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jQueryでdivをスムーズにスクロールさせる方法は？

私のコンテナにはセクション/ボックスがありますが、これらのボックスの最後のボックスはスクロールに続くはずです他のボックスが表示されていない場合。

そのため、ユーザーが下にスクロールすると、通常のサイドバーが表示されますが、ユーザーが十分にダウンすると、サイドバーは終了しますが、最後のボックスは画面の上部に続きます。私はこれをさまざまな種類のサイトで多く見ました。

現時点での私のコード：

$(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);
    });
});
jqueryscroll
63
Martti Laine

この質問には多くの意見が寄せられており、最も投票された回答にリンクされているチュートリアルはオフラインのように見えるため、このスクリプトをクリーンアップするのに時間をかけました。

ここでライブをご覧ください： 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);
77
Martti Laine

https://web.archive.org/web/20121012171851/http://jqueryfordesigners.com/fixed-floating-elements/ に、これに関する素晴らしいjQueryチュートリアルがあります。

Apple.comショッピングカートタイプのサイドバースクロールを複製します。役に立つかもしれないGoogleクエリは「固定フローティングサイドバー」です。

52
S Pangborn

ソリューションはこれに要約することができます：

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);}
});

elの割り当てを変更しました。クラスごとに単一の要素を見つけるのは得策ではないためです。 1つの要素のみをIDで検索する場合、要素のコレクションを反復処理する場合は、クラスで検索します。

注-ここでの私の答えは、その時点で受け入れられた答えを指します（それは現時点ではまだ受け入れられている答えですが、それ以来編集されているため、私の答えは@Marttiで表示されるものを「沸騰」しなくなりました）このページでのレーンの答え;私の答えは、彼の元の、受け入れられた答えを「ボイルダウン」します。私が「ボイルダウン」したことに興味があれば、@ Marttiのアンサーの編集履歴を見ることができます。

21
lukkea

これは私にとって魅力的でした。

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;
}

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

5
ajax333221

これが私の最終的なコードです....私を悩ませたのは、スクロールアップとスクロールダウンでした... :)

jqueryがどのようにエレガントになり得るのかといつも不思議に思います!!!

$(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);
     });

});
3
ljgww

ここに私の解決策があります（十分なプラグアンドプレイもあります）：

  1. JSコードパーツをコピーする
  2. 'slide-along-scroll'クラスを必要な要素に追加します
  3. JSコードでピクセル完璧な補正を行う
  4. あなたがそれを楽しむことを願っています！
// 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>
3
Artur Keeven

そのコードはうまく機能しないので、少し修正しました

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);
     }
 });
2
Hugosolar

特定のオブジェクトに到達したときにdivを停止する必要があったため、次のようにしました。

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);
        }
    });
2
Adan Archila

これはfacebookでも同じです：

<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
1
Mahmoud Ali Kassem

これについては比較的簡単な答えを書きました。

「スティッキーテーブルヘッダー」プラグインの1つを使用してページの特定のdivのすぐ下に固定するテーブルがありますが、テーブルの左側のメニューは固定されません（テーブルの一部ではないため）。

私の目的のために、「粘着性」を必要とするdivは常にウィンドウの上部から385ピクセル下で始まることを知っていたので、そのすぐ上に空のdivを作成しました。

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

次に、これを実行しました：

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

ユーザーがスクロールすると、$(window).scrollTop()の値が整数_385_に追加され、その値が、フォーカスを維持したいものの上にあるstopMenu divに追加されます。 。

ユーザーが最後までスクロールした場合、余分なパディングを0に設定します。

これはユーザーが特にCSSで何かをする必要はありませんが、少し遅延させるのは一種の素晴らしい効果なので、私は_class="stopMenu"_も入れます：

_.stopMenu {
  .transition: all 0.1s;
}
_
0
Brian Powell