Horizontal Scrollable Timeline Plugin - jTimeline:

In this article, we will understand about the Horizontal Scrollable Timeline Plugin - jTimeline in detail with the help of an example. jTimeline plugin is a tiny, responsive, jQuery timeline plugin that generates a horizontal scrollable timeline from an HTML unordered list.
Following are the various examples of Horizontal Scrollable Timeline Plugin - jTimeline.
Example 1:

<! DOCTYPE html>
<html>
            <head>
                        <meta http-equiv = "Content-Type"
                                    content = "text/html; charset=UTF-8" />
                        <title> Example of Horizontal Scrollable Timeline Plugin - jTimeline </title>
                        <meta name = "description"
                                    content = "jQuery tooltip plugin" />
                        <meta content = "width=800, initial-scale=1"
                        name = "viewport" />
<script src = "https://code.jquery.com/jquery-3.5.1.min.js">
                        </script>                     
                        <link rel = "stylesheet" href = "https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css"/>
<style>
•  {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
*,
*::before {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
h1 {
  position: relative;
  font-family: "Raleway", sans-serif;
  font-weight: 1300;
  font-size: 40px;
  color: white;
  -webkit-transition: all 0.4s ease 0s;
  -o-transition: all 0.4s ease 0s;
  transition: all 0.4s ease 0s;
  text-align: center;
}
h2 {
   text-align: center;
  font-family: "Raleway", sans-serif;
  font-weight: 1300;
  font-size: 40px;
  color: white;
  -webkit-transition: all 0.4s ease 0s;
  -o-transition: all 0.4s ease 0s;
  transition: all 0.4s ease 0s;
}
button {
  background: transparent;
  border: none;
  cursor: pointer;
  outline: none;
}
body {
  font: normal 16px/1.5 "Helvetica Neue", sans-serif;
  background: #666;
  color: #fff;
}
.circle:hover {
  position: relative;
  -webkit-transition: height .25s ease, width .25s ease;
  transition: height .25s ease, width .25s ease;
  -webkit-transform: translate(-50%,-50%);
  transform: translate(-50%,-50%);
}
.circle {
  height: 60px;
  width: 60px;
}
.circle:hover:before
 {
  content: ' ';
  display: block;
  position: absolute;
  top: 0;
  right: 0;
bottom: 0;
  left: 0;
  border-radius: 50%;
  border: 1px solid red;
}
.circle:hover:after {
content: ' ';
  display: block;
  position: absolute;
  top: 0;
  right: 0;
bottom: 0;
  left: 0;
  border-radius: 50%;
  border: 1px solid red;
}
.circle:hover:before {
  -webkit-animation: ripple 1s linear infinite;
  animation: ripple 1s linear infinite;
}
.circle:hover:after {
  -webkit-animation: ripple 1s linear 0.5s infinite;
  animation: ripple 1s linear 0.5s infinite;
}
.circle:before {
  -webkit-animation: none;
  animation: none;
}
.circle:after {
  -webkit-animation: none;
  animation: none;
}
@-webkit-keyframes ripple {
  0% {-webkit-transform:scale(1); }
  75% {-webkit-transform:scale(2.75); opacity: 1; }
  100% {-webkit-transform:scale(4); opacity: 0; }
}
@keyframes ripple {
  0% {transform:scale(1); }
  75% {transform:scale(2.75); opacity: 1; }
  100% {transform:scale(4); opacity: 0;}
}
.timeline {
  white-space: nowrap;
  overflow-x: hidden;
}
.timeline > ol {
  font-size: 0;
  width: 100vw;
  padding: 190px 0;
  transition: all 1s;
}
.timeline > ol > li {
  position: relative;
  display: inline-block;
  list-style-type: none;
  width: 160px;
  height: 3px;
  background: #fff;
}
.timeline > ol > li:last-child {
  width: 250px;
}
.timeline > ol > li:not(:first-child) {
  margin-left: 14px;
}
.timeline > ol > li:not(:last-child) span.show-info {
  content: ' ';
  cursor: pointer;
  position: absolute;
  top: 50%;
  left: calc(100% + 1px);
  bottom: 0;
  width: 12px;
  height: 12px;
  transform: translateY(-50%);
  border-radius: 50%;
  background: #F45B69;
}
.timeline > ol > li:not(:last-child) .just-date {
  position: absolute;
  height: auto;
  opacity: 1;
  right: -35px;
  top: -35px;
  z-index: -1;
}
.timeline > ol > li:nth-child(odd) .just-date {
  top: 14px;
}
.timeline > ol > li:nth-child(even) .just-date {
  top: -30px;
}
.timeline > ol > li:not(:last-child) .just-date p {
  font-size:.8rem;
  font-weight: normal;
}
.timeline > ol > li div.info-container {
  position: absolute;
  left: calc(100% + 7px);
  width: 550px;
  padding: 15px;
  font-size: 1rem;
  white-space: normal;
  color: black;
  background: white;
  opacity: 0;
  transition: opacity 0.2s ease-in-out;
}
.timeline > ol > li div.info-container::before {
  content: ' ';
  position: absolute;
  top: 100%;
  left: 0;
  width: 0;
  height: 0;
  border-style: solid;
}
.timeline > ol > li:nth-child(odd) div.info-container {
  top: -16px;
  transform: translateY(-100%);
  border-radius: 20px 0;
}
.timeline > ol > li:nth-child(odd) div.info-container::before {
  top: 100%;
  border-width: 8px 8px 0 0;
  border-color: white transparent transparent transparent;
}
.timeline > ol > li:nth-child(even) div.info-container {
  top: calc(100% + 16px);
  border-radius: 0 20px;
}
.timeline > ol > li:nth-child(even) div.info-container::before {
  top: -8px;
  border-width: 8px 0 0 8px;
  border-color: transparent transparent transparent white;
}
.timeline time:not(.date) {
  display: block;
  font-size: 1.2rem;
  font-weight: bold;
  margin-bottom: 8px;
}
.timeline .arrows {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}
.timeline .arrows .arrow__prev {
  margin-right: 20px;
}
.timeline .disabled {
  opacity: .5;
}
.timeline .arrows img {
  width: 45px;
  height: 45px;
}
nav.archive-links {
  background-color: #fff;
  box-sizing: content-box;
  padding: 0;
}
nav.archive-links ol.ol-events {
  counter-reset: li;
  overflow: hidden;
  border: 1px solid #d9d9d9;
  margin: 0;
  padding: 0px;
}
nav.archive-links ol.ol-events li {
  float: left;
  clear: left;
  width: 100%;
  margin: 0;
  list-style: none;
}
nav.archive-links ol.ol-events {
  display: block;
}
nav.archive-links ol.ol-events li {
  display: block;
}
 
nav.archive-links ol.ol-events li a {
  display: block;
}
 
nav.archive-links ol.ol-events li a {
  font-size: 11px;
  height: 29px;
  position: relative;
  text-decoration: none;
}
nav.archive-links ol.ol-events li .main-image:after {
  color: #b7b7b7;
  content: counter(li, decimal-leading-zero);
  counter-increment: li;
  font-size: 14px;
  line-height: 29px;
  height: 29px;
  width: 30px;
  position: absolute;
  top: 0;
  right: 0;
  text-align: center;
  font-weight: 100;
  letter-spacing: 1px;
}
nav.archive-links ol.ol-events li .no-main-image:after {
  color: #b7b7b7;
  content: counter(li, decimal-leading-zero);
  counter-increment: li;
  font-size: 14px;
  line-height: 29px;
  height: 29px;
  width: 30px;
  position: absolute;
  top: 0;
  right: 0;
  text-align: center;
  font-weight: 100;
  letter-spacing: 1px;
}
nav.archive-links ol.ol-events li .no-main-image:after {
  color: #b7b7b7;
  content: counter(li, decimal-leading-zero);
  counter-increment: li;
  font-size: 14px;
  line-height: 29px;
  height: 29px;
  width: 30px;
  position: absolute;
  top: 0;
  right: 0;
  text-align: center;
  font-weight: 100;
  letter-spacing: 1px;
}
nav.archive-links li .main-image,
nav.archive-links li .no-main-image {
  float: left;
  margin-right: 0.5em;
  width: 30px;
  height: 30px;
  background: #e6e6e6;
}
nv.archive-links li .main-image.event-one {
  background: yellow;
}
nav.archive-links li .no-main-image.event-one {
  background: yellow;
}
nav.archive-links li .main-image.event-two {
  background: orange;
}
nav.archive-links li .no-main-image.event-two {
  background: orange;
}
nav.archive-links li .main-image {
  background-size: cover;
  background-position: center center;
}
nav.archive-links a:link,
nav.archive-links a:visited,
nav.archive-links a:hover,
nav.archive-links a:active {
  color: #000000;
}
nav.archive-links ol.ol-events li a:hover .main-image:after {
  color: #2690d8;
}
nav.archive-links ol.ol-events li a:hover .no-main-image:after {
  color: #2690d8;
}
nav.archive-links ol.ol-events li a:active .main-image:after {
  color: #777;
}
nav.archive-links ol.ol-events li a:active .no-main-image:after {
  color: #777;
}
nav.archive-links ol.ol-events li.active a .main-image:after {
  color: #777;
}
nav.archive-links ol.ol-events li.active a .no-main-image:after {
  color: #777;
}
nav.archive-links li + li {
  border-top: 1px solid #d9d9d9;
}
nav.archive-links li span {
  display: block;
  line-height: 1em;
}
nav.archive-links span.link-title {
  letter-spacing: 1px;
  text-transform: uppercase;
  padding-top: 0.3em;
  font-size: 1em;
}
nav.archive-links span.link-excerpt {
  color: #c3c3c3;
}
 @media screen and (max-width: 599px) {
  .timeline ol,
  .timeline ol li {
    width: auto;
  }
  .timeline ol {
    padding: 0;
    transform: none !important;
  }
 
  .timeline ol li {
    display: block;
    height: auto;
    background: transparent;
  }
  .timeline ol li:first-child {
    margin-top: 25px;
  }
  .timeline ol li:not(:first-child) {
    margin-left: auto;
  }
  .timeline ol li div {
    width: 94%;
    height: auto !important;
    margin: 0 auto 25px;
  }
  .timeline ol li div {
    position: static;
  }
  .timeline ol li:nth-child(odd) div {
    transform: none;
  }
  .timeline ol li:nth-child(odd) div::before {
    left: 50%;
    top: 100%;
    transform: translateX(-50%);
    border: none;
    border-left: 1px solid white;
    height: 25px;
  }
  .timeline ol li:nth-child(even) div::before {
    left: 50%;
    top: 100%;
    transform: translateX(-50%);
    border: none;
    border-left: 1px solid white;
    height: 25px;
  }
  .timeline ol li:last-child,
  .timeline ol li:nth-last-child(2) div::before,
  .timeline ol li:not(:last-child)::after,
  .timeline .arrows {
    display: none;
  }
}
</style>
<h1> Example </h1>
<h2> Horizontal Scrollable Timeline Plugin - jTimeline </h2>
<section class="timeline">
  <ol>
    <li>
      <div class="just-date">
        <p>Ago 2 2018</p>
      </div>
      <span class="show-info circle"></span>
      <div class="info-container">
        <time>Ago 2</time>
        <div>
          <nav class="archive-links">
            <ol class="ol-events">
              <li>
                <a href="#">
                  <div class="main-image"></div>
                  <span class="link-title">Event </span>
                  <span class="link-excerpt"><time class="date" datetime="November 05 2012">Nov 05, 2017</time> / No Comments</span>
                </a>
              </li>
    <li>
      <div class="just-date">
        <p>Ago 5 2018</p>
      </div>
      <span class="show-info circle"></span>
      <div class="info-container">
        <time>Ago 5</time>
        <div>
          <nav class="archive-links">
            <ol class="ol-events">
            </ol>
          </nav>
        </div>
      </div>
    </li>
    <li>
      <div class="just-date">
        <p>Ago 8 2018</p>
      </div>
      <span class="show-info circle"></span>
      <div class="info-container">
        <time>Ago 8</time>
        <div>
          <nav class="archive-links">
            <ol class="ol-events">
              <li>
                <a href="#">
                  <div class="main-image"></div>
                  <span class="link-title">Event </span>
                  <span class="link-excerpt"><time class="date" datetime="November 05 2012">Nov 05, 2017</time> / No Comments</span>
                </a>
              </li>
            </ol>
          </nav>
        </div>
      </div>
    </li>
    <li class="today-mark">
      <div class="just-date">
        <p>Today</p>
      </div>
      <span class="show-info show-today"></span>
      <div class="info-container">
        <time>Today date</time>
        <div>
          <nav class="archive-links">
            <ol class="ol-events">
              <li>
                <a href="#">
                  <div class="main-image"></div>
                  <span class="link-title">Event any</span>
                  <span class="link-excerpt"><time class="date" datetime="November 12 2012">Nov 12, 2017</time> / No Comments</span>
                </a>
              </li>
            </ol>
          </nav>
        </div>
      </div>
    </li>
    <li>
      <div class="just-date">
        <p>Ago 10 2018</p>
      </div>
      <span class="show-info circle"></span>
      <div class="info-container">
        <time>Ago 10</time>
        <div>
          <nav class="archive-links">
            <ol class="ol-events">
            
    <li>
      <div class="just-date">
        <p>Ago 12 2018</p>
      </div>
      <span class="show-info circle"></span>
      <div class="info-container">
        <time>Ago 12</time>
        <div>
          <nav class="archive-links">
            <ol class="ol-events">
              <li>
                <a href="#">
                  <div class="main-image event-two"></div>
                  <span class="link-title">Event any</span>
                  <span class="link-excerpt"><time class="date" datetime="November 12 2012">Nov 12, 2017</time> / No Comments</span>
                </a>
              </li>
            </ol>
          </nav>
        </div>
      </div>
    </li>
    <li>
      <div class="just-date">
        <p>Ago 17 2018</p>
      </div>
      <span class="show-info circle"></span>
      <div class="info-container">
        <time>Ago 17</time>
        <div>
          <nav class="archive-links">
            <ol class="ol-events">
              <li>
                <a href="#">
                  <div class="main-image event-two"></div>
                  <span class="link-title">Event any</span>
                  <span class="link-excerpt"><time class="date" datetime="November 12 2012">Nov 12, 2017</time> / No Comments</span>
                </a>
              </li>
              <li>
                <a href="#">
                  <div class="main-image event-one"></div>
                  <span class="link-title">Event </span>
                  <span class="link-excerpt"><time class="date" datetime="November 05 2012">Nov 05, 2017</time> / No Comments</span>
                </a>
              </li>
              <li>
                <a href="#">
                  <div class="main-image"></div>
                  <span class="link-title">Other event</span>
                  <span class="link-excerpt"><time class="date" datetime="November 01 2012">Nov 01, 2017</time> / No Comments</span>
                </a>
              </li>
 
            </ol>
          </nav>
        </div>
      </div>
    </li>
    <li>
      <div class="just-date">
        <p>Ago 21 2018</p>
      </div>
      <span class="show-info circle"></span>
      <div class="info-container">
        <time>Ago 21</time>
        <div>
          <nav class="archive-links">
            <ol class="ol-events">
              <li>
                <a href="#">
                  <div class="main-image event-two"></div>
                  <span class="link-title">Event any</span>
                  <span class="link-excerpt"><time class="date" datetime="November 12 2012">Nov 12, 2017</time> / No Comments</span>
                </a>
              </li>
            </ol>
          </nav>
        </div>
      </div>
    </li>
    <li>
      <div class="just-date">
        <p>Ago 24 2018</p>
      </div>
      <span class="show-info circle"></span>
      <div class="info-container">
        <time>Ago 24</time>
        <div>
          <nav class="archive-links">
            <ol class="ol-events">
              <li>
                <a href="#">
                  <div class="main-image event-two"></div>
                  <span class="link-title">Event any</span>
                  <span class="link-excerpt"><time class="date" datetime="November 12 2012">Nov 12, 2017</time> / No Comments</span>
                </a>
              </li>
              <li>
                <a href="#">
                  <div class="main-image event-one"></div>
                  <span class="link-title">Event </span>
                  <span class="link-excerpt"><time class="date" datetime="November 05 2012">Nov 05, 2017</time> / No Comments</span>
                </a>
              </li>
              <li>
                <a href="#">
                  <div class="main-image"></div>
                  <span class="link-title">Other event</span>
                  <span class="link-excerpt"><time class="date" datetime="November 01 2012">Nov 01, 2017</time> / No Comments</span>
                </a>
              </li>
            </ol>
          </nav>
        </div>
      </div>
    </li>
    <li>
      <div class="just-date">
        <p>Ago 26 2018</p>
      </div>
      <span class="show-info circle"></span>
      <div class="info-container">
        <time>Ago 26</time>
        <div>
          <nav class="archive-links">
            <ol class="ol-events">
            </ol>
          </nav>
        </div>
      </div>
    </li>
    <li>
      <div class="just-date">
        <p>Ago 29 2018</p>
      </div>
      <span class="show-info circle"></span>
      <div class="info-container">
        <time>Ago 29</time>
        <div>
          <nav class="archive-links">
            <ol class="ol-events">
              <li>
                <a href="#">
                  <div class="main-image event-two"></div>
                  <span class="link-title">Event any</span>
                  <span class="link-excerpt"><time class="date" datetime="November 12 2012">Nov 12, 2017</time> / No Comments</span>
                </a>
              </li>
            </ol>
          </nav>
        </div>
      </div>
    </li>
    <li>
      <div class="just-date">
        <p>Ago 30 2018</p>
      </div>
      <span class="show-info circle"></span>
      <div class="info-container">
        <time>Ago 30</time>
        <div>
          <nav class="archive-links">
            <ol class="ol-events">
              <li>
                <a href="#">
                  <div class="main-image event-two"></div>
                  <span class="link-title">Event any</span>
                  <span class="link-excerpt"><time class="date" datetime="November 12 2012">Nov 12, 2017</time> / No Comments</span>
                </a>
              </li>
            </ol>
          </nav>
        </div>
      </div>
    </li>
    <li>
      <div class="just-date">
        <p>Ago 31 2018</p>
      </div>
      <span class="show-info circle"></span>
      <div class="info-container">
        <time>Ago 31</time>
        <div>
          <nav class="archive-links">
            <ol class="ol-events">
              <li>
                <a href="#">
                  <div class="main-image event-two"></div>
                  <span class="link-title">Event any</span>
                  <span class="link-excerpt"><time class="date" datetime="November 12 2012">Nov 12, 2017</time> / No Comments</span>
                </a>
              </li>
              <li>
                <a href="#">
                  <div class="main-image event-one"></div>
                  <span class="link-title">Event </span>
                  <span class="link-excerpt"><time class="date" datetime="November 05 2012">Nov 05, 2017</time> / No Comments</span>
                </a>
              </li>
              <li>
                <a href="#">
                  <div class="main-image"></div>
                  <span class="link-title">Other event</span>
                  <span class="link-excerpt"><time class="date" datetime="November 01 2012">Nov 01, 2017</time> / No Comments</span>
                </a>
              </li>
            </ol>
          </nav>
        </div>
      </div>
    </li>
</li>
  </ol>
</section>
<script>
 (function() {
  const timeline = document.querySelector(".timeline ol"),
    elH = document.querySelectorAll(".timeline li > div"),
        spanTriggers = document.querySelectorAll(".show-info"),
    arrows = document.querySelectorAll(".timeline .arrows .arrow"),
    arrowPrev = document.querySelector(".timeline .arrows .arrow__prev"),
    arrowNext = document.querySelector(".timeline .arrows .arrow__next"),
    firstItem = document.querySelector(".timeline > ol > li:first-child"),
    lastItem = document.querySelector(".timeline > ol > li:last-child"),
    xScrolling = 280,
    disabledClass = "disabled";
  window.addEventListener("load", init);
  function init() {
    setEqualHeights(elH);
    animateTl(xScrolling, arrows, timeline);
    setSwipeFn(timeline, arrowPrev, arrowNext);
    setKeyboardFn(arrowPrev, arrowNext);
    setShowDetail (spanTriggers);
  }
    function setShowDetail(el) {
    for (let i = 0; i < el.length; i++) {
      el[i].addEventListener('mouseover', function (e) {
        e.target.nextElementSibling.style.opacity = 1;
      });
      el[i].addEventListener('mouseout', function (e) {
        e.target.nextElementSibling.style.opacity = 0;
      });
    }
  }
  function setEqualHeights(el) {
    let counter = 0;
    for (let i = 0; i < el.length; i++) {
      const singleHeight = el[i].offsetHeight;
      if (counter < singleHeight) {
        counter = singleHeight;
      }
    }
    for (let i = 0; i < el.length; i++) {
      el[i].style.height = `${counter}px`;
    }
  }
  function isElementInViewport(el) {
    const rect = el.getBoundingClientRect();
    return (
      rect.top >= 0 &&
      rect.left >= 0 &&
      rect.bottom <= (window.innerHeight || document.documentElement.clientHeight) &&
      rect.right <= (window.innerWidth || document.documentElement.clientWidth)
    );
  }
  function setBtnState(el, flag = true) {
    if (flag) {
      el.classList.add(disabledClass);
    } else {
      if (el.classList.contains(disabledClass)) {
        el.classList.remove(disabledClass);
      }
      el.disabled = false;
    }
  }
   function animateTl(scrolling, el, tl) {
    let counter = 0;
    for (let i = 0; i < el.length; i++) {
      el[i].addEventListener("click", function() {
        if (!arrowPrev.disabled) {
          arrowPrev.disabled = true;
        }
        if (!arrowNext.disabled) {
          arrowNext.disabled = true;
        }
        console.log(this);
        const sign = (this.classList.contains("arrow__prev")) ? "" : "-";
        if (counter === 0) {
          tl.style.transform = `translateX(-${scrolling}px)`;
        } else {
          const tlStyle = getComputedStyle(tl);
          const tlTransform = tlStyle.getPropertyValue("-webkit-transform") || tlStyle.getPropertyValue("transform");
          const values = parseInt(tlTransform.split(",")[4]) + parseInt(`${sign}${scrolling}`);
          tl.style.transform = `translateX(${values}px)`;
        }
        setTimeout(() => {
          isElementInViewport(firstItem) ? setBtnState(arrowPrev) : setBtnState(arrowPrev, false);
          isElementInViewport(lastItem) ? setBtnState(arrowNext) : setBtnState(arrowNext, false);
        }, 1100);
        counter++;
      });
    }
  }
  function setSwipeFn(tl, prev, next) {
    const hammer = new Hammer(tl);
    hammer.on("swipeleft", () => next.click());
    hammer.on("swiperight", () => prev.click());
  }
  function setKeyboardFn(prev, next) {
    document.addEventListener("keydown", (e) => {
      if ((e.which === 37) || (e.which === 39)) {
        const timelineOfTop = timeline.offsetTop;
        const y = window.pageYOffset;
        if (timelineOfTop !== y) {
          window.scrollTo(0, timelineOfTop);
        }
        if (e.which === 37) {
          prev.click();
        } else if (e.which === 39) {
          next.click();
        }
      }
    });
  }
})();
</script>
</body>
</html>
Explanation:
In the above example, we have created a horizontal scrollable timeline plugin. In this, we can scroll through the events by clicking next/previous arrows in the timeline just like a list scroller.
Output:
Following is the output of this example.
Horizontal Scrollable Timeline Plugin - jTimeline
Next TopicSkype Chat jQuery Plugin