关于三级联动的问题！！（急！！！！！！！！！！）

cenpy 2005-05-15 03:55:06

代码如下：
但是为什么报错说secondlist2未定义？
删除第三级用二级联动的是可以的！！！
请大家帮帮忙！！很急！！！！！！！！！！！！！！！！！！1

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>无标题文档</title>
</head>
<SCRIPT>
//(c)2000 Webteacher Software, LLC
//http://www.webteacher.com

platform=window.navigator.appVersion;
ie3=0;
if (platform.indexOf('MSIE 3')>0) {
ie3=1;
}

Fruit=new Array()
Fruit[0]="apple";
Fruit[1]="banana";

Vegetables=new Array()
Vegetables[0]="carrot";

Meat=new Array()
Meat[0]="chicken";
Meat[1]="ham";

apple=new Array()
apple[0]="111111";
apple[1]="112221";

banana=new Array()
banana[0]="fff";

carrot=new Array()
carrot[0]="aa";

chicken=new Array()
chicken[0]="5555";

ham=new Array()
ham[0]="sdfsdf";

function setList(f) {
if (ie3) {
alert('Changable lists do not work with Internet Explorer 3');
return;
};
secondlist=eval(f.list1.options[f.list1.selectedIndex].value);
f.list2.options.length=0;
for(i=0;i<secondlist.length;i++) {
f.list2.options[i]=new Option(secondlist[i]);
};
f.list2.selectedIndex=0;
};

function setList2(f) {
if (ie3) {
alert('Changable lists do not work with Internet Explorer 3');
return;
};
secondlist2=eval(f.list2.options[f.list2.selectedIndex].value);
f.list3.options.length=0;
for(i=0;i<secondlist2.length;i++) {
f.list3.options[i]=new Option(secondlist2[i]);
};
f.list3.selectedIndex=0;
};

</SCRIPT>
<body>
<FORM NAME="listsform">
<SELECT NAME="list1" onChange="setList(form)">
<OPTION VALUE="Fruit" SELECTED>Fruit</OPTION>
<OPTION VALUE="Vegetables">Vegetables</OPTION>
<OPTION VALUE="Meat">Meat</OPTION>
</SELECT>
<SELECT NAME="list2" onChange="setList2(form)">
<OPTION> </OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
</SELECT>
<SELECT NAME="list3">
<OPTION> </OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
</SELECT>
</FORM>
</body>
</html>

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cenpy 2005-05-15

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急啊！！！！！！！！
为什么没人回答我问题呢？？？？

cenpy 2005-05-15

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另外，我想连接上上面的数组信息！不是加上几个a,b！请问如何连接上？

cenpy 2005-05-15

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f.list2.options[i]=new Option(secondlist[i],secondlist[i]);
f.list3.options[i]=new Option("a","b");
secondlist = new Array("a","b")

这有什么作用？？为什么要改成这样？
我之前2级联的时候f.list2.options[i]=new Option(secondlist[i]);是一个参数是没问题的！

孟子E章 2005-05-15

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你的数据不全

这样
<SCRIPT>
//(c)2000 Webteacher Software, LLC
//http://www.webteacher.com

platform=window.navigator.appVersion;
ie3=0;
if (platform.indexOf('MSIE 3')>0) {
ie3=1;
}

Fruit=new Array()
Fruit[0]="apple";
Fruit[1]="banana";

Vegetables=new Array()
Vegetables[0]="carrot";

Meat=new Array()
Meat[0]="chicken";
Meat[1]="ham";

apple=new Array()
apple[0]="111111";
apple[1]="112221";

banana=new Array()
banana[0]="fff";

carrot=new Array()
carrot[0]="aa";

chicken=new Array()
chicken[0]="5555";

ham=new Array()
ham[0]="sdfsdf";

secondlist = new Array("a","b")
function setList(f) {
if (ie3) {
alert('Changable lists do not work with Internet Explorer 3');
return;
};
secondlist=eval(f.list1.options[f.list1.selectedIndex].value);
f.list2.options.length=0;
for(i=0;i<secondlist.length;i++) {
f.list2.options[i]=new Option(secondlist[i],secondlist[i]);
};
f.list2.selectedIndex=0;
};

function setList2(f) {
if (ie3) {
alert('Changable lists do not work with Internet Explorer 3');
return;
};
secondlist2=f.list2.options[f.list2.selectedIndex].value;
f.list3.options.length=0;
for(i=0;i<secondlist2.length;i++) {
f.list3.options[i]=new Option("a","b");
};
f.list3.selectedIndex=0;
};

</SCRIPT>
<body>
<FORM NAME="listsform">
<SELECT NAME="list1" onChange="setList(form)">
<OPTION VALUE="Fruit" SELECTED>Fruit</OPTION>
<OPTION VALUE="Vegetables">Vegetables</OPTION>
<OPTION VALUE="Meat">Meat</OPTION>
</SELECT>
<SELECT NAME="list2" onChange="setList2(form)">
<OPTION> </OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
</SELECT>
<SELECT NAME="list3">
<OPTION> </OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
<OPTION></OPTION>
</SELECT>
</FORM>
</body>
</html>

leo963258 2005-05-15