Horizontal Timeline Using Html Css Javascript Source Code

Horizontal Timeline Using Html Css Javascript Source Code

We create a horizontal timeline in this article, and we share complete code. We create this horizontal timeline using html, css, and javascript. This is not a simple timeline this is e animation horizontal timeline, so let’s create it.

Write Html Code first!

Html Code

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Horizontal Timeline</title>
  <link rel="stylesheet" href="style.css">
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/meyer-reset/2.0/reset.min.css">
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.4.0/css/font-awesome.min.css">
</head>

<body>
  <section class="cd-horizontal-timeline">
    <div class="timeline">
      <div class="events-wrapper">
        <div class="events">
          <ol>
            <li><a href="#0" data-date="16/01/2014" class="selected">16 Jan</a></li>
            <li><a href="#0" data-date="28/02/2014">28 Feb</a></li>
            <li><a href="#0" data-date="20/04/2014">20 Mar</a></li>
            <li><a href="#0" data-date="20/05/2014">20 May</a></li>
            <li><a href="#0" data-date="09/07/2014">09 Jul</a></li>
            <li><a href="#0" data-date="30/08/2014">30 Aug</a></li>
            <li><a href="#0" data-date="15/09/2014">15 Sep</a></li>
            <li><a href="#0" data-date="01/11/2014">01 Nov</a></li>
            <li><a href="#0" data-date="10/12/2014">10 Dec</a></li>
            <li><a href="#0" data-date="19/01/2015">29 Jan</a></li>
            <li><a href="#0" data-date="03/03/2015">3 Mar</a></li>
          </ol>

          <span class="filling-line" aria-hidden="true"></span>
        </div> <!-- .events -->
      </div> <!-- .events-wrapper -->

      <ul class="cd-timeline-navigation">
        <li><a href="#0" class="prev inactive">Prev</a></li>
        <li><a href="#0" class="next">Next</a></li>
      </ul> <!-- .cd-timeline-navigation -->
    </div> <!-- .timeline -->

    <div class="events-content">
      <ol>
        <li class="selected" data-date="16/01/2014">
          <h2>Horizontal Timeline</h2>
          <em>January 16th, 2014</em>
          <p>
            Lorem ipsum dolor sit amet, consectetur adipisicing elit. Illum praesentium officia, fugit recusandae ipsa,
            quia velit nulla adipisci? Consequuntur aspernatur at, eaque hic repellendus sit dicta consequatur quae, ut
            harum ipsam molestias maxime non nisi reiciendis eligendi! Doloremque quia pariatur harum ea amet quibusdam
            quisquam, quae, temporibus dolores porro doloribus.
          </p>
        </li>

        <li data-date="28/02/2014">
          <h2>Event title here</h2>
          <em>February 28th, 2014</em>
          <p>
            Lorem ipsum dolor sit amet, consectetur adipisicing elit. Illum praesentium officia, fugit recusandae ipsa,
            quia velit nulla adipisci? Consequuntur aspernatur at, eaque hic repellendus sit dicta consequatur quae, ut
            harum ipsam molestias maxime non nisi reiciendis eligendi! Doloremque quia pariatur harum ea amet quibusdam
            quisquam, quae, temporibus dolores porro doloribus.
          </p>
        </li>

        <li data-date="20/04/2014">
          <h2>Event title here</h2>
          <em>March 20th, 2014</em>
          <p>
            Lorem ipsum dolor sit amet, consectetur adipisicing elit. Illum praesentium officia, fugit recusandae ipsa,
            quia velit nulla adipisci? Consequuntur aspernatur at, eaque hic repellendus sit dicta consequatur quae, ut
            harum ipsam molestias maxime non nisi reiciendis eligendi! Doloremque quia pariatur harum ea amet quibusdam
            quisquam, quae, temporibus dolores porro doloribus.
          </p>
        </li>

        <li data-date="20/05/2014">
          <h2>Event title here</h2>
          <em>May 20th, 2014</em>
          <p>
            Lorem ipsum dolor sit amet, consectetur adipisicing elit. Illum praesentium officia, fugit recusandae ipsa,
            quia velit nulla adipisci? Consequuntur aspernatur at, eaque hic repellendus sit dicta consequatur quae, ut
            harum ipsam molestias maxime non nisi reiciendis eligendi! Doloremque quia pariatur harum ea amet quibusdam
            quisquam, quae, temporibus dolores porro doloribus.
          </p>
        </li>

        <li data-date="09/07/2014">
          <h2>Event title here</h2>
          <em>July 9th, 2014</em>
          <p>
            Lorem ipsum dolor sit amet, consectetur adipisicing elit. Illum praesentium officia, fugit recusandae ipsa,
            quia velit nulla adipisci? Consequuntur aspernatur at, eaque hic repellendus sit dicta consequatur quae, ut
            harum ipsam molestias maxime non nisi reiciendis eligendi! Doloremque quia pariatur harum ea amet quibusdam
            quisquam, quae, temporibus dolores porro doloribus.
          </p>
        </li>

        <li data-date="30/08/2014">
          <h2>Event title here</h2>
          <em>August 30th, 2014</em>
          <p>
            Lorem ipsum dolor sit amet, consectetur adipisicing elit. Illum praesentium officia, fugit recusandae ipsa,
            quia velit nulla adipisci? Consequuntur aspernatur at, eaque hic repellendus sit dicta consequatur quae, ut
            harum ipsam molestias maxime non nisi reiciendis eligendi! Doloremque quia pariatur harum ea amet quibusdam
            quisquam, quae, temporibus dolores porro doloribus.
          </p>
        </li>

        <li data-date="15/09/2014">
          <h2>Event title here</h2>
          <em>September 15th, 2014</em>
          <p>
            Lorem ipsum dolor sit amet, consectetur adipisicing elit. Illum praesentium officia, fugit recusandae ipsa,
            quia velit nulla adipisci? Consequuntur aspernatur at, eaque hic repellendus sit dicta consequatur quae, ut
            harum ipsam molestias maxime non nisi reiciendis eligendi! Doloremque quia pariatur harum ea amet quibusdam
            quisquam, quae, temporibus dolores porro doloribus.
          </p>
        </li>

        <li data-date="01/11/2014">
          <h2>Event title here</h2>
          <em>November 1st, 2014</em>
          <p>
            Lorem ipsum dolor sit amet, consectetur adipisicing elit. Illum praesentium officia, fugit recusandae ipsa,
            quia velit nulla adipisci? Consequuntur aspernatur at, eaque hic repellendus sit dicta consequatur quae, ut
            harum ipsam molestias maxime non nisi reiciendis eligendi! Doloremque quia pariatur harum ea amet quibusdam
            quisquam, quae, temporibus dolores porro doloribus.
          </p>
        </li>

        <li data-date="10/12/2014">
          <h2>Event title here</h2>
          <em>December 10th, 2014</em>
          <p>
            Lorem ipsum dolor sit amet, consectetur adipisicing elit. Illum praesentium officia, fugit recusandae ipsa,
            quia velit nulla adipisci? Consequuntur aspernatur at, eaque hic repellendus sit dicta consequatur quae, ut
            harum ipsam molestias maxime non nisi reiciendis eligendi! Doloremque quia pariatur harum ea amet quibusdam
            quisquam, quae, temporibus dolores porro doloribus.
          </p>
        </li>

        <li data-date="19/01/2015">
          <h2>Event title here</h2>
          <em>January 19th, 2015</em>
          <p>
            Lorem ipsum dolor sit amet, consectetur adipisicing elit. Illum praesentium officia, fugit recusandae ipsa,
            quia velit nulla adipisci? Consequuntur aspernatur at, eaque hic repellendus sit dicta consequatur quae, ut
            harum ipsam molestias maxime non nisi reiciendis eligendi! Doloremque quia pariatur harum ea amet quibusdam
            quisquam, quae, temporibus dolores porro doloribus.
          </p>
        </li>

        <li data-date="03/03/2015">
          <h2>Event title here</h2>
          <em>March 3rd, 2015</em>
          <p>
            Lorem ipsum dolor sit amet, consectetur adipisicing elit. Illum praesentium officia, fugit recusandae ipsa,
            quia velit nulla adipisci? Consequuntur aspernatur at, eaque hic repellendus sit dicta consequatur quae, ut
            harum ipsam molestias maxime non nisi reiciendis eligendi! Doloremque quia pariatur harum ea amet quibusdam
            quisquam, quae, temporibus dolores porro doloribus.
          </p>
        </li>
      </ol>
    </div> <!-- .events-content -->
  </section>
  <!-- Javascript -->
  <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
  <script src="app.js"></script>
</body>

</html>

This is our whole Html code for this horizontal timeline. In another project, Html code is very basic. But in this timeline, there are lots of important Html tags like Data-date, and aria-hidden so carefully read the Html code and see what tags work. You can comment us that tag to see what happens in the project🥶.

This is our output with only Html code. Then we write Css and javascript for the horizontal timeline.

Html Output

Horizontal Timeline Html

Horizontal Timeline Html

Now Write Css For Styling Our Horizontal Timeline

Css Code

/* -------------------------------- 

Primary style

-------------------------------- */
@import url(https://fonts.googleapis.com/css?family=Source+Sans+Pro);
*, *::after, *::before {
  box-sizing: border-box;
}

html {
  font-size: 62.5%;
}

body {
  font-size: 1.6rem;
  font-family: "Source Sans Pro", sans-serif;
  color: #383838;
  background-color: #f8f8f8;
}

a {
  color: #7b9d6f;
  text-decoration: none;
}

/* -------------------------------- 

Main Components 

-------------------------------- */
.cd-horizontal-timeline {
  opacity: 0;
  margin: 2em auto;
  -webkit-transition: opacity 0.2s;
  -moz-transition: opacity 0.2s;
  transition: opacity 0.2s;
}
.cd-horizontal-timeline::before {
  /* never visible - this is used in jQuery to check the current MQ */
  content: 'mobile';
  display: none;
}
.cd-horizontal-timeline.loaded {
  /* show the timeline after events position has been set (using JavaScript) */
  opacity: 1;
}
.cd-horizontal-timeline .timeline {
  position: relative;
  height: 100px;
  width: 90%;
  max-width: 800px;
  margin: 0 auto;
}
.cd-horizontal-timeline .events-wrapper {
  position: relative;
  height: 100%;
  margin: 0 40px;
  overflow: hidden;
}
.cd-horizontal-timeline .events-wrapper::after, .cd-horizontal-timeline .events-wrapper::before {
  /* these are used to create a shadow effect at the sides of the timeline */
  content: '';
  position: absolute;
  z-index: 2;
  top: 0;
  height: 100%;
  width: 20px;
}
.cd-horizontal-timeline .events-wrapper::before {
  left: 0;
  background-image: -webkit-linear-gradient( left , #f8f8f8, rgba(248, 248, 248, 0));
  background-image: linear-gradient(to right, #f8f8f8, rgba(248, 248, 248, 0));
}
.cd-horizontal-timeline .events-wrapper::after {
  right: 0;
  background-image: -webkit-linear-gradient( right , #f8f8f8, rgba(248, 248, 248, 0));
  background-image: linear-gradient(to left, #f8f8f8, rgba(248, 248, 248, 0));
}
.cd-horizontal-timeline .events {
  /* this is the grey line/timeline */
  position: absolute;
  z-index: 1;
  left: 0;
  top: 49px;
  height: 2px;
  /* width will be set using JavaScript */
  background: #dfdfdf;
  -webkit-transition: -webkit-transform 0.4s;
  -moz-transition: -moz-transform 0.4s;
  transition: transform 0.4s;
}
.cd-horizontal-timeline .filling-line {
  /* this is used to create the green line filling the timeline */
  position: absolute;
  z-index: 1;
  left: 0;
  top: 0;
  height: 100%;
  width: 100%;
  background-color: #7b9d6f;
  -webkit-transform: scaleX(0);
  -moz-transform: scaleX(0);
  -ms-transform: scaleX(0);
  -o-transform: scaleX(0);
  transform: scaleX(0);
  -webkit-transform-origin: left center;
  -moz-transform-origin: left center;
  -ms-transform-origin: left center;
  -o-transform-origin: left center;
  transform-origin: left center;
  -webkit-transition: -webkit-transform 0.3s;
  -moz-transition: -moz-transform 0.3s;
  transition: transform 0.3s;
}
.cd-horizontal-timeline .events a {
  position: absolute;
  bottom: 0;
  z-index: 2;
  text-align: center;
  font-size: 1.3rem;
  padding-bottom: 15px;
  color: #383838;
  /* fix bug on Safari - text flickering while timeline translates */
  -webkit-transform: translateZ(0);
  -moz-transform: translateZ(0);
  -ms-transform: translateZ(0);
  -o-transform: translateZ(0);
  transform: translateZ(0);
}
.cd-horizontal-timeline .events a::after {
  /* this is used to create the event spot */
  content: '';
  position: absolute;
  left: 50%;
  right: auto;
  -webkit-transform: translateX(-50%);
  -moz-transform: translateX(-50%);
  -ms-transform: translateX(-50%);
  -o-transform: translateX(-50%);
  transform: translateX(-50%);
  bottom: -5px;
  height: 12px;
  width: 12px;
  border-radius: 50%;
  border: 2px solid #dfdfdf;
  background-color: #f8f8f8;
  -webkit-transition: background-color 0.3s, border-color 0.3s;
  -moz-transition: background-color 0.3s, border-color 0.3s;
  transition: background-color 0.3s, border-color 0.3s;
}
.no-touch .cd-horizontal-timeline .events a:hover::after {
  background-color: #7b9d6f;
  border-color: #7b9d6f;
}
.cd-horizontal-timeline .events a.selected {
  pointer-events: none;
}
.cd-horizontal-timeline .events a.selected::after {
  background-color: #7b9d6f;
  border-color: #7b9d6f;
}
.cd-horizontal-timeline .events a.older-event::after {
  border-color: #7b9d6f;
}
@media only screen and (min-width: 1100px) {
  .cd-horizontal-timeline {
    margin: 6em auto;
  }
  .cd-horizontal-timeline::before {
    /* never visible - this is used in jQuery to check the current MQ */
    content: 'desktop';
  }
}

.cd-timeline-navigation a {
  /* these are the left/right arrows to navigate the timeline */
  position: absolute;
  z-index: 1;
  top: 50%;
  bottom: auto;
  -webkit-transform: translateY(-50%);
  -moz-transform: translateY(-50%);
  -ms-transform: translateY(-50%);
  -o-transform: translateY(-50%);
  transform: translateY(-50%);
  height: 34px;
  width: 34px;
  border-radius: 50%;
  border: 2px solid #dfdfdf;
  /* replace text with an icon */
  overflow: hidden;
  color: transparent;
  text-indent: 100%;
  white-space: nowrap;
  -webkit-transition: border-color 0.3s;
  -moz-transition: border-color 0.3s;
  transition: border-color 0.3s;
}
.cd-timeline-navigation a::after {
  /* arrow icon */
  content: '';
  position: absolute;
  height: 16px;
  width: 16px;
  left: 50%;
  top: 50%;
  bottom: auto;
  right: auto;
  -webkit-transform: translateX(-50%) translateY(-50%);
  -moz-transform: translateX(-50%) translateY(-50%);
  -ms-transform: translateX(-50%) translateY(-50%);
  -o-transform: translateX(-50%) translateY(-50%);
  transform: translateX(-50%) translateY(-50%);
  background: url(../img/cd-arrow.svg) no-repeat 0 0;
}
.cd-timeline-navigation a.prev {
  left: 0;
  -webkit-transform: translateY(-50%) rotate(180deg);
  -moz-transform: translateY(-50%) rotate(180deg);
  -ms-transform: translateY(-50%) rotate(180deg);
  -o-transform: translateY(-50%) rotate(180deg);
  transform: translateY(-50%) rotate(180deg);
}
.cd-timeline-navigation a.next {
  right: 0;
}
.no-touch .cd-timeline-navigation a:hover {
  border-color: #7b9d6f;
}
.cd-timeline-navigation a.inactive {
  cursor: not-allowed;
}
.cd-timeline-navigation a.inactive::after {
  background-position: 0 -16px;
}
.no-touch .cd-timeline-navigation a.inactive:hover {
  border-color: #dfdfdf;
}

.cd-horizontal-timeline .events-content {
  position: relative;
  width: 100%;
  margin: 2em 0;
  overflow: hidden;
  -webkit-transition: height 0.4s;
  -moz-transition: height 0.4s;
  transition: height 0.4s;
}
.cd-horizontal-timeline .events-content li {
  position: absolute;
  z-index: 1;
  width: 100%;
  left: 0;
  top: 0;
  -webkit-transform: translateX(-100%);
  -moz-transform: translateX(-100%);
  -ms-transform: translateX(-100%);
  -o-transform: translateX(-100%);
  transform: translateX(-100%);
  padding: 0 5%;
  opacity: 0;
  -webkit-animation-duration: 0.4s;
  -moz-animation-duration: 0.4s;
  animation-duration: 0.4s;
  -webkit-animation-timing-function: ease-in-out;
  -moz-animation-timing-function: ease-in-out;
  animation-timing-function: ease-in-out;
}
.cd-horizontal-timeline .events-content li.selected {
  /* visible event content */
  position: relative;
  z-index: 2;
  opacity: 1;
  -webkit-transform: translateX(0);
  -moz-transform: translateX(0);
  -ms-transform: translateX(0);
  -o-transform: translateX(0);
  transform: translateX(0);
}
.cd-horizontal-timeline .events-content li.enter-right, .cd-horizontal-timeline .events-content li.leave-right {
  -webkit-animation-name: cd-enter-right;
  -moz-animation-name: cd-enter-right;
  animation-name: cd-enter-right;
}
.cd-horizontal-timeline .events-content li.enter-left, .cd-horizontal-timeline .events-content li.leave-left {
  -webkit-animation-name: cd-enter-left;
  -moz-animation-name: cd-enter-left;
  animation-name: cd-enter-left;
}
.cd-horizontal-timeline .events-content li.leave-right, .cd-horizontal-timeline .events-content li.leave-left {
  -webkit-animation-direction: reverse;
  -moz-animation-direction: reverse;
  animation-direction: reverse;
}
.cd-horizontal-timeline .events-content li > * {
  max-width: 800px;
  margin: 0 auto;
}
.cd-horizontal-timeline .events-content h2 {
  font-weight: bold;
  font-size: 2.6rem;
  font-family: "Playfair Display", serif;
  font-weight: 700;
  line-height: 1.2;
}
.cd-horizontal-timeline .events-content em {
  display: block;
  font-style: italic;
  margin: 10px auto;
}
.cd-horizontal-timeline .events-content em::before {
  content: '- ';
}
.cd-horizontal-timeline .events-content p {
  font-size: 1.4rem;
  color: #959595;
}
.cd-horizontal-timeline .events-content em, .cd-horizontal-timeline .events-content p {
  line-height: 1.6;
}
@media only screen and (min-width: 768px) {
  .cd-horizontal-timeline .events-content h2 {
    font-size: 7rem;
  }
  .cd-horizontal-timeline .events-content em {
    font-size: 2rem;
  }
  .cd-horizontal-timeline .events-content p {
    font-size: 1.8rem;
  }
}

@-webkit-keyframes cd-enter-right {
  0% {
    opacity: 0;
    -webkit-transform: translateX(100%);
  }
  100% {
    opacity: 1;
    -webkit-transform: translateX(0%);
  }
}
@-moz-keyframes cd-enter-right {
  0% {
    opacity: 0;
    -moz-transform: translateX(100%);
  }
  100% {
    opacity: 1;
    -moz-transform: translateX(0%);
  }
}
@keyframes cd-enter-right {
  0% {
    opacity: 0;
    -webkit-transform: translateX(100%);
    -moz-transform: translateX(100%);
    -ms-transform: translateX(100%);
    -o-transform: translateX(100%);
    transform: translateX(100%);
  }
  100% {
    opacity: 1;
    -webkit-transform: translateX(0%);
    -moz-transform: translateX(0%);
    -ms-transform: translateX(0%);
    -o-transform: translateX(0%);
    transform: translateX(0%);
  }
}
@-webkit-keyframes cd-enter-left {
  0% {
    opacity: 0;
    -webkit-transform: translateX(-100%);
  }
  100% {
    opacity: 1;
    -webkit-transform: translateX(0%);
  }
}
@-moz-keyframes cd-enter-left {
  0% {
    opacity: 0;
    -moz-transform: translateX(-100%);
  }
  100% {
    opacity: 1;
    -moz-transform: translateX(0%);
  }
}
@keyframes cd-enter-left {
  0% {
    opacity: 0;
    -webkit-transform: translateX(-100%);
    -moz-transform: translateX(-100%);
    -ms-transform: translateX(-100%);
    -o-transform: translateX(-100%);
    transform: translateX(-100%);
  }
  100% {
    opacity: 1;
    -webkit-transform: translateX(0%);
    -moz-transform: translateX(0%);
    -ms-transform: translateX(0%);
    -o-transform: translateX(0%);
    transform: translateX(0%);
  }
}

This is almost 500 lines of code css. We write mobile-friendly also so when users see this horizontal timeline on mobile it is responsive. We use all browsers like firefox Moz, opera, safari, and chrome. We use before after for moving our horizontal timeline.

We use a lot of new properties in css, most of the new css tags. In the last codes of the line for mobile-friendly design. Then we use the keyframe for creating animation in the timeline.

So that’s it for css code you can see the output below with only html css, then we write javascript (jquery) to complete our timeline project🔥.

Css Updated Output

Horizontal Timeline css

This is a blank photo of css update output, many people think that is what happens so now when we add javascript(jquery) code to our timeline it’s visible.

50+ Frontend Project With Code 

So write javascript code for our final output.

Javascript(Jquery) Code

jQuery(document).ready(function ($) {
  var timelines = $('.cd-horizontal-timeline'),
    eventsMinDistance = 60;

  (timelines.length > 0) && initTimeline(timelines);

  function initTimeline(timelines) {
    timelines.each(function () {
      var timeline = $(this),
        timelineComponents = {};
      //cache timeline components 
      timelineComponents['timelineWrapper'] = timeline.find('.events-wrapper');
      timelineComponents['eventsWrapper'] = timelineComponents['timelineWrapper'].children('.events');
      timelineComponents['fillingLine'] = timelineComponents['eventsWrapper'].children('.filling-line');
      timelineComponents['timelineEvents'] = timelineComponents['eventsWrapper'].find('a');
      timelineComponents['timelineDates'] = parseDate(timelineComponents['timelineEvents']);
      timelineComponents['eventsMinLapse'] = minLapse(timelineComponents['timelineDates']);
      timelineComponents['timelineNavigation'] = timeline.find('.cd-timeline-navigation');
      timelineComponents['eventsContent'] = timeline.children('.events-content');

      //assign a left postion to the single events along the timeline
      setDatePosition(timelineComponents, eventsMinDistance);
      //assign a width to the timeline
      var timelineTotWidth = setTimelineWidth(timelineComponents, eventsMinDistance);
      //the timeline has been initialize - show it
      timeline.addClass('loaded');

      //detect click on the next arrow
      timelineComponents['timelineNavigation'].on('click', '.next', function (event) {
        event.preventDefault();
        updateSlide(timelineComponents, timelineTotWidth, 'next');
      });
      //detect click on the prev arrow
      timelineComponents['timelineNavigation'].on('click', '.prev', function (event) {
        event.preventDefault();
        updateSlide(timelineComponents, timelineTotWidth, 'prev');
      });
      //detect click on the a single event - show new event content
      timelineComponents['eventsWrapper'].on('click', 'a', function (event) {
        event.preventDefault();
        timelineComponents['timelineEvents'].removeClass('selected');
        $(this).addClass('selected');
        updateOlderEvents($(this));
        updateFilling($(this), timelineComponents['fillingLine'], timelineTotWidth);
        updateVisibleContent($(this), timelineComponents['eventsContent']);
      });

      //on swipe, show next/prev event content
      timelineComponents['eventsContent'].on('swipeleft', function () {
        var mq = checkMQ();
        (mq == 'mobile') && showNewContent(timelineComponents, timelineTotWidth, 'next');
      });
      timelineComponents['eventsContent'].on('swiperight', function () {
        var mq = checkMQ();
        (mq == 'mobile') && showNewContent(timelineComponents, timelineTotWidth, 'prev');
      });

      //keyboard navigation
      $(document).keyup(function (event) {
        if (event.which == '37' && elementInViewport(timeline.get(0))) {
          showNewContent(timelineComponents, timelineTotWidth, 'prev');
        } else if (event.which == '39' && elementInViewport(timeline.get(0))) {
          showNewContent(timelineComponents, timelineTotWidth, 'next');
        }
      });
    });
  }

  function updateSlide(timelineComponents, timelineTotWidth, string) {
    //retrieve translateX value of timelineComponents['eventsWrapper']
    var translateValue = getTranslateValue(timelineComponents['eventsWrapper']),
      wrapperWidth = Number(timelineComponents['timelineWrapper'].css('width').replace('px', ''));
    //translate the timeline to the left('next')/right('prev') 
    (string == 'next')
      ? translateTimeline(timelineComponents, translateValue - wrapperWidth + eventsMinDistance, wrapperWidth - timelineTotWidth)
      : translateTimeline(timelineComponents, translateValue + wrapperWidth - eventsMinDistance);
  }

  function showNewContent(timelineComponents, timelineTotWidth, string) {
    //go from one event to the next/previous one
    var visibleContent = timelineComponents['eventsContent'].find('.selected'),
      newContent = (string == 'next') ? visibleContent.next() : visibleContent.prev();

    if (newContent.length > 0) { //if there's a next/prev event - show it
      var selectedDate = timelineComponents['eventsWrapper'].find('.selected'),
        newEvent = (string == 'next') ? selectedDate.parent('li').next('li').children('a') : selectedDate.parent('li').prev('li').children('a');

      updateFilling(newEvent, timelineComponents['fillingLine'], timelineTotWidth);
      updateVisibleContent(newEvent, timelineComponents['eventsContent']);
      newEvent.addClass('selected');
      selectedDate.removeClass('selected');
      updateOlderEvents(newEvent);
      updateTimelinePosition(string, newEvent, timelineComponents, timelineTotWidth);
    }
  }

  function updateTimelinePosition(string, event, timelineComponents, timelineTotWidth) {
    //translate timeline to the left/right according to the position of the selected event
    var eventStyle = window.getComputedStyle(event.get(0), null),
      eventLeft = Number(eventStyle.getPropertyValue("left").replace('px', '')),
      timelineWidth = Number(timelineComponents['timelineWrapper'].css('width').replace('px', '')),
      timelineTotWidth = Number(timelineComponents['eventsWrapper'].css('width').replace('px', ''));
    var timelineTranslate = getTranslateValue(timelineComponents['eventsWrapper']);

    if ((string == 'next' && eventLeft > timelineWidth - timelineTranslate) || (string == 'prev' && eventLeft < - timelineTranslate)) {
      translateTimeline(timelineComponents, - eventLeft + timelineWidth / 2, timelineWidth - timelineTotWidth);
    }
  }

  function translateTimeline(timelineComponents, value, totWidth) {
    var eventsWrapper = timelineComponents['eventsWrapper'].get(0);
    value = (value > 0) ? 0 : value; //only negative translate value
    value = (!(typeof totWidth === 'undefined') && value < totWidth) ? totWidth : value; //do not translate more than timeline width
    setTransformValue(eventsWrapper, 'translateX', value + 'px');
    //update navigation arrows visibility
    (value == 0) ? timelineComponents['timelineNavigation'].find('.prev').addClass('inactive') : timelineComponents['timelineNavigation'].find('.prev').removeClass('inactive');
    (value == totWidth) ? timelineComponents['timelineNavigation'].find('.next').addClass('inactive') : timelineComponents['timelineNavigation'].find('.next').removeClass('inactive');
  }

  function updateFilling(selectedEvent, filling, totWidth) {
    //change .filling-line length according to the selected event
    var eventStyle = window.getComputedStyle(selectedEvent.get(0), null),
      eventLeft = eventStyle.getPropertyValue("left"),
      eventWidth = eventStyle.getPropertyValue("width");
    eventLeft = Number(eventLeft.replace('px', '')) + Number(eventWidth.replace('px', '')) / 2;
    var scaleValue = eventLeft / totWidth;
    setTransformValue(filling.get(0), 'scaleX', scaleValue);
  }

  function setDatePosition(timelineComponents, min) {
    for (i = 0; i < timelineComponents['timelineDates'].length; i++) {
      var distance = daydiff(timelineComponents['timelineDates'][0], timelineComponents['timelineDates'][i]),
        distanceNorm = Math.round(distance / timelineComponents['eventsMinLapse']) + 2;
      timelineComponents['timelineEvents'].eq(i).css('left', distanceNorm * min + 'px');
    }
  }

  function setTimelineWidth(timelineComponents, width) {
    var timeSpan = daydiff(timelineComponents['timelineDates'][0], timelineComponents['timelineDates'][timelineComponents['timelineDates'].length - 1]),
      timeSpanNorm = timeSpan / timelineComponents['eventsMinLapse'],
      timeSpanNorm = Math.round(timeSpanNorm) + 4,
      totalWidth = timeSpanNorm * width;
    timelineComponents['eventsWrapper'].css('width', totalWidth + 'px');
    updateFilling(timelineComponents['timelineEvents'].eq(0), timelineComponents['fillingLine'], totalWidth);

    return totalWidth;
  }

  function updateVisibleContent(event, eventsContent) {
    var eventDate = event.data('date'),
      visibleContent = eventsContent.find('.selected'),
      selectedContent = eventsContent.find('[data-date="' + eventDate + '"]'),
      selectedContentHeight = selectedContent.height();

    if (selectedContent.index() > visibleContent.index()) {
      var classEnetering = 'selected enter-right',
        classLeaving = 'leave-left';
    } else {
      var classEnetering = 'selected enter-left',
        classLeaving = 'leave-right';
    }

    selectedContent.attr('class', classEnetering);
    visibleContent.attr('class', classLeaving).one('webkitAnimationEnd oanimationend msAnimationEnd animationend', function () {
      visibleContent.removeClass('leave-right leave-left');
      selectedContent.removeClass('enter-left enter-right');
    });
    eventsContent.css('height', selectedContentHeight + 'px');
  }

  function updateOlderEvents(event) {
    event.parent('li').prevAll('li').children('a').addClass('older-event').end().end().nextAll('li').children('a').removeClass('older-event');
  }

  function getTranslateValue(timeline) {
    var timelineStyle = window.getComputedStyle(timeline.get(0), null),
      timelineTranslate = timelineStyle.getPropertyValue("-webkit-transform") ||
        timelineStyle.getPropertyValue("-moz-transform") ||
        timelineStyle.getPropertyValue("-ms-transform") ||
        timelineStyle.getPropertyValue("-o-transform") ||
        timelineStyle.getPropertyValue("transform");

    if (timelineTranslate.indexOf('(') >= 0) {
      var timelineTranslate = timelineTranslate.split('(')[1];
      timelineTranslate = timelineTranslate.split(')')[0];
      timelineTranslate = timelineTranslate.split(',');
      var translateValue = timelineTranslate[4];
    } else {
      var translateValue = 0;
    }

    return Number(translateValue);
  }

  function setTransformValue(element, property, value) {
    element.style["-webkit-transform"] = property + "(" + value + ")";
    element.style["-moz-transform"] = property + "(" + value + ")";
    element.style["-ms-transform"] = property + "(" + value + ")";
    element.style["-o-transform"] = property + "(" + value + ")";
    element.style["transform"] = property + "(" + value + ")";
  }

  //based on http://stackoverflow.com/questions/542938/how-do-i-get-the-number-of-days-between-two-dates-in-javascript
  function parseDate(events) {
    var dateArrays = [];
    events.each(function () {
      var dateComp = $(this).data('date').split('/'),
        newDate = new Date(dateComp[2], dateComp[1] - 1, dateComp[0]);
      dateArrays.push(newDate);
    });
    return dateArrays;
  }

  function parseDate2(events) {
    var dateArrays = [];
    events.each(function () {
      var singleDate = $(this),
        dateComp = singleDate.data('date').split('T');
      if (dateComp.length > 1) { //both DD/MM/YEAR and time are provided
        var dayComp = dateComp[0].split('/'),
          timeComp = dateComp[1].split(':');
      } else if (dateComp[0].indexOf(':') >= 0) { //only time is provide
        var dayComp = ["2000", "0", "0"],
          timeComp = dateComp[0].split(':');
      } else { //only DD/MM/YEAR
        var dayComp = dateComp[0].split('/'),
          timeComp = ["0", "0"];
      }
      var newDate = new Date(dayComp[2], dayComp[1] - 1, dayComp[0], timeComp[0], timeComp[1]);
      dateArrays.push(newDate);
    });
    return dateArrays;
  }

  function daydiff(first, second) {
    return Math.round((second - first));
  }

  function minLapse(dates) {
    //determine the minimum distance among events
    var dateDistances = [];
    for (i = 1; i < dates.length; i++) {
      var distance = daydiff(dates[i - 1], dates[i]);
      dateDistances.push(distance);
    }
    return Math.min.apply(null, dateDistances);
  }

  /*
    How to tell if a DOM element is visible in the current viewport?
    http://stackoverflow.com/questions/123999/how-to-tell-if-a-dom-element-is-visible-in-the-current-viewport
  */
  function elementInViewport(el) {
    var top = el.offsetTop;
    var left = el.offsetLeft;
    var width = el.offsetWidth;
    var height = el.offsetHeight;

    while (el.offsetParent) {
      el = el.offsetParent;
      top += el.offsetTop;
      left += el.offsetLeft;
    }

    return (
      top < (window.pageYOffset + window.innerHeight) &&
      left < (window.pageXOffset + window.innerWidth) &&
      (top + height) > window.pageYOffset &&
      (left + width) > window.pageXOffset
    );
  }

  function checkMQ() {
    //check if mobile or desktop device
    return window.getComputedStyle(document.querySelector('.cd-horizontal-timeline'), '::before').getPropertyValue('content').replace(/'/g, "").replace(/"/g, "");
  }
});

This is our final code of javascript (jquery). This code is very lengthy we write code for functionality like we write code using css then we write javascript so it has interactive, hope you understand😉 jquery code.

Let’s see our horizontal timeline output.

Final Output

Horizontal Timeline Javascript

Horizontal Timeline Javascript

This is a screenshot of our horizontal timeline project, and we share this video output so you can see an exact preview of the timeline. We use html, css, and javascript (jquery) code for this awesome👏 project.

Hope you like this project, we create your own and use this project in any project as a part project like the reviews section, and contact form. If you need any more project-related frontend. Visit our homepage and you get 100+ projects💝.

Quiz Project Using Javascript

if you have any confusion Comment below or you can contact us by filling out our contact us form from the home section. 🤞🎉

Code By – Ritesh Kumar

written by – Codewithrandom

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