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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

HTML

            
              <div class="container">
<section class="clear">
			<header class="list-header">
				<div class="circles">
					<div></div>
					<div></div>
					<div></div>
				</div>
					
				<h1>Things To Do</h1>

				<div class="menu">
					<div></div>
					<div></div>
					<div></div>
				</div>
			</header>
				
			<ul class="task-list">
				<li class="task">
					Click and drag this item right to mark it as complete
				</li>
				<li class="task">
					Drag left to delete an item
				</li>
				<li class="task">
					Don't edit anything in the HTML or CSS
				</li>
				<li class="task">
					Try to use only JavaScript, no third-party libraries
				</li>
			</ul>
		</section>
  
  <br>
  
  <p><a href="https://gallery.mailchimp.com/282459d63a019df7bb8ca2e92/images/800d93e4-bfd6-4749-8dd0-f2c4fb784c17.gif">See Demo</a> | <a href="http://bitsofco.de/clear-js/">Read the Blog Post</a> | <a href="https://codepen.io/ire/pen/NNPaEQ">My Solution</a> (no peaking!)</p>

	</div>
            
          
!

CSS

            
              /* RESETTING */

html { box-sizing: border-box; font-size: 62.5%;  }
*, *:before, *:after { box-sizing: inherit; }
body { font-size: 1.6rem; font-weight: 300; line-height: 1.6; font-family: 'Open Sans', sans-serif; }
h1 { font-size: 2rem; }
a { color: inherit; }


/* LAYOUT */

.container { width: 90%; max-width: 500px; margin: 100px auto; }

/* CLEAR ELEMENT */
.clear { margin: 30px 0; }

.list-header { display: flex; align-items: center; background-color: #e0dee0; border-top-left-radius: 5px; border-top-right-radius: 5px; padding: 10px 20px; }

.list-header div { width: 20%; }

.list-header .circles div { height: 15px; width: 15px; border-radius: 50%; display: inline-block; margin-right: 5px; }

.list-header .circles div:nth-child(1) { background-color: #fc615d; }

.list-header .circles div:nth-child(2) { background-color: #fec342; }

.list-header .circles div:nth-child(3) { background-color: #34c749; }

.list-header .menu { display: flex; align-items: flex-end; flex-direction: column; }

.list-header .menu div { width: 25px; height: 3px; background-color: #a9a9a9; border-radius: 3px; }

.list-header .menu div:nth-child(2) { margin: 4px 0; }

.list-header h1 { width: 60%; text-align: center; }

/* Task List */
.task-list { background-color: #272822; min-height: 400px; overflow: hidden; }

/* Individual Task */
.task { color: #fff; width: 100%; height: auto; min-height: 50px; line-height: 2; position: relative; padding: 8px 20px; height: auto; transition: background-color 1s; 

    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.task:before, .task:after { position: absolute; top: 0; width: 40px; height: 50px; line-height: 50px; text-align: center; }

.task:before { content: "\2714"; left: -40px; }

.task:after { content: "\2718"; right: -40px; }

.task:not(.completed):not(.completing) { border-bottom: 2px solid #d44a29; }

.task:nth-child(1) { background-color: #e3252c; }

.task:nth-child(2) { background-color: #dc342a; }

.task:nth-child(3) { background-color: #e7522e; }

.task:nth-child(4) { background-color: #e86d2f; }

.task:nth-child(5) { background-color: #e86d2f; }

.task.completing { text-decoration: line-through; background-color: green; }

.task.completed { opacity: 0.5; text-decoration: line-through; background-color: #323232; }

.task.completed:before { content: ""; }

.task.deleting { background-color: #323232; }

            
          
!

JS

            
              /*

  THINGS TO NOTE
		- Each task list item has a class of .task
		- When the task is being swiped right, try adding the class of .completing
		- When the task is being swiped left, try adding the class of .deleting
		- A completed task should have a class of .completed
    
    - The check and crosses are added as :before and :after pseudo-elements of the .task li so you don't need to add them
    
      GOOD LUCK!

*/


/* 
  Note: classList doesn't work great in IE without a shim, but as 
  this was intended as a fun exercise I'm omitting it :)
*/

(function(){
  
  var list = document.getElementsByClassName('task-list')[0];
  var tasks = document.getElementsByClassName('task');
  
  var mouseOrigin;
  var isSwiping = false;
  var mouseRelease;
  var currentTask;
  var swipeMargin=20;
  var originalClassList;
  
  Array.prototype.forEach.call(tasks, function addSwipe(element){
    element.addEventListener('mousedown', startSwipe); 
  });
  
  /* 
    Defined events on document so that a drag or release outside of target 
    could be handled easily 
  */
  document.addEventListener('mouseup', endSwipe);
  document.addEventListener('mousemove', detectMouse);
  
    
  //STARTSWIPE
  function startSwipe(evt){ 
    mouseOrigin = evt.screenX;
    currentTask = evt.target;
    isSwiping = true;
    originalClassList = evt.target.classList.value;
  }
  
  //ENDSWIPE
  function endSwipe(evt){
    var completedTask;    
    
    if( currentTask.classList.contains("completing") ){
      currentTask.classList.remove("completing");
      currentTask.classList.add("completed");
      list.appendChild(currentTask);
    }
    else if( currentTask.classList.contains("deleting") ){
      currentTask.remove();      
    }      
    
    mouseOrigin = null;
    isSwiping = false;     
    currentTask.style.margin = 0;
    currentTask = null;
  }
  
  //DETECTMOUSE
  function detectMouse(evt){
    var currentMousePosition = evt.screenX;
    var swipeDifference = Math.abs(mouseOrigin - currentMousePosition)
    
    if(isSwiping && currentTask && (swipeDifference > swipeMargin) ){ 
      if( (swipeDifference-swipeMargin) <= swipeMargin ){
        //no change, allows user to take no action
        currentTask.classList.remove("completing");
        currentTask.classList.remove("deleting");
        currentTask.style.margin = 0;
      }
      else if( mouseOrigin > currentMousePosition ){
        //swipe left        
        currentTask.classList.remove("completing");
        currentTask.classList.add("deleting");
        currentTask.style.marginLeft = -swipeDifference+"px";
      }
      else if( (mouseOrigin < currentMousePosition) &&
                !currentTask.classList.contains("completed") ){
        //swip right");
        currentTask.classList.remove("deleting");
        currentTask.classList.add("completing");
        currentTask.style.marginLeft = swipeDifference+"px";
      }
    }
  }  
  
})();
            
          
!
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