ?????.

 ?? scrolltrigger (selector) {
  els = document.querySelectorall (???);
  els = array.from (els);
  els.foreach (el => {
    addobserver (el);
  });
}
// ?? ScrollTrigger ( '. scroll-reveal');

???? addObserver ??? ???? ??? ???? ???? ??? ????.

 ?? scrolltrigger (selector) {
  els = document.querySelectorall (???);
  els = array.from (els);
  els.foreach (el => {
    addobserver (el);
  });
}
?? addObserver (el) {
    Let Observer = new intersectionObserver ((entries, observer) => {
      entries.foreach (entry => {
        if (EntrysInterSecting) {
          Entry.target.classlist.add ( 'Active');
          Observer.unobserve (Entry.target);
        }
      });
    });
  Observer.observe (el);
}
// ?? ScrollTrigger ( '. scroll-reveal');

?? ??? ?? ??? ???? .active ???? ?????. ?? ??? ??? ?? ??? ???? options ?? ??? ??? ? ????.

 ?? scrolltrigger (selector, ?? = {}) {
  els = document.querySelectorall (???);
  els = array.from (els);
  els.foreach (el => {
    addobserver (el, ??);
  });
}
?? addObserver (el, ??) {
  Let Observer = new intersectionObserver ((entries, observer) => {
    entries.foreach (entry => {
      if (EntrysInterSecting) {
        Entry.target.classlist.add ( 'Active');
        Observer.unobserve (Entry.target);
      }
    });
  }, ??);
  Observer.observe (el);
}
// ?? ScrollTrigger ( '. scroll-reveal', {
  rootmargin : '-200px'
});

?? ??? ?? ? ??? ??????. ???? ?? ?? ?? ?? :

 ?? scrolltrigger (selector, ?? = {}) {
  els = document.querySelectorall (???);
  els = array.from (els);
  els.foreach (el => {
    addobserver (el, ??);
  });
}
?? addObserver (el, ??) {
  Let Observer = new intersectionObserver ((entries, observer) => {
    entries.foreach (entry => {
      if (EntrysInterSecting) {
        if (Options.cb) {
          ?? .cb (el);
        } ? ??{
          Entry.target.classlist.add ( 'Active');
        }
        Observer.unobserve (Entry.target);
      }
    });
  }, ??);
  Observer.observe (el);
}
// ?? ScrollTrigger ( '. loader', {
  rootmargin : '-200px',
  CB : ?? (el) {
    el.innerText = '?? ...';
    settimeout (() => {
      el.innerText = '??? ???????! ';;
    }, 1000);
  }
});

????? ??? ???? ???? ?????.

 ?? scrolltrigger (selector, ?? = {}) {
  els = document.querySelectorall (???);
  els = array.from (els);
  els.foreach (el => {
    addobserver (el, ??);
  });
}
?? addObserver (el, ??) {
  if (! ( 'intersectionObserver')) {
    if (Options.cb) {
      ?? .cb (el);
    } ? ??{
      el.classlist.add ( 'Active');
    }
    ??;
  }
  Let Observer = new intersectionObserver ((entries, observer) => {
    entries.foreach (entry => {
      if (EntrysInterSecting) {
        if (Options.cb) {
          ?? .cb (el);
        } ? ??{
          Entry.target.classlist.add ( 'Active');
        }
        Observer.unobserve (Entry.target);
      }
    });
  }, ??);
  Observer.observe (el);
}
// ?? scrolltrigger ( '. Intro-text')? ?????.
Scrolltrigger ( '. Scroll-Reveal', {
  rootmargin : '-200px',
});
Scrolltrigger ( '. loader', {
  rootmargin : '-200px',
  CB : ?? (el) {
    el.innerText = '?? ...';
    settimeout (() => {
      el.innerText = '??? ???????! ';;
    }, 1000);
  }
});

?? ??? ?? ??? ??? ????? ??? ????? ???? ???? ???? ??????. ? ??? ??? ? ???? ??? ??? ????? ? ?????? ????.

? ??? ?? JavaScript? ??? ??? ?????? ??? ??? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!