Comment faire en sorte que div scroll défile en douceur avec jQuery?
Dans mon conteneur, il y a des sections/cases, mais la dernière de ces cases doit suivre le défilement lorsqu'aucune des autres cases n'est visible .
Ainsi, lorsque l'utilisateur fait défiler l'écran vers le bas, il voit une barre latérale normale, mais lorsqu'il est suffisamment réduit, la barre latérale se termine mais la dernière zone commence à suivre en haut de l'écran. Je l'ai souvent vu sur différents types de sites.
Mon code pour le moment:
$(window).scroll(function(){
$.each($('.follow-scroll'),function(){
var eloffset = $(this).offset();
var windowpos = $(window).scrollTop();
if(windowpos<eloffset.top) {
var finaldestination = 0;
} else {
var finaldestination = windowpos;
}
$(this).stop().animate({'top':finaldestination},200);
});
});
Étant donné que cette question suscite beaucoup de points de vue et que le tutoriel lié à la réponse la plus votée semble être hors ligne, j'ai pris le temps de nettoyer ce script.
Voir en direct ici: JSFiddle
JavaScript:
(function($) {
var element = $('.follow-scroll'),
originalY = element.offset().top;
// Space between element and top of screen (when scrolling)
var topMargin = 20;
// Should probably be set in CSS; but here just for emphasis
element.css('position', 'relative');
$(window).on('scroll', function(event) {
var scrollTop = $(window).scrollTop();
element.stop(false, false).animate({
top: scrollTop < originalY
? 0
: scrollTop - originalY + topMargin
}, 300);
});
})(jQuery);
Il existe un fantastique didacticiel jQuery sur https://web.archive.org/web/20121012171851/http://jqueryfordesigners.com/fixed-floating-elements/ .
Il reproduit le type de défilement de la barre latérale du type de panier d’achat d’Apple.com. La requête Google qui pourrait vous avoir bien servi est "barre latérale flottante fixe".
La solution peut se résumer à ceci, à mon humble avis:
var el=$('#follow-scroll');
var elpos=el.offset().top;
$(window).scroll(function () {
var y=$(this).scrollTop();
if(y<elpos){el.stop().animate({'top':0},500);}
else{el.stop().animate({'top':y-elpos},500);}
});
J'ai changé l'assignation de el parce que, toujours à mon humble avis, trouver un seul élément par classe n'est pas une habitude à prendre. Si vous ne voulez qu'un élément, trouvez-le par identifiant. Si vous souhaitez parcourir une collection d'éléments, recherchez-les par classe.
J'utilise this pour garder mon code petit mais, espérons-le, lisible!
notez s'il vous plaît - ma réponse ici fait référence à la réponse acceptée à ce moment-là (c'est toujours la réponse acceptée pour le moment, mais a depuis été modifiée et par conséquent ma réponse ne se résume plus à ce que vous voyez dans la réponse de @Martti Lane sur cette page, ma réponse "résume" sa réponse originale, acceptée, vous pouvez consulter l'historique d'édition de la réponse de @ Martti si vous êtes intéressé par ce que je "résume".)
Cela a fonctionné pour moi comme un charme.
JavaScript:
$(function() { //doc ready
if (!($.browser == "msie" && $.browser.version < 7)) {
var target = "#floating", top = $(target).offset().top - parseFloat($(target).css("margin-top").replace(/auto/, 0));
$(window).scroll(function(event) {
if (top <= $(this).scrollTop()) {
$(target).addClass("fixed");
} else {
$(target).removeClass("fixed");
}
});
}
});
CSS:
#floating.fixed{
position:fixed;
top:0;
}
Source:http://jqueryfordesigners.com/fixed-floating-elements/
C’est mon code final .... (sur la base des corrections précédentes, merci beaucoup pour Headstart, économisez beaucoup de temps d’expérimentation). Ce qui m'embêtait, c'était le défilement vers le haut, ainsi que vers le bas ... :)
ça me fait toujours me demander comment jquery peut être élégant !!!
$(document).ready(function(){
//run once
var el=$('#scrolldiv');
var originalelpos=el.offset().top; // take it where it originally is on the page
//run on scroll
$(window).scroll(function(){
var el = $('#scrolldiv'); // important! (local)
var elpos = el.offset().top; // take current situation
var windowpos = $(window).scrollTop();
var finaldestination = windowpos+originalelpos;
el.stop().animate({'top':finaldestination},500);
});
});
Voici ma solution (espérons que c'est plug-n-play assez aussi):
- Copier une partie de code JS
- Ajoutez la classe 'slide-along-scroll' à l'élément souhaité
- Faites des corrections au pixel parfait dans le code JS
- J'espère que vous apprécierez!
// SlideAlongScroll
var SlideAlongScroll = function(el) {
var _this = this;
this.el = el;
// elements original position
this.elpos_original = el.parent().offset().top;
// scroller timeout
this.scroller_timeout;
// scroller calculate function
this.scroll = function() {
// 20px gap for beauty
var windowpos = $(window).scrollTop() + 20;
// targeted destination
var finaldestination = windowpos - this.elpos_original;
// define stopper object and correction amount
var stopper = ($('.footer').offset().top); // $(window).height() if you dont need it
var stophere = stopper - el.outerHeight() - this.elpos_original - 20;
// decide what to do
var realdestination = 0;
if(windowpos > this.elpos_original) {
if(finaldestination >= stophere) {
realdestination = stophere;
} else {
realdestination = finaldestination;
}
}
el.css({'top': realdestination });
};
// scroll listener
$(window).on('scroll', function() {
// debounce it
clearTimeout(_this.scroller_timeout);
// set scroll calculation timeout
_this.scroller_timeout = setTimeout(function() { _this.scroll(); }, 300);
});
// initial position (in case page is pre-scrolled by browser after load)
this.scroll();
};
// init action, little timeout for smoothness
$(document).ready(function() {
$('.slide-along-scroll').each(function(i, el) {
setTimeout(function(el) { new SlideAlongScroll(el); }, 300, $(el));
});
});/* part you need */
.slide-along-scroll {
padding: 20px;
background-color: #CCCCCC;
transition: top 300ms ease-out;
position: relative;
}
/* just demo */
div {
box-sizing: border-box;
}
.side-column {
float: left;
width: 20%;
}
.main-column {
padding: 20px;
float: right;
width: 75%;
min-height: 1200px;
background-color: #EEEEEE;
}
.body {
padding: 20px 0;
}
.body:after {
content: ' ';
clear: both;
display: table;
}
.header {
padding: 20px;
text-align: center;
border-bottom: 2px solid #CCCCCC;
}
.footer {
padding: 20px;
border-top: 2px solid #CCCCCC;
min-height: 300px;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>
<div class="header">
<h1>Your super-duper website</h1>
</div>
<div class="body">
<div class="side-column">
<!-- part you need -->
<div class="slide-along-scroll">
Side menu content
<ul>
<li>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</li>
<li>Aliquam tincidunt mauris eu risus.</li>
<li>Vestibulum auctor dapibus neque.</li>
</ul>
</div>
</div>
<div class="main-column">
Main content area (1200px)
</div>
</div>
<div class="footer">
Footer (slide along is limited by it)
</div>
</div>Ce code ne fonctionne pas très bien Je l'ai corrigé un peu
var el = $('.caja-pago');
var elpos_original = el.offset().top;
$(window).scroll(function(){
var elpos = el.offset().top;
var windowpos = $(window).scrollTop();
var finaldestination = windowpos;
if(windowpos<elpos_original) {
finaldestination = elpos_original;
el.stop().animate({'top':400},500);
} else {
el.stop().animate({'top':windowpos+10},500);
}
});
J'avais besoin de la div pour arrêter quand elle atteignait un certain objet, alors je l'ai fait comme ceci:
var el = $('#followdeal');
var elpos_original = el.offset().top;
$(window).scroll(function(){
var elpos = el.offset().top;
var windowpos = $(window).scrollTop();
var finaldestination = windowpos;
var stophere = ( $('#filtering').offset().top ) - 170;
if(windowpos<elpos_original || windowpos>=stophere) {
finaldestination = elpos_original;
el.stop().animate({'top':10});
} else {
el.stop().animate({'top':finaldestination-elpos_original+10},500);
}
});
Celui-ci est le même sur facebook:
<script>
var valX = $(window).scrollTop();
function syncScroll(target){
var valY = $(window).scrollTop();
var difYX = valY - valX;
var targetX = $(target).scrollTop();
if(valY > valX){
$(target).scrollTop(difYX);
}
if(difYX <= 0){
$(target).scrollTop(-20);
}
}
$(window).scroll(function(){
syncScroll('#demo');
})
</script>body{
margin:0;
padding:0;
height:100%;
}
#demo{
position:fixed;
height:100vh;
overflow:hidden;
width:40%;
}
#content{
position:relative;
float:right;
width:60%;
color:red;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<body>
<div id="demo">
<ul>
<li>
<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>
</li>
<li>
<p>
"Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?"
</p>
</li>
<li>
<p>
"But I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system, and expound the actual teachings of the great Explorer of the truth, the master-builder of human happiness. No one rejects, dislikes, or avoids pleasure itself, because it is pleasure, but because those who do not know how to pursue pleasure rationally encounter consequences that are extremely painful. Nor again is there anyone who loves or pursues or desires to obtain pain of itself, because it is pain, but because occasionally circumstances occur in which toil and pain can procure him some great pleasure. To take a trivial example, which of us ever undertakes laborious physical exercise, except to obtain some advantage from it? But who has any right to find fault with a man who chooses to enjoy a pleasure that has no annoying consequences, or one who avoids a pain that produces no resultant pleasure?"
</p>
</li>
<ul>
</div>
<div id="content">
<ul>
<li>
<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>
</li>
<li>
<p>
"Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?"
</p>
</li>
<li>
<p>
"But I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system, and expound the actual teachings of the great Explorer of the truth, the master-builder of human happiness. No one rejects, dislikes, or avoids pleasure itself, because it is pleasure, but because those who do not know how to pursue pleasure rationally encounter consequences that are extremely painful. Nor again is there anyone who loves or pursues or desires to obtain pain of itself, because it is pain, but because occasionally circumstances occur in which toil and pain can procure him some great pleasure. To take a trivial example, which of us ever undertakes laborious physical exercise, except to obtain some advantage from it? But who has any right to find fault with a man who chooses to enjoy a pleasure that has no annoying consequences, or one who avoids a pain that produces no resultant pleasure?"
</p>
</li>
<li>
<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>
</li>
<li>
<p>
"Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?"
</p>
</li>
<li>
<p>
"But I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system, and expound the actual teachings of the great Explorer of the truth, the master-builder of human happiness. No one rejects, dislikes, or avoids pleasure itself, because it is pleasure, but because those who do not know how to pursue pleasure rationally encounter consequences that are extremely painful. Nor again is there anyone who loves or pursues or desires to obtain pain of itself, because it is pain, but because occasionally circumstances occur in which toil and pain can procure him some great pleasure. To take a trivial example, which of us ever undertakes laborious physical exercise, except to obtain some advantage from it? But who has any right to find fault with a man who chooses to enjoy a pleasure that has no annoying consequences, or one who avoids a pain that produces no resultant pleasure?"
</p>
</li>
<li>
<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>
</li>
<li>
<p>
"Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?"
</p>
</li>
<li>
<p>
"But I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system, and expound the actual teachings of the great Explorer of the truth, the master-builder of human happiness. No one rejects, dislikes, or avoids pleasure itself, because it is pleasure, but because those who do not know how to pursue pleasure rationally encounter consequences that are extremely painful. Nor again is there anyone who loves or pursues or desires to obtain pain of itself, because it is pain, but because occasionally circumstances occur in which toil and pain can procure him some great pleasure. To take a trivial example, which of us ever undertakes laborious physical exercise, except to obtain some advantage from it? But who has any right to find fault with a man who chooses to enjoy a pleasure that has no annoying consequences, or one who avoids a pain that produces no resultant pleasure?"
</p>
</li>
<li>
<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>
</li>
<li>
<p>
"Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?"
</p>
</li>
<li>
<p>
"But I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system, and expound the actual teachings of the great Explorer of the truth, the master-builder of human happiness. No one rejects, dislikes, or avoids pleasure itself, because it is pleasure, but because those who do not know how to pursue pleasure rationally encounter consequences that are extremely painful. Nor again is there anyone who loves or pursues or desires to obtain pain of itself, because it is pain, but because occasionally circumstances occur in which toil and pain can procure him some great pleasure. To take a trivial example, which of us ever undertakes laborious physical exercise, except to obtain some advantage from it? But who has any right to find fault with a man who chooses to enjoy a pleasure that has no annoying consequences, or one who avoids a pain that produces no resultant pleasure?"
</p>
</li>
<ul>
</div>
</bodyJ'ai écrit une réponse relativement simple pour cela.
J'ai une table qui utilise l'un des plugins "sticky table header" pour coller juste en dessous d'une div particulière sur ma page, mais le menu à gauche de la table ne colle pas (car il ne fait pas partie de la table.)
Pour ce qui me concerne, je savais que la div qui avait besoin de "caractère collant" allait toujours commencer à 385 pixels en dessous du haut de la fenêtre. J'ai donc créé un div vide juste au-dessus:
<div id="stopMenu" class="stopMenu"></div>
Puis couru ceci:
$(window).scroll(function(){
if ( $(window).scrollTop() > 385 ) {
extraPadding = $(window).scrollTop() - 385;
$('#stopMenu').css( "padding-top", extraPadding );
} else {
$('#stopMenu').css( "padding-top", "0" );
}
});
Lorsque l'utilisateur fait défiler l'écran, il ajoute quelle que soit la valeur de $(window).scrollTop() à l'entier 385, puis ajoute cette valeur à la variable stopMenu qui se situe au-dessus de l'élément sur lequel je souhaite rester concentré.
Dans le cas où l'utilisateur reviendrait en arrière, je règle simplement le remplissage supplémentaire sur 0.
Cela ne demande pas à l'utilisateur de faire quoi que ce soit en particulier en CSS, mais c'est un peu un effet de Nice de faire un petit retard, alors je mets aussi le class="stopMenu" dans:
.stopMenu {
.transition: all 0.1s;
}