跨浏览器JavaScript(不是jQuery...）滚动到顶部动画

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);
}

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

看起来已经有很多解决方案了。 无论如何，这是另一个，使用缓动方程。

// 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');

window.scroll({top: 0, left: 0, behavior: 'smooth' });

从一篇关于平滑滚动的文章中得到它。

如果需要，可以使用一些填充物。

我修改了 TimWolla 的答案以使用二次输入向外缓和(:)更平滑一点。这里有一个实际的例子：在jsFiddle上。缓动函数可在此处获得：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;
}

没有 JQuery 代码，希望这会对您有所帮助。

function TopscrollTo() {
if(window.scrollY!=0)
{
    setTimeout(function() {
       window.scrollTo(0,window.scrollY-30);
        TopscrollTo();
    }, 100);
   }
}

在按钮单击事件或您想要的任何其他元素/事件上调用此 TopscrollTo(( 函数。

我修改了@TimWolla的代码以添加更多选项和一些移动函数。此外，还添加了对跨浏览器的支持，包括document.body.scrollTop和document.documentElement.scrollTop

// 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/

缩小版：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;
}

没有人提到CSS属性滚动行为

.CSS

html {
  scroll-behavior: smooth;
}

.JS

window.scrollTo(0,0)

改编自这个答案：

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);
}

这应该允许您从任何地方平滑地滚动(余弦函数(到指定的"y"。

实际上有一种纯粹的javascript方法可以在不使用setTimeout或requestAnimationFrame或jQuery的情况下完成此操作。

简而言之，在 scrollView 中找到要滚动到的元素，并使用 scrollIntoView

el.scrollIntoView({behavior:"smooth"});

这是一个 plunkr。

PURE JAVASCRIPT SCROLLER 类

这是一个古老的问题，但我想如果你想对动画有更多的控制，我可以用一些花哨的东西和更多的选择来回答。

这是一个纯JS类来为您处理滚动：

在 CODEPEN 上查看演示或转到底部并运行 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 />
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容易。

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);
}

刚刚在下面制作了这个只有javascript的解决方案。

简单用法：

EPPZScrollTo.scrollVerticalToElementById('wrapper', 0);

引擎对象(您可以摆弄过滤器、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);
    }
};

基于此处的一些答案，但使用一些简单的数学运算来使用正弦曲线进行平滑过渡：

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);

注意ES6风格

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);
  }

另一种方法是使用 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>
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<p>
<button onclick="scroll(-5, 3000)">
scroll(-5, 3000)
</button>
</p>

我选择了@timwolla答案@akai版本并添加了stopAnimation函数作为回报，因此在开始新动画之前，可以停止旧动画。

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;
}

没有jQuery的JS解决方案。

element.onclick = () => window.scrollTo({ top: 0, behavior: 'smooth' })

基于上述解决方案的另一种跨浏览器方法

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);
}

诀窍是控制实际的滚动更改，如果为零，则更改滚动元素。

现在所有现代浏览器中都默认实现了平滑滚动。您还可以填充它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/

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);
}

您可以更改变量action_count，speed_ms根据自己的喜好配置滚动动画。

使用此解决方案

animate(document.documentElement, 'scrollTop', 0, 200);

谢谢

我看到上述大多数/所有帖子都使用javascript搜索按钮。只要您只有一个按钮，这就可以了。我建议在按钮内定义一个"onclick"元素。然后，该"onclick"将调用导致其滚动的函数。

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>