<select name="fbigclass" onChange="changesmall(this.value);">改为
<select name="fbigclass" onChange="changesmall(document.faddcp.fbigclass.options[document.faddcp.fbigclass.selectedIndex].value)">
把function changesmall(bigclass)
{
alert(bigclass);
document.faddcp.fsmallclass.length = 0;
document.faddcp.fsmallclass.options[0] = new Option('请选择产品所属大11类');
for (i=0; i <smallclass.length; i++)
{
if (smallclass[i][0] == bigclass)
{document.faddcp.fsmallclass.options[document.faddcp.fsmallclass.length] = new Option(smallclass[i][1];}
}
} 改为function changesmall(bigclass)
{
alert(bigclass);
document.faddcp.fsmallclass.length = 0;
var locationid=bigclass;
var i;
for (i=0;i < count1; i++){
if (smallclass[i][1] == locationid){
document.faddcp.fsmallclass.options[document.faddcp.fsmallclass.length] = new Option(info[i][0], info[i][2]);
}
}
}
<select name="fbigclass" onChange="changesmall(document.faddcp.fbigclass.options[document.faddcp.fbigclass.selectedIndex].value)">
把function changesmall(bigclass)
{
alert(bigclass);
document.faddcp.fsmallclass.length = 0;
document.faddcp.fsmallclass.options[0] = new Option('请选择产品所属大11类');
for (i=0; i <smallclass.length; i++)
{
if (smallclass[i][0] == bigclass)
{document.faddcp.fsmallclass.options[document.faddcp.fsmallclass.length] = new Option(smallclass[i][1];}
}
} 改为function changesmall(bigclass)
{
alert(bigclass);
document.faddcp.fsmallclass.length = 0;
var locationid=bigclass;
var i;
for (i=0;i < count1; i++){
if (smallclass[i][1] == locationid){
document.faddcp.fsmallclass.options[document.faddcp.fsmallclass.length] = new Option(info[i][0], info[i][2]);
}
}
}
{
alert(bigclass);
document.faddcp.fsmallclass.length = 0;
document.faddcp.fsmallclass.options[0] = new Option('请选择产品所属大11类');
for (i=0; i <smallclass.length; i++)
{
if (smallclass[i][0] == bigclass)
{document.faddcp.fsmallclass.options[document.faddcp.fsmallclass.length] = new Option(smallclass[i][1];}
}
} 改为 function changesmall(bigclass)
{
alert(bigclass);
document.faddcp.fsmallclass.length = 0;
var locationid=bigclass;
var i;
for (i=0;i < count1; i++){
if (smallclass[i][1] == locationid){
document.faddcp.fsmallclass.options[document.faddcp.fsmallclass.length] = new Option(smallclass[i][0], smallclass[i][2]);
}
}
}
{document.faddcp.fsmallclass.options[document.faddcp.fsmallclass.length] = new Option(smallclass[i][1]);}
我最后少了一个括号,惭愧!!!