[Javascript] struts form using javascript code

Tue Mar 2 08:32:55 CST 2004

Hi
Code below gives me :form.length is null or not an object.
Any tips appreciated.
Tahns

<%@ page language="java"%>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>

<html>
<head>
<style><!--
body,td,a,p,.h{font-family:times new roman,arial,sans-serif;}
.h{font-size: 20px;}
.q{text-decoration:none; color:#0000cc;}
//-->
</style>
<% com.dynetics.gmpm.rad.Principal pl = (com.dynetics.gmpm.rad.Principal) session.getAttribute("principal");
if(pl != null)System.out.println("*** principal is not null");
         if(pl == null) {
          %>
          <jsp:forward page="logout.jsp"/>
          <%
         }
         com.dynetics.gmpm.rad.PrincipalHolder.setPrincipal(pl);
         %>
<SCRIPT LANGUAGE="JavaScript">
var checkflag = "false";
function check(field) {
if (checkflag == "false") {
for (i = 0; i < field.length; i++) {
field[i].checked = true;}
checkflag = "true";
return "Uncheck All"; }
else {
for (i = 0; i < field.length; i++) {
field[i].checked = false; }
checkflag = "false";
return "Check All"; }
}

function set(target) {document.forms[0].dispatch.value=target;}
</script>
</head>
<body>
<table border="0" width="100%">
   <tr>
   <td bgcolor="00007D"  align="center">
      <font color=white size="6"><b><u>Drivers</u></b></font>
    </td>
</tr>
</table>
<table>
   <tr>
<td align="right">
      <input type="hidden" name="finalDeleteArray"
                    value="return getCheckedItems();">
                    <input type="button" name="Delete" value= "Delete" onClick="getCheckedItems()">    
    </td>
  <td align="right">
      <a href="driver_new.jsp" target="frame_main"><input type="button" name="Add" value= "Add" onClick="window.location.href='driver_new.jsp'"></a>
    </td>

    </tr>
</table>
<html:form action="display" name="displayForm" type="com.servlet.DisplayForm" >  
<table border="1" width="100%">

<tr>
<th><input type=checkbox name="d_all" value="Check All" onClick="check(this.form.list)"></th>
<th><a href="drivers.jsp">Last name</a></th>
<th><a href="drivers.jsp">First Name</a></th>
<th><a href="drivers.jsp">Middle Name</a></th>
<th><a href="drivers.jsp">Clock #</a></th>

</tr>
<tr align="left">
      <td align="center"><!--input type=checkbox name="list"-->
      <input type=checkbox name="list" value="0">
      </td>
   <td align="center">
            Smith
   </td>
   <td align="center">
            Ashley
   </td>
   <td align="center">
            K
   </td>
   <td align="center">
            <a href="driverDisplay.do?employeeID=asmith">
       asmith
       </a>
   </td>
   <td align="center">

   </td>
   <td align="center">
            new driver
   </td>
</tr>

      <tr align="left">
      <td align="center"><!--input type=checkbox name="list"-->
      <input type=checkbox name="list" value="1">
      </td>
   <td align="center">
            David
   </td>
   <td align="center">
            John
   </td>
   <td align="center">
            V
   </td>
   <td align="center">
            <a href="driverDisplay.do?employeeID=jdavid">
       jdavid
       </a>
   </td>
   <td align="center">

   </td>
   <td align="center">
            Novice
   </td>
</tr>

      <tr align="left">
      <td align="center"><!--input type=checkbox name="list"-->
      <input type=checkbox name="list" value="2">
      </td>
   <td align="center">
            Doe
   </td>
   <td align="center">
            John
   </td>
   <td align="center">
            K
   </td>
   <td align="center">
            <a href="driverDisplay.do?employeeID=jdoe">
       jdoe
       </a>
   </td>
   <td align="center">
            Doe, John K(jdoe)
   </td>
   <td align="center">
            novice
   </td>
</tr>
</table>
</html:form> 
<SCRIPT LANGUAGE="JavaScript">
function getCheckedItems()
{
  var value = false;
  menus = new Array;
  var msg = "";
  var checkBoxes = driversDisplayForm.elements["list"];

for(var i = 0; i < checkBoxes.length; i++)
  {
    if(checkBoxes[i].checked)
    {
      menus = menus+","+i;

 value = true;    
    }
  }
menusChopped = menus.substr(1,menus.length-1);//chop leading comma
deleteArray = new Array;
deleteArray  = menusChopped.split(",");
finalDeleteArray  = new Array;

 for (i=0;i<deleteArray.length;i++){
  finalDeleteArray[i]= deleteArray[i];
  alert(finalDeleteArray[i]);
 }

if(!value)
    alert("Check at least one of the checkboxes, thanks.");

//this.form.action="http://myserver.com/searchById/submit.do";//fix this
//window.location.href='deleteDriver.do';
return finalDeleteArray;
}
</script>

</body>
</html>

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