css3 to achieve shock wave effect-CSS Tutorial-php.cn

css3 to achieve shock wave effect

小云云

Release： 2018-01-13 10:00:17

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This article mainly introduces the sample code of CSS3 to achieve shock wave effect. The editor thinks it is quite good. Now I will share it with you and give it as a reference. Let’s follow the editor to take a look, I hope it can help everyone.

Recently, the following shock wave effect will appear when clicking many browser buttons. Out of curiosity, I studied and implemented this effect by referring to the information on the Internet.

Implementation ideas:

Observe that the wave changes from small to large, and the css3 attribute changes involved include width, height, left, top , opacity, first realize the shock wave layer through pseudo-class, and at the same time, you need to set the center point position before and after the shock wave (a little mathematical knowledge is involved here: draw a picture to calculate the position of two points), and finally set transition-duration: 0 to achieve instantaneous changes, ps learning You can use a:active to simulate the mouse click effect

Simply draw the following picture (very easy):

Implemented code:

  <html>
  <head>
  <meta charset="UTF-8">
  <title>实现冲击波--数学知识很重要</title>
  <style>
  *{
  margin:0;
  padding:0;
  box-sizing:border-box;
  }
  html,body{
  font-family:"微软雅黑";
  }
  .wave{
  position:relative;
  float:left;
  width:50%;
  height:420px;
  }
  .wave a{
  position:absolute;
  top:50%;
  left:50%;
  transform:translate(-50%,-50%);
  display:inline-block;
  width:120px;
  height:50px;
  /*margin-left:-60px;
  margin-top:-25px;*/
  line-height:50px;
  text-align:center;
  border-radius:5px;
  color:#fff;
  font-size:16px;
  cursor:pointer;
  /*overflow:hidden;*/
  
  }
  #wave1{
  background-color:#00BFFF;
  }
  #wave2{
  background-color:#009955;
  }
  #wave1 a{
  background-color:burlywood;
  }
  #wave2 a{/*宽度不确定长度*/
  width:50%;
  height:50px;
  background-color:cadetblue;
  }
  .wave a:after{
  /*画图
 ，假设left:0;top:0然后画出两个中心点的水平和垂直距离*/
  content: "";
  display: block;
  position: absolute;
  left: -40px;
  top: -75px;
  width: 200px;
  height: 200px;
  background: rgba(255,255,255,0.8);
  border-radius: 50%;
  opacity:0;
  transition: all 1s;
  }
  .wave a:active:after{
  /*位于中间即是a的中点*/
  width: 0; 
  height: 0; 
  left:60px; 
  top: 25px;
  opacity: 1; 
  transition-duration: 0s;
  }
  
  #wave2 a:after{
  left:50%;
  top:50%;
  transform:translate(-50%,-50%);
  }
  #wave2 a:active:after{
  left:50%;
  top:50%;
  transform:translate(-50%,-50%);
  }
  </style>
  </head>
  <body>
  <!--实现冲击波按钮确定长度-->
  <p class="wave" id="wave1">
  <a>点我</a>
  </p>
  <!--实现冲击波按钮不确定长度时-->
  <p class="wave" id="wave2">
  <a>点我哈哈</a>
  </p>
  </body>
  </html>

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Achieved effect:

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