title: stopping a jquery slider by pressing a key
body: <p>I found this code sample and I am trying to figure out how to make the slider stop by pressing a key on the keyboard, but I have no clue how to do it.</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>jQuery(document).ready(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();
      });
  
  });    </code></pre>
  <pre class="snippet-code-css lang-css prettyprint-override"><code>@import url(https://fonts.googleapis.com/css?family=Open+Sans:400,300,600); 
  
  html {
    border-top: 5px solid #fff;
    background: #58DDAF;
    color: #2a2a2a;
  }
  
  html, body {
    margin: 0;
    padding: 0;
    font-family: 'Open Sans';
  }
  
  h1 {
    color: #fff;
    text-align: center;
    font-weight: 300;
  }
  
  #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;
  }</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;h1&gt;Incredibly Basic Slider&lt;/h1&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;</code></pre>
  </div>
  </div>
  </p>
  
  <p>I have tried searching the net for similar examples with this functionality (stopping by pressing a key) where I can get an idea on how to do it, but with no success.</p>
  
  <p>Any help will be appreciated. Thanks!</p>