cssAudio - Activefile-genericCSS - ActiveGeneric - ActiveHTML - ActiveImage - ActiveJS - ActiveSVG - ActiveText - Activefile-genericVideo - ActiveLovehtmlicon-new-collectionicon-personicon-teamlog-outoctocatpop-outspinnerstartv

Pen Settings

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

You're using npm packages, so we've auto-selected Babel for you here, which we require to process imports and make it all work. If you need to use a different JavaScript preprocessor, remove the packages in the npm tab.

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

Use npm Packages

We can make npm packages available for you to use in your JavaScript. We use webpack to prepare them and make them available to import. We'll also process your JavaScript with Babel.

⚠️ This feature can only be used by logged in users.

Code Indentation

     

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.

            
              <div class="container">
	<div class="demo demo0">	
		<h4>display + transition 强制重绘 offsetHeight</h4>
		<div class="box box0"></div>
		<button id="btn0">active</button>
	</div>
	
	<div class="demo demo1">	
		<h4>Visibility + transition</h4>
		<div class="box box1"></div>
		<button id="btn1" class="btn">active</button>
	</div>
	
	<div class="demo demo2">	
		<h4>transitionEnd</h4>
		<div class="box box2" id="box2"></div>
		<button id="btn2" class="btn">active</button>
	</div>
	
	<div class="demo demo3">	
		<h4>-webkit-animation-direction</h4>
		<select id="direction" class="info_panel">
			<option value="normal">normal</option>
			<option value="alternate">alternate</option>
			<option value="alternate-reverse">alternate-reverse</option>
			<option value="reverse">reverse</option>
		</select>
		<div class="box box3 active" id="box3"></div>
	</div>
	
	<div class="demo demo4">	
		<h4>-webkit-animation-iteration-count</h4>
		<select id="transCountSlt" class="info_panel">
			<option value="infinite">infinite</option>
			<option value="1">1</option>
			<option value="2.5">2.5</option>
		</select>
		<div class="box box4 active" id="box4"></div>
	</div>
	
	
	<h4>Hover over the container to apply the animations to the elements.</h4>
	<strong>animation-fill-mode: none/forwards/backwards/both</strong>
	<div class="demo demo5">
		
  <div class="module">
    <p><code>none</code></p>
    <div class="wrapper">
      <div class="element element-1"></div>
    </div>
  </div>
		
  <div class="module">
    <p><code>forwards</code></p>
    <div class="wrapper">
      <div class="element element-2"></div>
    </div>
  </div>
		
  <div class="module">
    <p><code>backwards</code></p>
    <div class="wrapper">
      <div class="element element-3"></div>
    </div>
  </div>
		
  <div class="module">
    <p><code>both</code></p>
    <div class="wrapper">
      <div class="element element-4"></div>
    </div>
  </div>
		
</div>
	
	
	
	<div class="demo demo6" id="demo6">	
		<h4>animation .enter .leave</h4>
		<div class="box6" id="box6"></div>
	</div>
	
	
</div>




            
          
!
            
              html,body{height: 100%;} * { box-sizing: border-box; }
.container { display: flex; justify-content: center; align-items: center; min-height: 100%; flex-direction: column; padding-top: 20px;}

.demo {
	border: 1px solid;
	margin: 20px;
	padding: 30px;
	width: 80%;
	min-height: 150px;
}

.box0{
	width: 100px;height: 100px;
	background: #62D58A; display:none;
	transition-property: width, height, background;
	transition-duration: .2s, .3s, .4s;
	&.active{
		width: 200px; height: 150px;
		background: #78B715;
	}
}

.box1 {
	width: 0;
	height: 0;
	background: #000;
	visibility: hidden;
	transition: all .3s;
}
.box1.active{
	visibility: visible;
	width: 200px;
	height: 150px;
	background: red;
}

.box2 {
	width: 100px; height: 100px; border-radius:50%;
	background: #07c; transition: all .3s .5s;
	&.active{
		transform: translateX(100px);
		background: red;
		width: 120px;
	}
}

.box3, .box4 {
	width: 50px; height: 50px; background: #00BD9C;
}
.box3.active, .box4.active {
	animation: ani-trans 1.5s linear infinite .5s;
}
@keyframes ani-trans {
	form{ transform: translate3d(0,0,0)}
	to { transform: translate3d(300px, 0, 0)}
}
.box6{
	width: 100px;height: 100px;background: #000;
	&.enter{
		animation: ani-trans-enter 2s both;
	}
	&.leave{
		animation: ani-trans-leave 2s both;
	}
}

@keyframes ani-trans-enter{
	0%{ transform: translate3d(0,0,0)}
	100% { transform: translate3d(300px, 0, 0)}
}
@keyframes ani-trans-leave {
	0% { transform: translate3d(300px, 0, 0)}
	100%{ transform: translate3d(0,0,0)}
}

.demo5 {
	display: flex;
	justify-content: center;
	align-items: center;
	padding:0 10px;
	.module{
		height: 100px;
		flex: 1;
		margin: 10px;
		p{ text-align: center; }
		.wrapper {
			border:1px dashed #d6d6d6;
			border-radius: 5px;
			height: 80px;
			.element {
				border-radius: 5px;
  			background-color: purple;
				height: 100%;
				transform-origin: bottom left;
			}
		}
	}
	
	&:hover .element{
		animation-name: ani-rotate;
		animation-duration: 1s;
		animation-timing-function: cubic-bezier(.18, 1.03, .5, 1.62);
	}
}
.element-1 { animation-fill-mode: none; }
.element-2 { animation-fill-mode: forwards;}
.element-3 { animation-fill-mode: backwards; animation-delay: 1s; }
.element-4 { animation-fill-mode: both; animation-delay: 1s;}

@keyframes ani-rotate {
  0% {
    background-color: orange;
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(90deg);
    background-color: #0099CC;
  }
}
            
          
!
            
              $('.btn').click(function(){
	var $this = $(this);
	$this.prev().toggleClass('active');
})

$('#btn0').click(function(){
	var $this = $(this), $box = $this.prev();
	if($box.hasClass('active')){
		$box.removeClass('active');
		$box[0].offsetHeight = $box[0].offsetHeight;
		$box.one('transitionend',function(){
			$box.css('display','none');
		})
	}else{
		$box.css('display','block');
		$box[0].offsetHeight = $box[0].offsetHeight;
		$box.addClass('active');
		// setTimeout(()=>$box.addClass('active'), 4)
		
	}
})

$('#box2').on('transitionend', function(e){
	console.log(e);
})

$('#direction').on('change', function(e){
	var $box = $('#box3'), oBox = $box[0], v = $(this).val();
	$box.removeClass('active');
	setTimeout(()=>{
		$box.addClass('active');
		oBox.style.animationDirection = v;
		oBox.style.webkitAnimationDirection = v;
	}, 300)
})

$('#transCountSlt').change(function(e){
	var $box = $('#box4'), oBox = $box[0], v = $(this).val();
	$box.removeClass('active');
	setTimeout(()=>{
		$box.addClass('active');
		oBox.style.animationIterationCount = v;
		oBox.style.webkitAnimationIterationCount = v;
	}, 300)
})
// animationIterationCount
$('#demo6').on('mouseenter',function(){
	$('#box6').addClass('enter').removeClass('leave');
}).on('mouseleave', function(){
	$('#box6').addClass('leave').removeClass('enter');
})

            
          
!
999px
🕑 One or more of the npm packages you are using needs to be built. You're the first person to ever need it! We're building it right now and your preview will start updating again when it's ready.
Loading ..................

Console