有没有办法选了下拉菜单的值之后，文本框就显示值。
我有两个关联菜单。
我想选了后在文本框显示它们的值。
同时在window.open( "info.php?aid=下拉菜单一的值&bid=下拉菜单2的值 ", " ", " ", " ");也有它们的值。
清问怎么做？
[解决办法]
onchange的时候将option的value(或text)保存到全局变量中，然后在需要的地方引用该全局变量的值。
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<script language= "Javascript ">
function fnSetSubItem_Combo(objCombo,objSubCombo,arrSubItems,strDefValue){
var i;
var bFound;
fnClearCombo(objSubCombo);
bFound=false;
for(i=0;i <arrSubItems.length;i++){
if(arrSubItems[i][1] + " " == objCombo.value + " "){
var oOption = document.createElement( "OPTION ");
objSubCombo.options.add(oOption);
oOption.text = arrSubItems[i][2];
oOption.value = arrSubItems[i][0];
if(strDefValue + " " == oOption.value + " "){
oOption.selected=true;
}
bFound=true;
}
}
if(!bFound && objSubCombo.options.length == 0)
objSubCombo.disabled=true;
else
objSubCombo.disabled=false;
//alert(objSubCombo.onchange());
if(objSubCombo.onchange)
objSubCombo.onchange();
}
function fnClearCombo(objCombo){
var i,intLen;
//objCombo.selectedIndex=-1;
if(objCombo.Proced ==1){
intLen=objCombo.options.length;
for(i=0;i <intLen-objCombo.FirstIdx;i++){
objCombo.options[objCombo.FirstIdx]=null;
//objCombo.options.remove(0);
}
}
else{
objCombo.FirstIdx=objCombo.options.length;
objCombo.Proced =1;
}
}
function fnSetCityProv(objParObj,objSubObj,arrCPC){
objSubObj.options.length=0;
//取得当前选中的ID,递归取得所有子ID
for(i=0;i <arrCPC.length;i++){
if(arrCPC[i][0] == objParObj.value){
objSubObj.options[objSubObj.options.length]=new Option(arrCPC[i][2],arrCPC[i][0]);
}
}
fnGetCPCSubItems(objParObj,objSubObj,arrCPC,objParObj.value,0);
}
function fnGetCPCSubItems(objParObj,objSubObj,arrCPC,intParID,intLV){
var i;
var strCaption;
for(i=0;i <arrCPC.length;i++){
if(arrCPC[i][1] == intParID){
switch(intLV){
case 0:strCaption= " -- " + arrCPC[i][2];break;
case 1:strCaption= " -- " +arrCPC[i][2];break;
}
objSubObj.options[objSubObj.options.length]=new Option(strCaption,arrCPC[i][0]);
if(intLV <= 1)
fnGetCPCSubItems(objParObj,objSubObj,arrCPC,arrCPC[i][0],intLV+1)
}
}
}
</script>
<script language= "Javascript ">
//生成数组
function fnCreateArray(intHeight,intWidth){
var i,arrRet;
arrRet=new Array(intHeight);
for(i=0;i <intHeight;i++){
arrRet[i] = new Array(intWidth);
}
return arrRet;
}
</script>
<script language= "Javascript ">
<!--
/****Book Array（图书数组）******/
var arrBook;
arrBook=fnCreateArray(9,3);
arrBook[0][0]= "1 ";//子项value
arrBook[0][1]= "001 ";//父项value
arrBook[0][2]= "少儿科普读物 ";//子项text
arrBook[1][0]= "2 ";
arrBook[1][1]= "001 ";
arrBook[1][2]= "儿童简笔画 ";
arrBook[2][0]= "3 ";
arrBook[2][1]= "001 ";
arrBook[2][2]= "格林童话 ";
arrBook[3][0]= "4 ";
arrBook[3][1]= "001 ";
arrBook[3][2]= "安徒生童话选 ";
arrBook[4][0]= "1 ";
arrBook[4][1]= "002 ";
arrBook[4][2]= "网络程序设计ASP ";
arrBook[5][0]= "2 ";
arrBook[5][1]= "002 ";
arrBook[5][2]= "C++程序设计 ";
arrBook[6][0]= "1 ";
arrBook[6][1]= "003 ";
arrBook[6][2]= "中国茶艺 ";
arrBook[7][0]= "2 ";
arrBook[7][1]= "003 ";
arrBook[7][2]= "毛衣编织300例 ";
arrBook[8][0]= "3 ";
arrBook[8][1]= "003 ";
arrBook[8][2]= "园艺指南 ";
/**************初始化联动下拉框*****************/
function fnStart(){
fnSetSubItem_Combo(document.form1.press,document.form1.book,arrBook, "1 ");
}
window.onload=fnStart;
//-->
</script>
<script>
var select1value= '001 ';
var select2value= '1 ';
var select1text= '少儿出版社 ';
var select2text= '少儿科普读物 ';
function show1(obj,book,arrBook){
fnSetSubItem_Combo(obj,book,arrBook)
select1value=obj.options[obj.selectedIndex].value;
select1text=obj.options[obj.selectedIndex].text;
form1.valueshow.value=select1value+ "- "+select2value;
form1.textshow.value=select1text+ "- "+select2text;
}
function show2(obj){
select2value=obj.options[obj.selectedIndex].value;
select2text=obj.options[obj.selectedIndex].text;
form1.valueshow.value=select1value+ "- "+select2value;
form1.textshow.value=select1text+ "- "+select2text;
}
</script>
</HEAD>
<BODY>
<form name= "form1 ">
书名： <select name= "press " onChange= "show1(this,book,arrBook); " style= "width:120px; ">
<option value= "001 " selected > 少儿出版社 </option> <option value= "002 "> 清华大学出版社 </option> <option value= "003 "> 时代出版社 </option>
</select> <select name= "book " style= "width:150px; " onchange= "show2(this); "> </select> <input name= "valueshow " value= "这里显示值 "> <input name= "textshow " value= "这里显示文本 " size= "50 "> <a href= "# " onclick= "window.open( 'info.php?aid= '+select1value+ '&bid= '+select2value, ' ', 'width=400,height=200 '); "> 链接 </a>
</form>
</BODY>
</HTML>