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Javaweb 鼠标移入移出表格 Javaweb 鼠标移入移出表格颜色变化的实现

灰小猿 人气:0
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最近在学习JavaWeb时,有用到鼠标移动事件,所以今天在这里记录一个相关的案例,同时也是对相关知识的一个巩固,效果为在鼠标移动到表格对应行列时,该行列的背景颜色发生变化。

效果如下:

其中用到是onmouseover和onmouseou事件t,同时还有一个作用相似的事件叫做onmousemove,所以在这里先对这三种鼠标事件做一个简单的对比:

onmouseout事件则是在鼠标移出对象区域时触发。

搞懂这三者之间的关系,在进行鼠标经过事件的处理时只需使用对应的事件触发即可:

接下来是对上述事件和效果的代码:

Jsp部分代码:

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
 <head>
  <base href="<%=basePath%>" rel="external nofollow" >
  
  <title>表格颜色变化</title>
 <meta http-equiv="pragma" content="no-cache">
 <meta http-equiv="cache-control" content="no-cache">
 <meta http-equiv="expires" content="0">  
 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
 <meta http-equiv="description" content="This is my page">
 <!--
 <link rel="stylesheet" type="text/css" href="styles.css" rel="external nofollow" >
 -->
 <script type="text/javascript" src="index.js"></script>
 </head>
 
 <body>
  <table width = "200" border = "1" align = "center" cellpadding="1" cellspacing="5">
  <tr id = "t0"><th>学校</th><th>专业</th><th>人数</th></tr>
  <tr id = "t1"><th>济大</th><th>软件</th><th>2000</th></tr>
 <tr id = "t2"><th>北大</th><th>机械</th><th>3000</th></tr>
 <tr id = "t3"><th>浙大</th><th>生物</th><th>4000</th></tr>
 
  </table>
 </body>
</html>

Js部分代码:

onload = function() {
 var t0 = document.getElementById("t0");
 var t1 = document.getElementById("t1");
 var t2 = document.getElementById("t2");
 var t3 = document.getElementById("t3");

 t0.onmouseover = function () {
   t0.style.backgroundColor = "green";
  }
 t0.onmouseout = function () {
   t0.style.backgroundColor = "white";
  }
 t1.onmouseover = function () {
   t1.style.backgroundColor = "red";
  }
 t1.onmouseout = function () {
   t1.style.backgroundColor = "white";
  }
 t2.onmouseover = function () {
   t2.style.backgroundColor = "red";
  }
 t2.onmouseout = function () {
   t2.style.backgroundColor = "white";
  }
 t3.onmouseover = function () {
   t3.style.backgroundColor = "red";
  }
 t3.onmouseout = function () {
   t3.style.backgroundColor = "white";
  }
}

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