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  • JS 使用JS操作CSS动画

    <!-- webkfa.com -->
    <!DOCTYPE html>
    <html>
      <head>
    	<meta charset="utf-8" />
    	<meta name="apple-touch-fullscreen" content="YES" />
    	<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no" />
    	<meta name="apple-mobile-web-app-capable" content="yes" />
    	<meta name="format-detection" content="telephone=no" />
    	<title>js直接操作css3属性transition和webkitTransform实现动画</title>
      </head>
      
      <body>
      	<input type="button" value="往下" onclick="xia(100);"/>
      	<input type="button" value="往上" onclick="shang(0);"/>
        <div style="50px;height:50px;background:red;" id="webkfaid"></div>
        <script type="text/javascript">
        	function xia(sum){
        		var obj=document.getElementById("webkfaid");
        		obj.style.transition="-webkit-transform 500ms ease-out";
    			obj.style.webkitTransform="translate(0px,"+sum+"px) scale(1) translateZ(0px)";
        	}
        	function shang(sum){
        		var obj=document.getElementById("webkfaid");
        		obj.style.transition="-webkit-transform 500ms ease-out";
    			obj.style.webkitTransform="translate(0px,"+sum+"px) scale(1) translateZ(0px)";
        	}
        </script>
      </body>
    </html>
    

      摘自 http://www.webkfa.com/one4/w648.html

    而使用CSS创建动画的时候,写法如下:

    <!DOCTYPE html>
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>CSS3 animation-duration属性</title>
        <style type="text/css">
            @-webkit-keyframes mytranslate
            {
                0%{}
                100%{-webkit-transform:translateX(100px);}
            }
            div:not(#container)
            {
                40px;
                height:40px;
                border-radius:20px;
                background-color:red;
                -webkit-animation-name:mytranslate;
                -webkit-animation-timing-function:linear;
            }
            #container
            {
                display:inline-block;
                140px;
                border:1px solid silver;
            }
            #div1{-webkit-animation-duration:2s;margin-bottom:10px;}
            #div2{-webkit-animation-duration:4s;}
        </style>
    </head>
    <body>
        <div id="container">
            <div id="div1"></div>
            <div id="div2"></div>
        </div>
    </body>
    </html>
    

      CSS动画的几个属性,若是不需要任何行为触发动画,将在元素的样式中调用动画名称。代码如下:

     #div1
            {
                40px;
                height:40px;
                border-radius:20px;
                background-color:red;
                -webkit-animation-name:mytranslate;/*调用动画名称*/
                -webkit-animation-timing-function:linear;/*动画变换方式*/
                -webkit-animation-duration:2s;/*动画持续时间*/
                -webkit-animation-iteration-count:infinite;/*若是将infinite改为n,n为整数,就是循环几次。*/
              -webkit-animation-delay:.5s;/*动画延迟时间,表示动画延迟多少秒开始执行,默认为0*/
              -webkit-animation-direction:reverse;/*动画播放方向,属性取值有3个,normal	每次循环都向正方向播放(默认值)
                reverse每次循环都向反方向播放;alternate播放次数是奇数时,动画向原方向播放;播放次数是偶数时,动画向反方向播放*/
    } @-webkit-keyframes mytranslate { 0%{} 100%{-webkit-transform:translateX(100px);} }

     CSS动画的总结

     

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  • 原文地址:https://www.cnblogs.com/potato-lee/p/6120762.html
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