如何添加缓动/动画/慢慢移动到此功能? 此刻它只是跳跃。 现在它应该用动画移动到“锚点”。
<script type='text/javascript'>
setTimeout("window.scrollBy(0,270);",3000);
</script>
答案 0 :(得分:39)
也可以使用请求动画帧的普通javascript ..
// first add raf shim
// http://www.paulirish.com/2011/requestanimationframe-for-smart-animating/
window.requestAnimFrame = (function(){
return window.requestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.mozRequestAnimationFrame ||
function( callback ){
window.setTimeout(callback, 1000 / 60);
};
})();
// main function
function scrollToY(scrollTargetY, speed, easing) {
// scrollTargetY: the target scrollY property of the window
// speed: time in pixels per second
// easing: easing equation to use
var scrollY = window.scrollY,
scrollTargetY = scrollTargetY || 0,
speed = speed || 2000,
easing = easing || 'easeOutSine',
currentTime = 0;
// min time .1, max time .8 seconds
var time = Math.max(.1, Math.min(Math.abs(scrollY - scrollTargetY) / speed, .8));
// easing equations from https://github.com/danro/easing-js/blob/master/easing.js
var PI_D2 = Math.PI / 2,
easingEquations = {
easeOutSine: function (pos) {
return Math.sin(pos * (Math.PI / 2));
},
easeInOutSine: function (pos) {
return (-0.5 * (Math.cos(Math.PI * pos) - 1));
},
easeInOutQuint: function (pos) {
if ((pos /= 0.5) < 1) {
return 0.5 * Math.pow(pos, 5);
}
return 0.5 * (Math.pow((pos - 2), 5) + 2);
}
};
// add animation loop
function tick() {
currentTime += 1 / 60;
var p = currentTime / time;
var t = easingEquations[easing](p);
if (p < 1) {
requestAnimFrame(tick);
window.scrollTo(0, scrollY + ((scrollTargetY - scrollY) * t));
} else {
console.log('scroll done');
window.scrollTo(0, scrollTargetY);
}
}
// call it once to get started
tick();
}
// scroll it!
scrollToY(0, 1500, 'easeInOutQuint');
答案 1 :(得分:5)
改编自this answer:
function scrollBy(distance, duration) {
var initialY = document.body.scrollTop;
var y = initialY + distance;
var baseY = (initialY + y) * 0.5;
var difference = initialY - baseY;
var startTime = performance.now();
function step() {
var normalizedTime = (performance.now() - startTime) / duration;
if (normalizedTime > 1) normalizedTime = 1;
window.scrollTo(0, baseY + difference * Math.cos(normalizedTime * Math.PI));
if (normalizedTime < 1) window.requestAnimationFrame(step);
}
window.requestAnimationFrame(step);
}
这样可以让您顺畅地滚动指定的距离。
答案 2 :(得分:3)
对于在2019年查看此问题的任何人:现在可以通过使用本机完成
window.scrollBy({
top: 0,
left: 270,
behavior: 'smooth'
});
此功能在Edge和Safari之外的所有主要浏览器中均有效。参见https://developer.mozilla.org/en-US/docs/Web/API/Window/scrollBy#Examples
答案 3 :(得分:2)
jQuery的另一个例子,使用缓动插件来获得一些不错的效果:
http://tympanus.net/codrops/2010/06/02/smooth-vertical-or-horizontal-page-scrolling-with-jquery/
答案 4 :(得分:2)
<script type="text/javascript">
(function($){
$(document).ready(function(){
setTimeout(function() {
$('body').scrollTo( '300px', 2500 );
}, 3000);
});
}(jQuery));
</script>
感谢大家!!!
答案 5 :(得分:1)
答案 6 :(得分:0)
使用jQuery可以更容易,也许使用scrollto插件。 http://flesler.blogspot.se/2007/10/jqueryscrollto.html
考虑一个解决方案:
<script type='text/javascript' src='js/jquery.1.7.2.min.js'></script>
<script type='text/javascript' src='js/jquery.scrollTo-min.js'></script>
<script type='text/javascript' src='js/jquery.easing.1.3.js'></script><!-- only for other easings than swing or linear -->
<script type='text/javascript'>
$(document).ready(function(){
setTimeout(function() {
$('html,body').scrollTo( {top:'30%', left:'0px'}, 800, {easing:'easeInBounce'} );
}, 3000);
});
</script>
当然你需要编写脚本。
有关工作示例,请参阅http://jsfiddle.net/7bFAF/2/
答案 7 :(得分:0)
这将起作用,假设您需要平滑滚动到页面顶部。
const scrollToTop = () => {
const c = document.documentElement.scrollTop || document.body.scrollTop;
if (c > 0) {
window.requestAnimationFrame(scrollToTop);
window.scrollTo(0, c - c / 8);
}
};
答案 8 :(得分:-3)
使用此功能,您的问题将得到解决
animate(document.documentElement, 'scrollTop', 0, 200);
由于