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| 发表于：2008-08-21 18:52:55 楼主 |
下列一段代码是在javascript中动态生成列表框,错误提示"group为空或不是对象",哪位高手能帮帮忙,非常感谢!!!
var groups=document.getElementById("StudentInstitute").options.length;
var i;
var group=new Array(groups+1);
for (i=0;i <=groups;i++)
{
group[i]=new Array();
}
group[0][0]=new Option("==请选择==","1212");
<% int v,j,num,k=0;
for (v=1;v <=collegeLength;v++){
%>
group[ <%=v%>][0] = new Option("==请选择==","212");
<%
num=dep[v]; ///获取每个学院的专业数;
///System.out.println("num="+num);
for (j=1;j <=num;j++){%>
///System.out.println("Department="+departmentList.get(k).getDepartmentName());
group[ <%=v%>][ <%=j%>]=new Option(" <%=departmentList.get(k).getDepartmentName()%>"," <%=departmentList.get(k).getDepartmentId()%>");
<%
k=k+1;
}
}
%>
var p,q;
function Redirect(x)
{
for (q=document.getElementById("StudentDepartment").options.length-1;q>0;q--)
{
document.getElementById("StudentDepartment").options[q]=null;
}
for (p=0;p <group[x].length;p++)
{
document.getElementById("StudentDepartment").options[p]=new Option(group[x] [p].text,group[x][p].value);
}
document.getElementById("StudentDepartment").options[0].selected = true ;
}
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