Как заставить div следовать плавно скроллированием с помощью jQuery?

Ответ 1

Поскольку этот вопрос получает много просмотров, а учебник, связанный с большинством голосов, кажется, отключен, я потратил время на очистку этого script.

Смотрите здесь: 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);

Ответ 2

Там есть фантастический учебник jQuery для https://web.archive.org/web/20121012171851/http://jqueryfordesigners.com/fixed-floating-elements/.

Он реплицирует тип корзины Apple.com для загрузки боковой панели. Запрос Google, который мог бы послужить вам хорошо, - "фиксированная плавающая боковая панель".

Ответ 3

Решение можно свести к следующему:

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);}
});

Я изменил назначение el потому что поиск отдельного элемента по классу не является большой привычкой; если вам нужен только один элемент, найдите его по идентификатору, если вы хотите перебрать коллекцию элементов, найдите их по классу.

пожалуйста, обратите внимание - мой ответ здесь относится к принятому ответу в то время (он все еще является принятым ответом на данный момент, но с тех пор был отредактирован, и поэтому мой ответ больше не "сводится" к тому, что вы видите в ответе @Martti Lane на этот страница; мой ответ "сводится" к его оригинальному, принятому ответу; вы можете взглянуть на историю редактирования ответа @Martti, если вам интересно, что я "выкинул".)

Ответ 4

Это работало для меня как шарм.

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;
}

Источник: http://jqueryfordesigners.com/fixed-floating-elements/

Ответ 5

Это мой последний код.... (на основе предыдущих исправлений, большое спасибо за головной убор, сэкономил много времени на эксперименты). Что меня прослушивало, прокручивалось, а также прокручивалось...:)

это всегда заставляет меня задаться вопросом, как jquery может быть элегантным!!!

$(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);
     });

});

Ответ 6

Вот мое решение (надеюсь, что это plug-n-play достаточно):

• Копировать часть кода JS
• Добавьте класс "слайд-вперед-прокрутка" к элементу, который вы хотите.
• Сделать пиксельные исправления в JS-коде
• Надеюсь, вам понравится!

// 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>

Ответ 7

Этот код работает не очень хорошо я немного исправил его

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);
     }
 });

Ответ 8

Мне нужно, чтобы div остановился, когда он достиг определенного объекта, поэтому я сделал это следующим образом:

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);
        }
    });

Ответ 9

Это одно и то же на 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>   
</body

Ответ 10

Я написал относительно простой ответ для этого.

У меня есть таблица, в которой один из плагинов "липких табличных заголовков" прикрепляется прямо под определенным div на моей странице, но меню слева от таблицы не вставлено (поскольку оно не является частью таблицы.)

В моих целях я знал, что div, для которого "липкость" всегда начиналась с 385 пикселей ниже верхней части окна, поэтому я создал пустой div прямо над этим:

<div id="stopMenu" class="stopMenu"></div>

Затем выполнялось следующее:

$(window).scroll(function(){   
   if ( $(window).scrollTop() > 385 ) {
    extraPadding = $(window).scrollTop() - 385;
    $('#stopMenu').css( "padding-top", extraPadding );
   } else {
     $('#stopMenu').css( "padding-top", "0" );
   }
});

По мере того, как пользователь прокручивает, он добавляет значение $(window).scrollTop() к целому числу 385, а затем добавляет это значение в div stopMenu, что выше того, что я хочу сосредоточиться.

В случае, если пользователь прокручивает весь путь назад, я просто устанавливаю дополнительное дополнение на 0.

Это не требует, чтобы пользователь делал что-нибудь в CSS, но это приятный эффект, чтобы сделать небольшую задержку, поэтому я также добавил class="stopMenu":

.stopMenu {
  .transition: all 0.1s;
}