Pen Settings

HTML

CSS

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

JavaScript

Babel is required to process package imports. If you need a different preprocessor remove all packages first.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Behavior

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML

              
                <html>
  <head>
  </head>
  <body>
    <h1>click anywhere</h1>
  </body>
</html>
              
            
!

CSS

              
                // explosion container
.explosion {
  position: absolute; // required if positioned on click else 'relative'
  width: 600px;
  height: 600px;
  pointer-events: none; // make it clickable trhough
  // particle styling
  .particle {
    position: absolute; // required  
    width: 10px;
    height: 10px;
    border-radius: 50%;
    animation: pop 1s reverse forwards; // required
  }
}

// animation for particle fly away from the cursor
@keyframes pop {
  from {
    opacity: 0;
  }
  to {
    top: 50%;
    left: 50%;
    opacity: 1;
  }
}

/// DEMO styling
html, body {
  height: 100%;
  background: #000;
}
h1 {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -100%);
  color: #CCC;
  font-family: "Helvetica", "Arial", sans-serif;
  user-select: none;
  -webkit-touch-callout: none; /* iOS Safari */
  -webkit-user-select: none;   /* Chrome/Safari/Opera */
  -moz-user-select: none;      /* Firefox */
  cursor: default;
}
              
            
!

JS

              
                // click event listener
$('body').on('click', function(e) {
  explode(e.pageX, e.pageY);
})

// explosion construction
function explode(x, y) {
  var particles = 15,
    // explosion container and its reference to be able to delete it on animation end
    explosion = $('<div class="explosion"></div>');

  // put the explosion container into the body to be able to get it's size
  $('body').append(explosion);

  // position the container to be centered on click
  explosion.css('left', x - explosion.width() / 2);
  explosion.css('top', y - explosion.height() / 2);

  for (var i = 0; i < particles; i++) {
    // positioning x,y of the particle on the circle (little randomized radius)
    var x = (explosion.width() / 2) + rand(80, 150) * Math.cos(2 * Math.PI * i / rand(particles - 10, particles + 10)),
      y = (explosion.height() / 2) + rand(80, 150) * Math.sin(2 * Math.PI * i / rand(particles - 10, particles + 10)),
      color = rand(0, 255) + ', ' + rand(0, 255) + ', ' + rand(0, 255), // randomize the color rgb
        // particle element creation (could be anything other than div)
      elm = $('<div class="particle" style="' +
        'background-color: rgb(' + color + ') ;' +
        'top: ' + y + 'px; ' +
        'left: ' + x + 'px"></div>');

    if (i == 0) { // no need to add the listener on all generated elements
      // css3 animation end detection
      elm.one('webkitAnimationEnd oanimationend msAnimationEnd animationend', function(e) {
        explosion.remove(); // remove this explosion container when animation ended
      });
    }
    explosion.append(elm);
  }
}

// get random number between min and max value
function rand(min, max) {
  return Math.floor(Math.random() * (max + 1)) + min;
}
              
            
!
999px

Console