如何传值

Question

就是菜单1和菜单2的选项都显示如菜单1选  中国   菜单2选   广东  ，那hiddenfield的值就是 中国广东

Answer 1

菜单2.attachEvent("onchange",function (){hiddenfield.value=菜单1.value+菜单2.value});

Answer 2

<script language = "JavaScript"> 
sall=new Array();
sall[0]=new Array("泉州","1","1");
sall[1]=new Array("厦门","1","2");
sall[2]=new Array("福州","1","3");
sall[3]=new Array("石狮","1","4");
sall[4]=new Array("武汉","2","5");
sall[5]=new Array("沙市","2","6");
sall[6]=new Array("孝感","2","7");
sall[7]=new Array("信阳","3","8");
sall[8]=new Array("郑州","3","9");
sall[9]=new Array("南阳","3","10");
function changeselect(sel)  
{ 
      document.myform.Nclassid.length=0;
      var selvalue=sel.value;
      var i;
  var newOption1=new Option("请选择","");
  document.all.Nclassid.add(newOption1);
      for(i=0;i<sall.length;i++) 
{
    if(sall[i][1]==selvalue) 
       {
   var newOption1=new Option(sall[i][0],sall[i][2]);
document.all.Nclassid.add(newOption1);
}
}
document.all.seltmp.value=sel.text;
}
function postsel(sel)
{
    document.all.yousel.value=document.all.seltmp.value+sel.text;
}
</script> 
<form method="post" name="myform" action="ru_query.asp"> 
<select name="classid" onChange="changeselect(this.options[this.options.selectedIndex])" size="1"> 
<option selected value="">请选择</option> 
<option value='1'>福建省</option>
<option value='2'>湖北省</option>
<option value='3'>河南省</option>
</select> 
<select name="Nclassid" onchange="postsel(this.options[this.options.selectedIndex])"> 
<option selected value="">请选择</option> 
</select>
<input type=hidden name="seltmp">
<input type=text name="yousel">