JS makes a floating layer effect pop up when the mouse passes over the text-JS Tutorial-php.cn

JS makes a floating layer effect pop up when the mouse passes over the text

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Release： 2018-06-14 10:18:59

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This time I will bring you JS to make a special effect of a floating layer popping up when the mouse passes over text. What are the precautions for making a special effect of popping up a floating layer when the mouse passes over text with JS? Here is a practical case, let's take a look.

For example, the CSDN notification (should be the bell at the top of the page after entering the page to write a new article), what is the specific implementation? The above code:

<!doctype html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
 <title>TEST</title> 
</head> 
<style type="text/css"> 
 body{ 
 position: relative; 
 } 
 #inform{ 
  position: absolute; 
  top: 20px; 
  width: 350px; 
  max-height: 250px; /* 设置最大高度，当高度达到此值时出现滚动条 */ 
  z-index: 10; 
  background-color: #E0E5E5; 
  overflow: auto;  /* 自动添加滚动条 */ 
  box-shadow:0px 0px 10px #000; /* 外阴影 */ 
  display: none; /* 默认隐藏 */ 
 } 
 #informTable{ 
 table-layout:fixed;  /* 用于实现表格td自动换行的部分代码*/ 
 width: 325px; 
 } 
 
 #informTable tr td{ 
 width: 325px; 
 height:30px; 
 font-size: 16px; 
 font-family: Georgia; 
 color: #555555; 
 word-wrap:break-word; /*自动换行*/ 
 padding: 0 0 0 0; 
 } 
 #informTable tr td:hover{ 
 background-color: #D9D9D9; 
 } 
 #inform hr{ 
 border:1; 
 width: 325px; 
 margin-bottom: 0px; 
 } 
 
</style> 
<script type="text/javascript"> 
 //显示悬浮层 
 function showInform(){ 
 document.getElementById("inform").style.display='block'; 
  // document.getElementById("inform").css("display","block"); 
 } 
 //隐藏悬浮层 
 function hiddenInform(event){ 
  var informp = document.getElementById('inform'); 
  var x=event.clientX; 
  var y=event.clientY; 
  var px1 = informp.offsetLeft; 
  var py1 = informp.offsetTop; 
  var px2 = informp.offsetLeft + informp.offsetWidth; 
  var py2 = informp.offsetTop + informp.offsetHeight; 
  if( x < px1 || x > px2 || y < py1 || y > py2){ 
  document.getElementById('inform').style.display='none'; 
  } 
  
 } 
 
 
</script> 
<body> 
 <a id="btn" onMouseOver="javascript:showInform();" onMouseOut="hiddenInform()"> 
 警告消息 
 </a> 
 <p id="inform" onMouseOver="javascript:showInform();" onMouseOut="hiddenInform(event)"> 
  <table id="informTable"> 
  <tr> 
  <td> 
   编号5005车辆发车间隔异常 
   <hr/> 
  </td> 
  </tr> 
  <tr> 
  <td> 
   编号5005车辆发车间隔异常 
   <hr/> 
  </td> 
  </tr> 
  <tr> 
  <td> 
   编号5005车辆发车间隔异常 
   <hr/> 
  </td> 
  </tr> 
  <tr> 
  <td> 
   编号5005车辆发车间隔异常 
   <hr/> 
  </td> 
  </tr> 
  <tr> 
  <td> 
   编号5005车辆发车间隔异常 
   <hr/> 
  </td> 
  </tr> 
  <tr> 
  <td> 
   编号5005车辆发车间隔异常 
   <hr/> 
  </td> 
  </tr> 
  <tr> 
  <td> 
   编号5005车辆发车间隔异常 
   <hr/> 
  </td> 
  </tr> 
  <tr> 
  <td> 
   编号5005车辆发车间隔异常 
   <hr/> 
  </td> 
  </tr> 
  </table> 
 </p> 
</body> 
</html>

Copy after login

The rendering is as follows:

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related matters on the PHP Chinese website article!