Home Web Front-end HTML Tutorial HTML5+CSS3鼠标移入移出图片生成随机动画_html/css_WEB-ITnose

HTML5+CSS3鼠标移入移出图片生成随机动画_html/css_WEB-ITnose

Jun 24, 2016 am 11:25 AM

今天分享使用html+css3+少量jquery实现鼠标移入移出图片生成随机动画,我们先看最终效果图(截图为静态效果,做出来可是动态的哟)

 

左右旋转

 

上下移动

缩放

由于时间关系我就不一步步解析各段代码所代表含义,我这里就给出一些思路及关键代码:

1、首先使用ul li展现4张图片

本示例中不仅使用了图片,在图片表面还放置了一段“WEB”字样文字,用于与图片实现隐藏或显示效果,故html中每张图片上方加入:

<div class="mytext">WEB</div>
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2、CSS控制图片及文字透明度

本示例中一组图片与文字同时放在一个li里面,高度与宽度设置与li一样大,并使用绝对定位固定它们的位置:

#myimg ul li a div {position: absolute;top: 0;left: 0;width: 100%;height: 100%;text-align: center;font-size: 40px;}
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默认将隐藏图片,只显示文字,鼠标放入li时显示图片,这里使用opacity透明度属性控制:

#myimg ul li a div.pic {opacity: 0;}#myimg ul li:hover a div.pic {opacity: 1;}
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3、CSS3自定义动画

本示例中用css3定义了3种动画:

 @keyframes rot /*自定义 旋转动画*/                        { 0% 20% 40% 60% 80% 100% { transform-origin: top center;                } 0% { transform: rotate(0deg) } 20% { transform: rotate(-20deg) } 40% { transform: rotate(15deg) } 60% { transform: rotate(-10deg) } 80% { transform: rotate(5deg) } 100% { transform: rotate(0deg) } } @keyframes top /*自定义 上下动画*/                        { 0% { top: 0 } 20% { top: 20px } 40% { top: -15px } 60% { top: 10px } 80% { top: -5px } 100% { top: 0px } } @keyframes sca /*自定义 缩放动画*/                        { 0% { transform: scale(1) } 20% { transform: scale(1.1) } 40% { transform: scale(0.9) } 60% { transform: scale(1.05) } 80% { transform: scale(0.95) } 100% { transform: scale(1) } }
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使用css执行上述自定义动画:

#myimg ul li.rot {animation: rot 1s;}#myimg ul li.top {animation: top 1s;}#myimg ul li.sca {animation: sca 1s;}
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4、Jquery生成随机动画

当鼠标移入ul li时,使用jquery随机产生上述3种自定义动画,这里使用hover事件

HTML代码如下:

CSS代码如下:

<style type="text/css"> * { padding: 0; margin: 0;            } #myimg { width: 800px; margin: 20px auto;            } #myimg ul li { list-style-type: none; position: relative; float: left; width: 350px; height: 200px; line-height: 200px; margin: 20px;            } #myimg ul li.rot { animation: rot 1s;            } #myimg ul li.top { animation: top 1s;            } #myimg ul li.sca { animation: sca 1s;            } #myimg ul li:hover a div.pic { opacity: 1;            } #myimg ul li a { text-decoration: none; color: white;            } #myimg ul li a div { position: absolute; top: 0; left: 0; width: 100%; height: 100%; text-align: center; font-size: 40px;            } #myimg ul li a div.pic { opacity: 0;            } #myimg ul li:nth-child(1) a div.mytext { background: black;            } #myimg ul li:nth-child(2) a div.mytext { background: blue;            } #myimg ul li:nth-child(3) a div.mytext { background: darkred;            } #myimg ul li:nth-child(4) a div.mytext { background: orange;            } @keyframes rot /*自定义 旋转动画*/                        { 0% 20% 40% 60% 80% 100% { transform-origin: top center;                } 0% { transform: rotate(0deg) } 20% { transform: rotate(-20deg) } 40% { transform: rotate(15deg) } 60% { transform: rotate(-10deg) } 80% { transform: rotate(5deg) } 100% { transform: rotate(0deg) } } @keyframes top /*自定义 上下动画*/                        { 0% { top: 0 } 20% { top: 20px } 40% { top: -15px } 60% { top: 10px } 80% { top: -5px } 100% { top: 0px } } @keyframes sca /*自定义 缩放动画*/                        { 0% { transform: scale(1) } 20% { transform: scale(1.1) } 40% { transform: scale(0.9) } 60% { transform: scale(1.05) } 80% { transform: scale(0.95) } 100% { transform: scale(1) } } </style>
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Jquery代码如下:

<script type="text/javascript"> $(function() { var anim = ['rot', 'top', 'sca']; var a, b; $("#myimg ul li").hover(function() { //向下取0-2整数                    a = anim[Math.floor(Math.random() * 3)]; while (b == a) { a = anim[Math.floor(Math.random() * 3)]; } $(this).addClass(a); b = a; }, function() { $(this).removeClass(a); }) }); </script>
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注意事项:需要引入jquery文件,可以自行选择jquery版本

好了,今天分享就到这里,以后还有更多哟,请大家一起来交流下

 

 

 

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