JSP页面里得计算问题 求帮助

<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<jsp:directive.page import="dao.*"/>
<jsp:directive.page import="domain.*"/>
<%
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%>">
    
    <title>My JSP 'ka_xiao_record_add.jsp' starting page</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">
-->    <style type="text/css">
<!--
.style1 {color: #FF0000}
.style3 {
font-family: Arial, Helvetica, sans-serif;
font-size: 36px;
color: #0000FF;
}
-->
    </style>
    
  </head>
  
  <body>
  <h1 align="center" class="style3"> 卡销售 录入</h1>              <td align="center">
  <form action="ka_xiao" method="post" name="ka_xiao">
  <table width="923"  border="0" cellspacing="-2" cellpadding="-2" height="329">
<tr>
                  <td valign="top"><br></td><td width="28%" height="30" align="center">时&nbsp;&nbsp;间：</td>
                  <td width="82%" class="word_grey"><input name="DAY" type="text" id="date" >
                    <span class="style1">日期格式：YYYY-MM-DD(请注意填写正确的日期格式）</span> </td>
                </tr>
               
                
                <tr>
                  <td valign="top"><br></td><td height="28" align="center">价&nbsp;&nbsp;格：</td>
                  <td class="word_grey"><input name="MONEY" type="text" id=""  >
                    <span class="style1">元/张</span></td>
                </tr>
                <tr>
                  <td valign="top"><br></td><td height="28" align="center">总 &nbsp;&nbsp;数</td>
                  <td height="28"><input name="AMOUNT" type="text" onblur='autocount()' >
      </td>
                </tr>
                <script type="text/javascript">
                function autocount(){
                var AMOUN=document.getElementById('AMOUN').value;
                var MONEY=document.getElementById('MONEY').value;
               
                document.getElementById('TOTAL_MONEY').value=AMOUN*MONEY;
                }
                </script>
                <tr>
                  <td valign="top"><br></td><td height="28" align="center">TOTAL_MONEY：</td>
                  <td><input name="TOTAL_MONEY" type="text" id="" readonly="ture"   ></td>
                </tr>
                <tr>
                  <td valign="top"><br></td><td height="28" align="center" style="padding-left:10px">DIS_TO_MONEY：</td>
                  <td class="word_grey"><input name="DISCOUNT_TOTAL_MONEY" type="text" id="" size="50">
      </td>
                </tr>  
                <tr>
                  <td valign="top"><br></td><td height="34">&nbsp;</td>
                  <td ><input name="Submit" type="submit"  value="确定提交"  onclick=="return autocount(myform)"><input type="hidden" name="change" value="insert"/>
                      <input name="Submit2" type="reset"  value="重新填写"></td>
                </tr>
              </table>
  </form>
  </body>
</html>
  要求当我输入 价格  总数 之后 TOYALY_MONEY会显示计算出的总价格    这是JSP 部分代码  谁有时间 帮我看看  能不等达到我想要得效果  会加分得  

解决方案 »

  1.   

      在TOYALY_MONEY 框上加个onblur事件 去调你的计算方法
      

  2.   

    不过你需要为那几个元素添加ID属性：<input name="MONEY" type="text" id="MONEY" >
    <input id="AMOUNT" name="AMOUNT" type="text" onblur='autocount()' >
    <input id="TOTAL_MONEY" name="TOTAL_MONEY" type="text" id="" readonly="ture" >另外，document.getElementById('TOTAL_MONEY').value=AMOUN*MONEY;改成如下形式：
    document.getElementById('TOTAL_MONEY').value=Math.floor(AMOUN)*Math.floor(MONEY);
      

  3.   

    这个跟jsp没有什么关系啊，就是JS的计算嘛。
    写个方法用来计算总和，然后将这个方法写到各个成员框的onchange方法里。
      

  4.   

    js实现的 答案在3楼
    当光标离开某个框就触发js里面写的方法计算值并填写到另外一个框上
      

  5.   

    楼主 你狠粗心<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
    <jsp:directive.page import="dao.*"/>
    <jsp:directive.page import="domain.*"/>
    <%
    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%>">
        
      <title>My JSP 'ka_xiao_record_add.jsp' starting page</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">
    -->  <style type="text/css">
    <!--
    .style1 {color: #FF0000}
    .style3 {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 36px;
    color: #0000FF;
    }
    -->
      </style>
        <script type="text/javascript">
      function autocount(){
      var AMOUN=document.getElementById('AMOUNT').value;
      var MONEY=document.getElementById('MONEY').value;
        
      document.getElementById('TOTAL_MONEY').value=AMOUN*MONEY;
      }
      </script>    
      </head>
       
      <body>
      <h1 align="center" class="style3"> 卡销售 录入</h1>  <td align="center">
    <form action="ka_xiao" method="post" name="ka_xiao">
    <table width="923" border="0" cellspacing="-2" cellpadding="-2" height="329">
    <tr>
      <td valign="top"><br></td><td width="28%" height="30" align="center">时&nbsp;&nbsp;间：</td>
      <td width="82%" class="word_grey"><input name="DAY" type="text" id="date" >
      <span class="style1">日期格式：YYYY-MM-DD(请注意填写正确的日期格式）</span> </td>
      </tr>
        
        
      <tr>
      <td valign="top"><br></td><td height="28" align="center">价&nbsp;&nbsp;格：</td>
      <td class="word_grey"><input id="MONEY" name="MONEY" type="text" id="" >
      <span class="style1">元/张</span></td>
      </tr>
      <tr>
      <td valign="top"><br></td><td height="28" align="center">总 &nbsp;&nbsp;数</td>
      <td height="28"><input id="AMOUNT" name="AMOUNT" type="text" onblur='autocount()' >
      </td>
      </tr>
      <tr>
      <td valign="top"><br></td><td height="28" align="center">TOTAL_MONEY：</td>
      <td><input id="TOTAL_MONEY" name="TOTAL_MONEY" type="text" id="" readonly="ture" ></td>
      </tr>
      <tr>
      <td valign="top"><br></td><td height="28" align="center" style="padding-left:10px">DIS_TO_MONEY：</td>
      <td class="word_grey"><input name="DISCOUNT_TOTAL_MONEY" type="text" id="" size="50">
      </td>
      </tr>   
      <tr>
      <td valign="top"><br></td><td height="34">&nbsp;</td>
      <td ><input name="Submit" type="submit" value="确定提交" onclick=="return autocount(myform)"><input type="hidden" name="change" value="insert"/>
      <input name="Submit2" type="reset" value="重新填写"></td>
      </tr>
      </table>
    </form>
      </body>
    </html>