tablas - Navegador JavaScript cruzado(no jQuery...) desplaza hacia arriba animación
habilitar javascript en chrome en windows (18)
Estoy buscando una animación simple de "desplazamiento hacia arriba" en todos los navegadores que pueda aplicar a un enlace. No quiero requerir una biblioteca JS como jQuery / Moo, etc.
// jQuery Equivilant to convert to pure JS...
$(''html, body'').animate({scrollTop:0}, 400);
Soy un caso perfecto para alguien que debería haber aprendido JS 100% antes de ingresar a una biblioteca. :(
Adaptado de esta respuesta :
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);
}
Esto debería permitirle desplazarse suavemente (función de coseno) desde cualquier lugar a la "y" especificada.
En realidad, hay una forma javascript pura de lograr esto sin usar setTimeout o requestAnimationFrame o jQuery.
En resumen, encuentre el elemento en el scrollView al que desea desplazarse y use scrollIntoView
el.scrollIntoView({behavior:"smooth"});
Aquí hay un scrollIntoView .
Fácil.
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);
}
Modifiqué el código de @TimWolla para agregar más opciones y algunas funciones de movimiento. Además, se agregó soporte para el navegador cruzado con document.body.scrollTop y 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/
Versión reducida: 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;
}
Modifiqué la respuesta de TimWolla para usar la aceleración cuadrática de entrada-salida (un poco más suave :). Aquí hay un ejemplo en acción: en jsFiddle . Las funciones de aceleración están disponibles aquí: Funciones de flexibilización de Robert Penner
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;
}
Parece que ya hay muchas soluciones. De todos modos, aquí hay otra, usa ecuaciones de flexibilización.
// 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'');
Sin el código JQuery, espero que esto te ayude.
function TopscrollTo() {
if(window.scrollY!=0)
{
setTimeout(function() {
window.scrollTo(0,window.scrollY-30);
TopscrollTo();
}, 100);
}
}
llame a esta función de TopscrollTo () en el evento de clic de botón o en cualquier otro elemento / evento que desee.
PURE JAVASCRIPT SCROLLER CLASS
Esta es una pregunta antigua, pero pensé que podría responder con algunas cosas elegantes y algunas opciones más para jugar si quieres tener un poco más de control sobre la animación.
Aquí es una clase JS pura para cuidar el desplazamiento por ti:
VEA LA DEMO EN CODEPEN O VAYA AL ABAJO Y CORRE EL 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();
ESCRITURA DE CLASE COMPLETA + EJEMPLO DE USO:
// 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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Acabo de hacer esta solución javascript única a continuación.
Uso simple:
EPPZScrollTo.scrollVerticalToElementById(''wrapper'', 0);
Objeto del motor (puedes jugar con el filtro, valores fps):
/**
*
* 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);
}
};
Desarrollando algunas de las respuestas aquí, pero utilizando algunas matemáticas simples para una transición suave utilizando una curva sinusoidal:
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);
}
Uso:
// Smoothly scroll from current position to new position in 1/2 second.
scrollTo(element, element.scrollTop, element.scrollTop + 400, 500, 0);
PD. Toma nota del estilo ES6
Este es un enfoque de navegador cruzado basado en las respuestas anteriores
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);
}
He elegido la versión @akai de la respuesta @timwolla y he agregado la función stopAnimation a cambio, así que antes de comenzar una nueva animación, la anterior puede detenerse.
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;
}
Otro enfoque de navegador cruzado basado en la solución anterior.
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);
}
El truco consiste en controlar el cambio de desplazamiento real y, si es cero, cambiar el elemento de desplazamiento.
Usa esta solución
animate(document.documentElement, ''scrollTop'', 0, 200);
Gracias
Otro enfoque más es usar window.scrollBy
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>
Veo que la mayoría / todas las publicaciones anteriores buscan un botón con javascript. Esto funciona, siempre y cuando tengas solo un botón. Recomendaría definir un elemento "onclick" dentro del botón. Ese "onclick" llamaría a la función causando que se desplace.
Si lo haces así, puedes usar más de un botón, siempre que el botón tenga un aspecto similar al siguiente:
<button onclick="scrollTo(document.body, 0, 1250)">To the top</button>
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);
}
Manifestación:
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>
window.scroll({top: 0, left: 0, behavior: ''smooth'' });
Lo obtuve de un artículo sobre Smooth Scrolling .
Si es necesario, hay algunos polyfills disponibles.