How to use jQuery to implement mouse-responsive transparency gradient animation effect-JS Tutorial-php.cn

How to use jQuery to implement mouse-responsive transparency gradient animation effect

亚连

Release： 2018-06-05 17:39:25

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This article mainly introduces jQuery to implement mouse-responsive transparency gradient animation effect, involving jQuery event response and dynamic modification of page element attributes related operating techniques. Friends in need can refer to the following

This article describes the jQuery example Implement mouse-responsive transparency gradient animation effect. Share it with everyone for your reference, the details are as follows:

Let’s take a look at the running effect first:

The specific code is as follows:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>js动画-透明度变化</title>
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.js"></script>
<style>
* {
  margin: 0;
  padding: 0;
  font-family:"微软雅黑"
}
#box{
  height:100px;
  width:100px;
  background-color:#0099CC;
  margin-top:200px;
  position:relative;
  /*透明度变化*/
  left:0px;
  filter:alpha(opacity:30);
  opacity:0.3;
}
span{
  display:block;
  color:blue;
  width:25px;
  height:100px;
  background-color:#FFFF99;
  position:absolute;
  left:100px;
}
</style>
</head>
<body>
  <p id="box">
    <span>移动</span>
  </p>
<script>
window.onload=function(){
  var p1=document.getElementById("box");
  p1.onmouseover=function(){
    startMove(100);
  }
  p1.onmouseout=function(){
    startMove(30);
  }
}
var timer=null;
var alpha=30;
function startMove(itarget){
  clearInterval(timer);
  var p1=document.getElementById("box");
  timer=setInterval(function(){
    var speed=0;
    if(alpha>itarget){
      speed=-10;
    }else{
      speed=10;
    }
    if(alpha==itarget){
      clearInterval(timer);
    }else{
      alpha+=speed;
      p1.style.filter="alpha(opacity:"+alpha+")";
      p1.style.opacity=alpha/100;
    }
  },100)
}
</script>
</body>
</html>

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Above I compiled it for everyone. I hope it will be helpful to everyone in the future.

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