title: Multiple sliders with Very Simple Slider
body: <p>I'm trying to use the <strong><a href="https://codepen.io/doodlemarks/pen/aFcly" rel="nofollow noreferrer">Very Simple Slider</a></strong> for my future website, but I have an issue with it when I want to have several sliders on the same page.</p>
  
  <p>When I duplicate all properties in the HTML/CSS/JS and change the names to create a new slider, it does create a new slider but the controlling arrows do not work anymore. Well, they work, but for one slider only. I know it might be something like a JS issue, but as I am not a developer, I can't find the problem. </p>
  
  <p>If you can help me finding a solution - and also a way to shorten both CSS and JS, that would be super cool, because I will have to use this slider ten times on the same page through css modals.</p>
  
  <p>Oh, and here are my codes.</p>
  
  <p><div class="snippet" data-lang="js" data-hide="true" data-console="true" data-babel="false">
  <div class="snippet-code snippet-currently-hidden">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>jQuery(document).ready(function($) {
  
    $('#checkbox').change(function() {
      setInterval(function() {
        moveRight();
      }, 3000);
    });
  
    var slideCount = $('#slider ul li').length;
    var slideWidth = $('#slider ul li').width();
    var slideHeight = $('#slider ul li').height();
    var sliderUlWidth = slideCount * slideWidth;
  
    $('#slider').css({
      width: slideWidth,
      height: slideHeight
    });
  
    $('#slider ul').css({
      width: sliderUlWidth,
      marginLeft: -slideWidth
    });
  
    $('#slider ul li:last-child').prependTo('#slider ul');
  
    function moveLeft() {
      $('#slider ul').animate({
        left: +slideWidth
      }, 200, function() {
        $('#slider ul li:last-child').prependTo('#slider ul');
        $('#slider ul').css('left', '');
      });
    };
  
    function moveRight() {
      $('#slider ul').animate({
        left: -slideWidth
      }, 200, function() {
        $('#slider ul li:first-child').appendTo('#slider ul');
        $('#slider ul').css('left', '');
      });
    };
  
    $('a.control_prev').click(function() {
      moveLeft();
    });
  
    $('a.control_next').click(function() {
      moveRight();
    });
  
  
    var slideCount = $('#slider2 ul li').length;
    var slideWidth = $('#slider2 ul li').width();
    var slideHeight = $('#slider2 ul li').height();
    var sliderUlWidth = slideCount * slideWidth;
  
    $('#slider2').css({
      width: slideWidth,
      height: slideHeight
    });
  
    $('#slider2 ul').css({
      width: sliderUlWidth,
      marginLeft: -slideWidth
    });
  
    $('#slider2 ul li:last-child').prependTo('#slider2 ul');
  
    function moveLeft() {
      $('#slider2 ul').animate({
        left: +slideWidth
      }, 200, function() {
        $('#slider2 ul li:last-child').prependTo('#slider2 ul');
        $('#slider2 ul').css('left', '');
      });
    };
  
    function moveRight() {
      $('#slider2 ul').animate({
        left: -slideWidth
      }, 200, function() {
        $('#slider2 ul li:first-child').appendTo('#slider2 ul');
        $('#slider2 ul').css('left', '');
      });
    };
  
    $('a.control_prev2').click(function() {
      moveLeft();
    });
  
    $('a.control_next2').click(function() {
      moveRight();
    });
  
  });</code></pre>
  <pre class="snippet-code-css lang-css prettyprint-override"><code>#slider {
    position: relative;
    overflow: hidden;
    margin: 20px auto 0 auto;
    border-radius: 4px;
  }
  
  #slider ul {
    position: relative;
    margin: 0;
    padding: 0;
    height: 200px;
    list-style: none;
  }
  
  #slider ul li {
    position: relative;
    display: block;
    float: left;
    margin: 0;
    padding: 0;
    width: 500px;
    height: 300px;
    background: #ccc;
    text-align: center;
    line-height: 300px;
  }
  
  a.control_prev,
  a.control_next {
    position: absolute;
    top: 40%;
    z-index: 999;
    display: block;
    padding: 4% 3%;
    width: auto;
    height: auto;
    background: #2a2a2a;
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    opacity: 0.8;
    cursor: pointer;
  }
  
  a.control_prev:hover,
  a.control_next:hover {
    opacity: 1;
    -webkit-transition: all 0.2s ease;
  }
  
  a.control_prev {
    border-radius: 0 2px 2px 0;
  }
  
  a.control_next {
    right: 0;
    border-radius: 2px 0 0 2px;
  }
  
  .slider_option {
    position: relative;
    margin: 10px auto;
    width: 160px;
    font-size: 18px;
  }
  
  #slider2 {
    position: relative;
    overflow: hidden;
    margin: 20px auto 0 auto;
    border-radius: 4px;
  }
  
  #slider2 ul {
    position: relative;
    margin: 0;
    padding: 0;
    height: 200px;
    list-style: none;
  }
  
  #slider2 ul li {
    position: relative;
    display: block;
    float: left;
    margin: 0;
    padding: 0;
    width: 500px;
    height: 300px;
    background: #ccc;
    text-align: center;
    line-height: 300px;
  }
  
  a.control_prev2,
  a.control_next2 {
    position: absolute;
    top: 40%;
    z-index: 999;
    display: block;
    padding: 4% 3%;
    width: auto;
    height: auto;
    background: #2a2a2a;
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    opacity: 0.8;
    cursor: pointer;
  }
  
  a.control_prev2:hover,
  a.control_next2:hover {
    opacity: 1;
    -webkit-transition: all 0.2s ease;
  }
  
  a.control_prev2 {
    border-radius: 0 2px 2px 0;
  }
  
  a.control_next2 {
    right: 0;
    border-radius: 2px 0 0 2px;
  }
  
  .slider_option2 {
    position: relative;
    margin: 10px auto;
    width: 160px;
    font-size: 18px;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"&gt;&lt;/script&gt;
  &lt;div id="slider"&gt;
    &lt;a href="#" class="control_next"&gt;&gt;&lt;/a&gt;
    &lt;a href="#" class="control_prev"&gt;
      &lt;&lt;/a&gt;
        &lt;ul&gt;
          &lt;li&gt;SLIDE 1&lt;/li&gt;
          &lt;li style="background: #aaa;"&gt;SLIDE 2&lt;/li&gt;
          &lt;li&gt;SLIDE 3&lt;/li&gt;
          &lt;li style="background: #aaa;"&gt;SLIDE 4&lt;/li&gt;
        &lt;/ul&gt;
  &lt;/div&gt;
  
  &lt;div id="slider2"&gt;
    &lt;a href="#" class="control_next2"&gt;&gt;&lt;/a&gt;
    &lt;a href="#" class="control_prev2"&gt;
      &lt;&lt;/a&gt;
        &lt;ul&gt;
          &lt;li&gt;SLIDE 1&lt;/li&gt;
          &lt;li style="background: #aaa;"&gt;SLIDE 2&lt;/li&gt;
          &lt;li&gt;SLIDE 3&lt;/li&gt;
          &lt;li style="background: #aaa;"&gt;SLIDE 4&lt;/li&gt;
        &lt;/ul&gt;
  &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>