我正在寻找一个简单的,跨浏览器“滚动到顶部”的动画,我可以应用到一个链接。我不想需要一个JS库,如jQuery/Moo等。
// jQuery Equivilant to convert to pure JS...
$('html, body').animate({scrollTop:0}, 400);
对于那些在跳进图书馆之前应该100%学习JS的人来说,我是一个完美的例子。:(
我正在寻找一个简单的,跨浏览器“滚动到顶部”的动画,我可以应用到一个链接。我不想需要一个JS库,如jQuery/Moo等。
// jQuery Equivilant to convert to pure JS...
$('html, body').animate({scrollTop:0}, 400);
对于那些在跳进图书馆之前应该100%学习JS的人来说,我是一个完美的例子。:(
一件容易的事。
var scrollIt = function(time) {
// time = scroll time in ms
var start = new Date().getTime(),
scroll = document.documentElement.scrollTop + document.body.scrollTop,
timer = setInterval(function() {
var now = Math.min(time,(new Date().getTime())-start)/time;
document.documentElement.scrollTop
= document.body.scrollTop = (1-time)/start*scroll;
if( now == 1) clearTimeout(timer);
},25);
}
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);
}
演示:
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); } <p>Very long page.Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page.Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page.Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page.Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page.Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. Very long page. </p> <button id=scrollme type="button">To the top</button>
我修改了TimWolla的答案,使用二次输入-输出缓和(更流畅一点:)。下面是一个正在运行的示例:在jsFiddle上。这里提供了缓动函数:Robert Penner的缓动函数
document.getElementsByTagName('button')[0].onclick = function () {
scrollTo(document.body, 0, 1250);
}
function scrollTo(element, to, duration) {
var start = element.scrollTop,
change = to - start,
increment = 20;
var animateScroll = function(elapsedTime) {
elapsedTime += increment;
var position = easeInOut(elapsedTime, start, change, duration);
element.scrollTop = position;
if (elapsedTime < duration) {
setTimeout(function() {
animateScroll(elapsedTime);
}, increment);
}
};
animateScroll(0);
}
function easeInOut(currentTime, start, change, duration) {
currentTime /= duration / 2;
if (currentTime < 1) {
return change / 2 * currentTime * currentTime + start;
}
currentTime -= 1;
return -change / 2 * (currentTime * (currentTime - 2) - 1) + start;
}
只做了这个javascript解决方案下面。
简单的用法:
EPPZScrollTo.scrollVerticalToElementById('wrapper', 0);
引擎对象(你可以摆弄过滤器,fps值):
/**
*
* Created by Borbás Geri on 12/17/13
* Copyright (c) 2013 eppz! development, LLC.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
var EPPZScrollTo =
{
/**
* Helpers.
*/
documentVerticalScrollPosition: function()
{
if (self.pageYOffset) return self.pageYOffset; // Firefox, Chrome, Opera, Safari.
if (document.documentElement && document.documentElement.scrollTop) return document.documentElement.scrollTop; // Internet Explorer 6 (standards mode).
if (document.body.scrollTop) return document.body.scrollTop; // Internet Explorer 6, 7 and 8.
return 0; // None of the above.
},
viewportHeight: function()
{ return (document.compatMode === "CSS1Compat") ? document.documentElement.clientHeight : document.body.clientHeight; },
documentHeight: function()
{ return (document.height !== undefined) ? document.height : document.body.offsetHeight; },
documentMaximumScrollPosition: function()
{ return this.documentHeight() - this.viewportHeight(); },
elementVerticalClientPositionById: function(id)
{
var element = document.getElementById(id);
var rectangle = element.getBoundingClientRect();
return rectangle.top;
},
/**
* Animation tick.
*/
scrollVerticalTickToPosition: function(currentPosition, targetPosition)
{
var filter = 0.2;
var fps = 60;
var difference = parseFloat(targetPosition) - parseFloat(currentPosition);
// Snap, then stop if arrived.
var arrived = (Math.abs(difference) <= 0.5);
if (arrived)
{
// Apply target.
scrollTo(0.0, targetPosition);
return;
}
// Filtered position.
currentPosition = (parseFloat(currentPosition) * (1.0 - filter)) + (parseFloat(targetPosition) * filter);
// Apply target.
scrollTo(0.0, Math.round(currentPosition));
// Schedule next tick.
setTimeout("EPPZScrollTo.scrollVerticalTickToPosition("+currentPosition+", "+targetPosition+")", (1000 / fps));
},
/**
* For public use.
*
* @param id The id of the element to scroll to.
* @param padding Top padding to apply above element.
*/
scrollVerticalToElementById: function(id, padding)
{
var element = document.getElementById(id);
if (element == null)
{
console.warn('Cannot find element with id \''+id+'\'.');
return;
}
var targetPosition = this.documentVerticalScrollPosition() + this.elementVerticalClientPositionById(id) - padding;
var currentPosition = this.documentVerticalScrollPosition();
// Clamp.
var maximumScrollPosition = this.documentMaximumScrollPosition();
if (targetPosition > maximumScrollPosition) targetPosition = maximumScrollPosition;
// Start animation.
this.scrollVerticalTickToPosition(currentPosition, targetPosition);
}
};
没有JQuery代码,希望这将帮助你。
function TopscrollTo() {
if(window.scrollY!=0)
{
setTimeout(function() {
window.scrollTo(0,window.scrollY-30);
TopscrollTo();
}, 100);
}
}
在按钮单击事件或任何其他你想要的元素/事件上调用这个TopscrollTo()函数。
我修改了@TimWolla的代码,添加了更多的选项和一些移动功能。 另外,增加了对document.body.scrollTop和document.documentElement.scrollTop的跨浏览器支持
// scroll to top
scrollTo(0, 1000);
// Element to move, time in ms to animate
function scrollTo(element, duration) {
var e = document.documentElement;
if(e.scrollTop===0){
var t = e.scrollTop;
++e.scrollTop;
e = t+1===e.scrollTop--?e:document.body;
}
scrollToC(e, e.scrollTop, element, duration);
}
// Element to move, element or px from, element or px to, time in ms to animate
function scrollToC(element, from, to, duration) {
if (duration <= 0) return;
if(typeof from === "object")from=from.offsetTop;
if(typeof to === "object")to=to.offsetTop;
scrollToX(element, from, to, 0, 1/duration, 20, easeOutCuaic);
}
function scrollToX(element, xFrom, xTo, t01, speed, step, motion) {
if (t01 < 0 || t01 > 1 || speed<= 0) {
element.scrollTop = xTo;
return;
}
element.scrollTop = xFrom - (xFrom - xTo) * motion(t01);
t01 += speed * step;
setTimeout(function() {
scrollToX(element, xFrom, xTo, t01, speed, step, motion);
}, step);
}
function easeOutCuaic(t){
t--;
return t*t*t+1;
}
http://jsfiddle.net/forestrf/tPQSv/
简化版: http://jsfiddle.net/forestrf/tPQSv/139/
// c = element to scroll to or top position in pixels
// e = duration of the scroll in ms, time scrolling
// d = (optative) ease function. Default easeOutCuaic
function scrollTo(c,e,d){d||(d=easeOutCuaic);var a=document.documentElement;if(0===a.scrollTop){var b=a.scrollTop;++a.scrollTop;a=b+1===a.scrollTop--?a:document.body}b=a.scrollTop;0>=e||("object"===typeof b&&(b=b.offsetTop),"object"===typeof c&&(c=c.offsetTop),function(a,b,c,f,d,e,h){function g(){0>f||1<f||0>=d?a.scrollTop=c:(a.scrollTop=b-(b-c)*h(f),f+=d*e,setTimeout(g,e))}g()}(a,b,c,0,1/e,20,d))};
function easeOutCuaic(t){
t--;
return t*t*t+1;
}
看来已经有很多解决方案了。不管怎样,这是另一个,使用简化方程。
// 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 || document.documentElement.scrollTop,
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 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');
我看到上面大多数/所有的帖子都是用javascript搜索按钮的。这是有效的,只要你只有一个按钮。我建议在按钮内定义一个“onclick”元素。然后,“onclick”将调用该函数,使其滚动。
如果你这样做,你可以使用多个按钮,只要按钮看起来像这样:
<button onclick="scrollTo(document.body, 0, 1250)">To the top</button>
这是一种基于上述答案的跨浏览器方法
function scrollTo(to, duration) {
if (duration < 0) return;
var scrollTop = document.body.scrollTop + document.documentElement.scrollTop;
var difference = to - scrollTop;
var perTick = difference / duration * 10;
setTimeout(function() {
scrollTop = scrollTop + perTick;
document.body.scrollTop = scrollTop;
document.documentElement.scrollTop = scrollTop;
if (scrollTop === to) return;
scrollTo(to, duration - 10);
}, 10);
}
基于这里的一些答案,但使用了一些简单的数学,使用正弦曲线进行平稳过渡:
scrollTo(element, from, to, duration, currentTime) {
if (from <= 0) { from = 0;}
if (to <= 0) { to = 0;}
if (currentTime>=duration) return;
let delta = to-from;
let progress = currentTime / duration * Math.PI / 2;
let position = delta * (Math.sin(progress));
setTimeout(() => {
element.scrollTop = from + position;
this.scrollTo(element, from, to, duration, currentTime + 10);
}, 10);
}
用法:
// Smoothly scroll from current position to new position in 1/2 second.
scrollTo(element, element.scrollTop, element.scrollTop + 400, 500, 0);
注:注意ES6风格
纯javascript滚动类
这是一个老问题,但我认为我可以用一些花哨的东西和更多的选项来回答,如果你想对动画有更多的控制。
跨浏览器 复制/粘贴就绪解决方案(你只需要CSS和JS) 3种动画模式:["normal"|"linear"|false] 自定义您的动画与可用的设置-使其时髦或流畅 双击可跳过动画 每一次点击都会增加初始速度 向下拖动滚动条来停止滚动动画 通过鼠标滚轮向下停止滚动动画 动画按钮淡出滚动
这里是一个纯JS类来照顾你的滚动:
参见codepen的演示或到底部运行sinpet
// ------------------- USE EXAMPLE ---------------------
// *Set options
var options = {
'showButtonAfter': 200, // show button after scroling down this amount of px
'animate': "linear", // [false|normal|linear] - for false no aditional settings are needed
'normal': { // applys only if [animate: normal] - set scroll loop distanceLeft/steps|ms
'steps': 20, // the more steps per loop the slower animation gets
'ms': 10 // the less ms the quicker your animation gets
},
'linear': { // applys only if [animate: linear] - set scroll px|ms
'px': 30, // the more px the quicker your animation gets
'ms': 10 // the less ms the quicker your animation gets
},
};
// *Create new Scroller and run it.
var scroll = new Scroller(options);
scroll.init();
完整的类脚本+使用示例:
// PURE JAVASCRIPT (OOP) function Scroller(options) { this.options = options; this.button = null; this.stop = false; } Scroller.prototype.constructor = Scroller; Scroller.prototype.createButton = function() { this.button = document.createElement('button'); this.button.classList.add('scroll-button'); this.button.classList.add('scroll-button--hidden'); this.button.textContent = "^"; document.body.appendChild(this.button); } Scroller.prototype.init = function() { this.createButton(); this.checkPosition(); this.click(); this.stopListener(); } Scroller.prototype.scroll = function() { if (this.options.animate == false || this.options.animate == "false") { this.scrollNoAnimate(); return; } if (this.options.animate == "normal") { this.scrollAnimate(); return; } if (this.options.animate == "linear") { this.scrollAnimateLinear(); return; } } Scroller.prototype.scrollNoAnimate = function() { document.body.scrollTop = 0; document.documentElement.scrollTop = 0; } Scroller.prototype.scrollAnimate = function() { if (this.scrollTop() > 0 && this.stop == false) { setTimeout(function() { this.scrollAnimate(); window.scrollBy(0, (-Math.abs(this.scrollTop()) / this.options.normal['steps'])); }.bind(this), (this.options.normal['ms'])); } } Scroller.prototype.scrollAnimateLinear = function() { if (this.scrollTop() > 0 && this.stop == false) { setTimeout(function() { this.scrollAnimateLinear(); window.scrollBy(0, -Math.abs(this.options.linear['px'])); }.bind(this), this.options.linear['ms']); } } Scroller.prototype.click = function() { this.button.addEventListener("click", function(e) { e.stopPropagation(); this.scroll(); }.bind(this), false); this.button.addEventListener("dblclick", function(e) { e.stopPropagation(); this.scrollNoAnimate(); }.bind(this), false); } Scroller.prototype.hide = function() { this.button.classList.add("scroll-button--hidden"); } Scroller.prototype.show = function() { this.button.classList.remove("scroll-button--hidden"); } Scroller.prototype.checkPosition = function() { window.addEventListener("scroll", function(e) { if (this.scrollTop() > this.options.showButtonAfter) { this.show(); } else { this.hide(); } }.bind(this), false); } Scroller.prototype.stopListener = function() { // stop animation on slider drag var position = this.scrollTop(); window.addEventListener("scroll", function(e) { if (this.scrollTop() > position) { this.stopTimeout(200); } else { //... } position = this.scrollTop(); }.bind(this, position), false); // stop animation on wheel scroll down window.addEventListener("wheel", function(e) { if (e.deltaY > 0) this.stopTimeout(200); }.bind(this), false); } Scroller.prototype.stopTimeout = function(ms) { this.stop = true; // console.log(this.stop); // setTimeout(function() { this.stop = false; console.log(this.stop); // }.bind(this), ms); } Scroller.prototype.scrollTop = function() { var curentScrollTop = document.documentElement.scrollTop || document.body.scrollTop; return curentScrollTop; } // ------------------- USE EXAMPLE --------------------- // *Set options var options = { 'showButtonAfter': 200, // show button after scroling down this amount of px 'animate': "normal", // [false|normal|linear] - for false no aditional settings are needed 'normal': { // applys only if [animate: normal] - set scroll loop distanceLeft/steps|ms 'steps': 20, // the more steps per loop the slower animation gets 'ms': 10 // the less ms the quicker your animation gets }, 'linear': { // applys only if [animate: linear] - set scroll px|ms 'px': 30, // the more px the quicker your animation gets 'ms': 10 // the less ms the quicker your animation gets }, }; // *Create new Scroller and run it. var scroll = new Scroller(options); scroll.init(); /* CSS */ @import url(https://fonts.googleapis.com/css?family=Open+Sans); body { font-family: 'Open Sans', sans-serif; font-size: 1.2rem; line-height: 2rem; height: 100%; position: relative; padding: 0 25%; } .scroll-button { font-size: 1.2rem; line-height: 2rem; padding: 10px; width: 50px; height: 50px; background: black; color: white; border-radius: 50%; position: fixed; right: 20px; bottom: 20px; visibility: visible; filter: alpha(opacity=50); filter: progid: DXImageTransform.Microsoft.Alpha(Opacity=50); opacity: 0.5; cursor: pointer; transition: all 1.2s; -webkit-transition: all 1.2s; -moz-transition: all 1.2s; -ms-transition: all 1.2s; -o-transition: all 1.2s; } .scroll-button:hover { filter: alpha(opacity=100); filter: progid: DXImageTransform.Microsoft.Alpha(Opacity=100); opacity: 1; } .scroll-button--hidden { filter: alpha(opacity=0); filter: progid: DXImageTransform.Microsoft.Alpha(Opacity=0); opacity: 0; visibility: hidden; } <!-- HTML --> <h1>Scroll down by 200px for button to appear</h1> <ul> <li>Cross-browser</li> <li>Copy/Paste solution</li> <li>3 animate modes: <b>["normal"|"linear"|false]</b></li> <li>Customize your aniamtion with aveilable settings - make it snapy or fluent</li> <li>Double click to skip animation</li> <li>Every next single click adds initial speed</li> <li>Stop scroll animation by draging down the scroll bar</li> <li>Stop scroll animation by mouse wheel down</li> <li>Animated button fade-in-out on scroll</li> </ul> <br /> <br /> <pre> // ------------------- USE EXAMPLE --------------------- // *Set options var options = { 'showButtonAfter': 200, // show button after scroling down this amount of px 'animate': "normal", // [false|normal|linear] - for false no aditional settings are needed 'normal': { // applys only if [animate: normal] - set scroll loop distanceLeft/steps|ms 'steps': 20, // the more steps the slower animation gets 'ms': 20 // the less ms the quicker your animation gets }, 'linear': { // applys only if [animate: linear] - set scroll px|ms 'px': 55, // the more px the quicker your animation gets 'ms': 10 // the less ms the quicker your animation gets }, }; // *Create new Scroller and run it. var scroll = new Scroller(options); scroll.init(); </pre> <br /> <br /> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Quae molestiae illo nobis quo autem molestias voluptatum quam, amet ipsum debitis, iure animi illum soluta eaque qui perspiciatis harum, sequi nesciunt.</span><span>Quisquam nesciunt aspernatur a possimus pariatur enim architecto. Hic aperiam sit repellat doloremque vel est soluta et assumenda dolore, sint sapiente porro, quam impedit. Sint praesentium quas excepturi, voluptatem dicta!</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Voluptate, porro nisi molestias minima corrupti tempore, dolorum fugiat ipsam dicta doloremque accusamus atque consequatur iusto natus, mollitia distinctio odit dolor tempora.</span><span>Perferendis a in laudantium accusantium, dolorum eius placeat velit porro similique, eum cumque veniam neque aspernatur architecto suscipit rem laboriosam voluptates laborum? Voluptates tempora necessitatibus animi nostrum quod, maxime odio.</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Nihil accusantium, itaque corporis repellat pariatur soluta officia perspiciatis in reprehenderit facere, incidunt saepe excepturi. Inventore atque ex illo, ipsam at deserunt.</span><span>Laborum inventore officia, perspiciatis cumque magni consequatur iste accusantium soluta, nesciunt blanditiis voluptatibus adipisci laudantium mollitia minus quia necessitatibus voluptates. Minima unde quos impedit necessitatibus aspernatur minus maiores ipsa eligendi!</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Voluptate nesciunt, explicabo similique, quo maxime modi, aliquid, voluptatibus repellendus dolorum placeat mollitia ea dicta quia laboriosam alias dignissimos ipsam tenetur. Nulla.</span><span>Vel maiores necessitatibus odio voluptate debitis, error in accusamus nulla, eum, nemo et ea commodi. Autem numquam at, consequatur temporibus. Mollitia placeat nobis blanditiis impedit distinctio! Ad, incidunt fugiat sed.</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Ipsam voluptatum, odio quam omnis iste laudantium, itaque architecto, eos ullam debitis delectus sapiente nemo autem reprehenderit. Dolorem quidem facere ipsam! Nisi.</span><span>Vitae quaerat modi voluptatibus ratione numquam? Sapiente aliquid officia pariatur quibusdam aliquam id expedita non recusandae, cumque deserunt asperiores. Corrupti et doloribus aspernatur ipsum asperiores, ipsa unde corporis commodi reiciendis?</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Minima adipisci minus iste, nesciunt itaque quisquam quidem voluptatum assumenda rerum aliquid, excepturi voluptatem tempora. Possimus ratione alias a error vel, rem.</span><span>Officia esse error accusantium veritatis ad, et sit animi? Recusandae mollitia odit tenetur ad cumque maiores eligendi blanditiis nobis hic tempora obcaecati consequatur commodi totam, debitis, veniam, ducimus molestias ut.</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Obcaecati quibusdam, tempora cupiditate quaerat tempore ullam delectus voluptates optio eum placeat provident consequatur iure reprehenderit vero quae sapiente architecto earum nemo.</span><span>Quis molestias sint fuga doloribus, necessitatibus nulla. Esse ipsa, itaque asperiores. Tempora a sequi nobis cumque incidunt aspernatur, pariatur rem voluptatibus. Atque veniam magnam, ea laudantium ipsum reprehenderit sapiente repellendus.</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Minima, pariatur at explicabo aliquid repudiandae vero eum quasi totam voluptates iusto unde ad repellendus ipsam et voluptatem hic adipisci! Vero, nobis!</span><span>Consequatur eligendi quo quas omnis architecto dolorum aperiam doloremque labore, explicabo enim incidunt vitae saepe, quod soluta illo odit provident amet beatae quasi animi. Similique nostrum molestiae animi corrupti qui?</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Molestias quis, tempora laborum incidunt qui fuga adipisci doloremque iusto commodi vitae est, nemo iure placeat ut sit optio, consequuntur voluptas impedit.</span><span>Eos officiis, hic esse unde eaque, aut tenetur voluptate quam sint vel exercitationem totam dolor odio soluta illo praesentium non corrupti! Consequuntur velit, mollitia excepturi. Minus, veniam accusantium! Aliquam, ea!</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Reprehenderit quis reiciendis veritatis expedita velit vitae amet magni sunt rerum in blanditiis aut tempore quia fugiat, voluptates officia quaerat quam id.</span><span>Sapiente tempore repudiandae, quae doloremque ullam odio quia ea! Impedit atque, ipsa consequatur quis obcaecati voluptas necessitatibus, cupiditate sunt amet ab modi illum inventore, a dolor enim similique architecto est!</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Itaque non aliquam, sit illo quas deserunt esse nobis reprehenderit quidem fuga beatae eligendi reiciendis omnis qui repellat velit earum blanditiis possimus.</span><span>Provident aspernatur ducimus, illum beatae debitis vitae non dolorum rem officia nostrum natus accusantium perspiciatis ad soluta maiores praesentium eveniet qui hic quis at quaerat ea perferendis. Ut, aut, natus.</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Ratione corrupti quibusdam, sed hic veniam. Perspiciatis ex, quod architecto natus autem totam at commodi excepturi maxime pariatur corporis, veritatis vero, praesentium.</span><span>Nesciunt suscipit, nobis eos perferendis ex quaerat inventore nihil qui magnam saepe rerum velit reiciendis ipsam deleniti ducimus eligendi odio eius minima vero, nisi voluptates amet eaque, iste, labore laudantium.</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Illo, voluptas accusantium ad omnis velit distinctio! Adipisci magnam nihil nostrum molestiae rem dolores, ut ad nemo, dolor quos itaque maiores quaerat!</span><span>Quia ad suscipit reprehenderit vitae inventore eius non culpa maiores omnis sit obcaecati vel placeat quibusdam, ipsa exercitationem nam odit, magni nobis. Quam quas, accusamus expedita molestiae asperiores eaque ex?</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Rerum explicabo doloribus nihil iusto quasi vel expedita dignissimos amet mollitia, temporibus aut atque architecto assumenda dolorum nam velit deserunt totam numquam.</span><span>Ab perferendis labore, quae. Quidem architecto quo officia deserunt ea doloribus libero molestias id nisi perferendis eum porro, quibusdam! Odit aliquid placeat rem aut officia minus sit esse eos obcaecati!</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Eligendi nostrum repellendus placeat, unde aperiam. Fuga, voluptas, minima. Debitis nemo ducimus itaque laboriosam error quaerat reprehenderit quo animi incidunt. Nulla, quis!</span><span>Explicabo assumenda dicta ratione? Tempora commodi asperiores, explicabo doloremque eius quia impedit possimus architecto sit nemo odio eum fuga minima dolor iste mollitia sequi dolorem perspiciatis unde quisquam laborum soluta.</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Veniam officia corporis, reiciendis laudantium, voluptate voluptates necessitatibus assumenda, delectus quisquam velit deserunt! Reprehenderit, vel quaerat accusantium nesciunt libero animi. Sequi, eveniet?</span><span>Animi natus pariatur porro, alias, veniam aut est tempora adipisci molestias harum modi cumque assumenda enim! Expedita eveniet autem illum rerum nostrum ipsum alias neque aut, dolorum impedit pariatur non?</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Quis aliquid rerum, odio veniam ipsam ad officia quos repellat ex aperiam voluptatum optio est animi possimus minus. Sapiente voluptates amet dolorem.</span><span>Illo necessitatibus similique asperiores inventore ut cumque nihil assumenda debitis explicabo rerum, dolorum molestiae culpa accusantium. Nisi doloremque optio provident blanditiis, eum ipsam asperiores, consequatur aliquam vel sit mollitia sunt.</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Enim, totam harum perferendis. Minus ea perferendis laboriosam, iste, qui corrupti, quas veritatis omnis officiis animi fuga perspiciatis impedit! Error, harum, voluptas.</span><span>Omnis laborum, cum mollitia facilis ipsa unde distinctio maxime nesciunt illum perspiciatis ut officiis, eligendi numquam dolorem quod modi ipsam est rerum perferendis repellendus totam. Maxime excepturi culpa alias labore.</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Impedit deleniti, odit sit consequatur dolorum omnis repellendus, alias vel ullam numquam. Nostrum obcaecati hic, possimus delectus nam atque aliquid explicabo cum.</span><span>Explicabo tenetur minima consequatur, aliquam, laudantium non consequuntur facilis sint, suscipit debitis ex atque mollitia magni quod repellat ratione dolorum excepturi molestiae cumque iusto eos unde? Voluptatum dolores, porro provident!</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. At laboriosam fuga aperiam eveniet, obcaecati esse, nulla porro iure molestiae praesentium sint fugiat ea voluptate suscipit voluptates mollitia, voluptatibus. Autem, non.</span><span>Numquam velit culpa tempora ratione ipsum minus modi in? Nisi reiciendis, voluptate voluptatem maxime repellat quae odio, repellendus aliquid laborum dolorem. Labore, fuga ea minima explicabo quae voluptatum necessitatibus, similique.</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Quasi, rerum dolorum nemo error fugiat ut, modi, architecto libero maxime laborum repellendus doloribus neque aperiam adipisci quaerat obcaecati deserunt consequuntur amet!</span><span>Sint, assumenda nisi obcaecati doloremque iste. Perspiciatis accusantium, distinctio impedit cum esse recusandae sunt. Officiis culpa dolore eius, doloribus natus, dolorum excepturi vitae fugiat ullam provident harum! Suscipit, assumenda, harum.</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Odit, nihil tenetur tempore eligendi qui nesciunt consequatur delectus accusantium consectetur ipsa, nulla doloribus dolores rerum corporis, laborum, laboriosam hic mollitia repellat.</span><span>Ab deleniti vitae blanditiis quod tenetur! Voluptatem temporibus ab eaque quis? Quis odio aliquid harum temporibus totam, ipsa eius iusto fugiat enim in, quibusdam molestiae aliquam consequatur nulla, consequuntur sint.</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Illum odit praesentium quos, earum nesciunt laudantium illo tempora eligendi, porro doloremque mollitia neque aperiam inventore nam maxime dolor labore aspernatur molestias.</span><span>Voluptatibus provident hic cupiditate placeat, ut reprehenderit nisi eum, dolores ad sed quis. Doloribus molestiae, quae rem odit expedita soluta, facilis animi corporis velit ut in, recusandae harum laboriosam veritatis.</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Incidunt repudiandae molestias magnam delectus veritatis labore, corporis dicta officia quos, ad corrupti odit! Ad hic officia maxime eveniet consectetur similique adipisci!</span><span>Quia at, nesciunt aliquid delectus ex alias voluptas maxime hic esse. Incidunt, laborum quos mollitia dolores et! Voluptas commodi asperiores, fugit quidem quis corporis, a eaque, animi, autem deserunt repellendus.</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Sequi quas, voluptas hic minima inventore optio, id quidem placeat necessitatibus omnis voluptatibus vitae mollitia tempora consequuntur consequatur, illo facilis accusamus illum.</span><span>Voluptates consequuntur ipsam odit. Eius quis ipsam vitae, nihil molestias perferendis corporis recusandae consequatur vero iure blanditiis quas adipisci quos voluptatem rem illo voluptate. Eveniet officiis iure sit laborum veniam.</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Suscipit a quis cumque nostrum quisquam molestiae pariatur, asperiores natus necessitatibus adipisci illum cupiditate nam vero, tempora excepturi laborum, earum. Voluptates, nobis.</span><span>Pariatur suscipit, hic blanditiis libero, iusto, quam cupiditate nam error id asperiores repellat ab consequatur vitae ipsa voluptatem totam magni reiciendis expedita maxime dolor! Minus explicabo quas, laborum ab omnis!</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Labore qui ad assumenda placeat optio illo molestias corporis dolorum cum. Doloribus eius autem obcaecati minima, asperiores iure dignissimos ducimus suscipit dolorem.</span><span>Blanditiis earum accusamus eaque temporibus necessitatibus voluptatum dolorem enim debitis inventore assumenda quae error perspiciatis aut, nulla delectus quam ipsa sapiente ea aliquam laboriosam repudiandae. Nesciunt praesentium, beatae eos quasi!</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Cupiditate dicta voluptate impedit? Ad voluptatum dicta earum perferendis asperiores. Dolore distinctio modi expedita consequatur provident perspiciatis neque totam rerum placeat quas.</span><span>Eveniet optio est possimus iste accusantium ipsum illum. Maiores saepe repudiandae facere, delectus iure dolorem vitae nihil pariatur minima, reprehenderit eligendi dolore impedit, nisi doloribus quidem similique. Optio, delectus, minus.</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Iste ex molestiae architecto enim nihil tempore, atque consequuntur doloribus recusandae sed consequatur veniam quos, in consectetur perspiciatis magni nostrum ab voluptates.</span><span>Nisi quos mollitia quis in maiores asperiores labore deserunt! Voluptate voluptas adipisci qui hic officia molestias, laborum necessitatibus sint nam vel minus incidunt perspiciatis recusandae sunt, rerum suscipit doloremque possimus!</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. At nihil perferendis quae quidem facilis aliquid pariatur possimus hic asperiores, recusandae exercitationem adipisci atque laborum, delectus, odit ab reprehenderit distinctio dolor.</span><span>Non excepturi quos aspernatur repudiandae laboriosam, unde molestias, totam, sapiente harum accusamus delectus laborum ipsam velit amet nisi! Consectetur aliquam provident voluptatibus saepe repudiandae eveniet laborum beatae, animi, voluptate dolores.</span></p> <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Cumque magni, eum ipsa, veritatis facere voluptatem dolorum nobis neque minus debitis asperiores iste. Pariatur sequi quam, tempora. Dignissimos, esse similique tempora.</span><span>Ex delectus excepturi autem sunt, nemo repudiandae, recusandae nostrum accusantium nobis temporibus magnam eligendi similique veritatis deleniti, eaque blanditiis possimus at! Repellat alias laboriosam ipsum commodi dolorem, corporis dolore suscipit!</span></p>
另一种基于上述解决方案的跨浏览器方法
function doScrollTo(to, duration) {
var element = document.documentElement;
var start = element.scrollTop,
change = to - start,
increment = 20,
i = 0;
var animateScroll = function(elapsedTime) {
elapsedTime += increment;
var position = easeInOut(elapsedTime, start, change, duration);
if (i === 1 && window.scrollY === start) {
element = document.body;
start = element.scrollTop;
}
element.scrollTop = position;
if (!i) i++;
if (elapsedTime < duration) {
setTimeout(function() {
animateScroll(elapsedTime);
}, increment);
}
};
animateScroll(0);
}
诀窍在于控制实际的滚动变化,如果它为零,则更改滚动元素。
window.scroll({top: 0, left: 0, behavior: 'smooth' });
从一篇关于平滑滚动的文章中得到的。
如果需要,可以使用一些填充物。
还有一种方法是使用window.scrollBy
JSFiddle
function scroll(pxPerFrame, duration) { if (!pxPerFrame || !duration) return; const end = new Date().getTime() + duration; step(); function step() { window.scrollBy(0, pxPerFrame); if (new Date().getTime() < end) { window.setTimeout(step, 1000 / 60); } else { console.log('done scrolling'); } } } body { width: 200px; } <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p> <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p> <p> <button onclick="scroll(-5, 3000)"> scroll(-5, 3000) </button> </p>
改编自下面的回答:
function scroll(y, duration) {
var initialY = document.documentElement.scrollTop || document.body.scrollTop;
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);
}
这应该允许你平滑地滚动(余弦函数)从任何地方到指定的“y”。
我已经选择了@timwolla answer的@akai版本,并添加了stopAnimation函数作为返回,所以在开始新的动画之前,旧的动画可以停止。
if ( this.stopAnimation )
this.stopAnimation()
this.stopAnimation = scrollTo( el, scrollDestination, 300 )
// definitions
function scrollTo(element, to, duration) {
var start = element.scrollTop,
change = to - start,
increment = 20,
timeOut;
var animateScroll = function(elapsedTime) {
elapsedTime += increment;
var position = easeInOut(elapsedTime, start, change, duration);
element.scrollTop = position;
if (elapsedTime < duration) {
timeOut = setTimeout(function() {
animateScroll(elapsedTime);
}, increment);
}
};
animateScroll(0);
return stopAnimation
function stopAnimation() {
clearTimeout( timeOut )
}
}
function easeInOut(currentTime, start, change, duration) {
currentTime /= duration / 2;
if (currentTime < 1) {
return change / 2 * currentTime * currentTime + start;
}
currentTime -= 1;
return -change / 2 * (currentTime * (currentTime - 2) - 1) + start;
}
实际上有一个纯javascript的方式来完成这个不使用setTimeout或requestAnimationFrame或jQuery。
简而言之,在scrollView中找到要滚动到的元素,并使用scrollIntoView
el.scrollIntoView({行为:“平滑”});
这是一个普朗克。
线性滚动动画到底部。纯JS,没有JQuery。也许我的解决方案会对某人有所帮助。
let action_count = 8;
let speed_ms = 15;
let objDiv = document.getElementsByClassName('js_y5_area3').item(0);
let scroll_height = objDiv.scrollHeight;
let window_height = objDiv.offsetHeight;
let scroll_top = objDiv.scrollTop;
let need_scroll_top = scroll_height - window_height;
if (scroll_top < need_scroll_top)
{
let step = Math.ceil((need_scroll_top - scroll_top) / action_count);
let scrollInterval = setInterval(function()
{
scroll_top += step;
objDiv.scrollTop = scroll_top;
if (scroll_top >= need_scroll_top)
{
clearInterval(scrollInterval);
}
}, speed_ms);
}
你可以改变变量action_count, speed_ms来配置滚动动画。
JS解决方案w/o jQuery。
element.onclick = () => window.scrollTo({ top: 0, behavior: 'smooth' })
平滑滚动现在在所有现代浏览器中都是默认实现的。 您还可以对其进行填充,以获得旧浏览器的支持。
// Scroll to specific values
// scrollTo is the same
window.scroll({
top: 2500,
left: 0,
behavior: 'smooth'
});
// Scroll certain amounts from current position
window.scrollBy({
top: 100, // could be negative value
left: 0,
behavior: 'smooth'
});
// Scroll to a certain element
document.querySelector('.hello').scrollIntoView({
behavior: 'smooth'
});
// Scroll certain amounts from current position for any element
document.querySelector('.scrollable-element').scrollBy({
top: 100,
behavior: 'smooth'
});
// Scroll to top
var element = document.querySelector('.scrollable-element');
element.scrollBy({
top: -element.scrollTop,
behavior: 'smooth'
});
来源:https://css-tricks.com/snippets/jquery/smooth-scrolling/