Tarayıcı JavaScript (jQuery...) en iyi animasyon ilerleyin çapraz

SORU

18 Ocak 2012, ÇARŞAMBA

Tarayıcı JavaScript (jQuery...) en iyi animasyon ilerleyin çapraz

Basit ve çapraz tarayıcı "üstüne gidin" animasyon bir bağlantı için başvurabilirim. arıyorum Moo, vb jQuery gibi bir JS Kütüphanesi gerektirir istemiyorum.

// jQuery Equivilant to convert to pure JS...
$('html, body').animate({scrollTop:0}, 400);

Bir kütüphane içine atlama önce JS 100% öğrenmiş biri için mükemmel bir durumda değilim. :(

CEVAP

18 Ocak 2012, ÇARŞAMBA

function scrollTo(element, to, duration) {
    if (duration < 0) return;
    var difference = to - element.scrollTop;
    var perTick = difference / duration * 10;

    setTimeout(function() {
        element.scrollTop = element.scrollTop   perTick;
        if (element.scrollTop === to) return;
        scrollTo(element, to, duration - 10);
    }, 10);
}

Demo:

function runScroll() {
  scrollTo(document.body, 0, 600);
}
var scrollme;
scrollme = document.querySelector("#scrollme");
scrollme.addEventListener("click",runScroll,false)

function scrollTo(element, to, duration) {
  if (duration < 0) return;
  var difference = to - element.scrollTop;
  var perTick = difference / duration * 10;

  setTimeout(function() {
    element.scrollTop = element.scrollTop   perTick;
    if (element.scrollTop == to) return;
    scrollTo(element, to, duration - 10);
  }, 10);
}

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</p>
<button id=scrollme type="button">To the top</button>