我要比较两个文本输入框中的值是否相等,怎么取不到值?
<BODY BGCOLOR=#FFFFFF LEFTMARGIN=0 TOPMARGIN=0 MARGINWIDTH=0 MARGINHEIGHT=0 background="../images/1-4.gif">
<form name="form1" method="post" >
<table width="776" height="450" border="0" align="center" cellpadding="1" cellspacing="1" bgcolor="#000066">
<tr>
<td align="center" valign="top" background="../images/back.gif">
<table width="776" height="20" border="0" align=";eft" cellpadding="0" cellspacing="0">
<tr align="right">
<td colspan="3" height="10"></td>
</tr>
<tr>
<td width="93" height="25" background="../images/zyfw.gif"></td>
<td width="634" align="right" bgcolor="#0F2F9E"><img src="../images/count.gif" width="49" height="19" border="0" class="hand" onClick="javascript:addCheck()"></td>
</tr>
<tr align="center">
<td colspan="3">
<table width="775" height="200" border="0" align="center" cellpadding="1" cellspacing="1" bgcolor="#999999">
<tr bgcolor="#FFFFFF">
<td colspan="7" valign="bottom" bgcolor="#EEF4FF" class="blue">
企业代码(*):<input name="cropCode" type="text" class="smallInput" id="cropCode" size="30">
复核:<input name="cropCodeCheck" type="text" class="smallInput" id="cropCodeCheck" size="30"></td>
</tr>
</table></td>
</tr>
</table></td>
</tr>
</table>
<form/>
</BODY>
<script language="JavaScript" >
<!--
function addCheck()
{
if(document.form1.cropCode.value!=document.form1.cropCodeCheck.value)
{
alert("两次输入的企业代码不相同")
}
}
//-->
</script>