需要先用ajax的方式获取数据库的记录 作为数组 然后 将数组内容加入的下拉框中作为选项
<head><meta charset="utf-8">
<title>无标题文档</title>
<script src="http://code.jquery.com/jquery-1.4.1.min.js" type="text/javascript"></script>
<script>
$(document).ready(funxtion{
vat list1=$("#test")//获取list对象
$.get("demo_ajax_load.txt", function(result){ //获取后台数据库记录
for(var i=0,len=result.row.lengthi<result.rowi++){ // result为返回的json对象row为包含选项的数组
var o=new Option(result.row[i].text,result.row[i].value)
list1.appendChild(o)
}
},"json")
})
</script>
</head>
<body>
<select id="test">
<option>1</option>
</select>
</body>
//checkbox值var aa = ''
$("input[name='checkbox']:checkbox:checked").each(function(){
aa+=$(this).val()
})
//select值
$('#testSelect option:selected').text()
或者是value
$("#testSelect").val()
//根据部门编号选项相对应的组function showdept(val){
if(val==-1){
return
}
var request = false
if(window.ActiveXObject){
try {
request = new ActiveXObject("Msxml2","XMLHTTP")
} catch (e) {
try {
request = new ActiveXObject("Microsoft","XMLHTTP")
} catch (e) {
}
}
}
if(!request){
request = new XMLHttpRequest()
}
request.onreadystatechange = function(){
if(request.readyState==4){
if(request.status==200){
var optSel= document.getElementById("group")
optSel.options.length = 0
optSel.options[0] = new Option("---请选所属组---","-1")
var res =request.responseText
var arr = res.split(",")
for(var i=0i<arr.length-1i++){
var data = arr[i].split("_")
optSel.options[i+1] = new Option(data[1],data[0])
}
}
}
}
//打开请求
var url = "struts/oaGroup/OaGp_queryGroup.action?deptNumber="+val
request.open("GET",url,true)
//发送
request.send(null)
}
//根据组编号查询职务
function showGroup(val){
if(val==-1){
return
}
var request = false
if(window.ActiveXObject){
try {
request = new ActiveXObject("Msxml2","XMLHTTP")
} catch (e) {
try {
request = new ActiveXObject("Microsoft","XMLHTTP")
} catch (e) {
}
}
}
if(!request){
request = new XMLHttpRequest()
}
request.onreadystatechange = function(){
if(request.readyState==4){
if(request.status==200){
var optSel= document.getElementById("role")
optSel.options.length = 0
optSel.options[0] = new Option("---请选择职务---","-1")
var res =request.responseText
var arr = res.split(",")
for(var i=0i<arr.length-1i++){
var data = arr[i].split("_")
optSel.options[i+1] = new Option(data[1],data[0])
}
}
}
}
//打开请求
var url = "struts/oaRole/Oarole_queryRole.action?groupUnmber="+val
request.open("GET",url,true)
//发送
request.send(null)
}
<tr>
<td align="right">所属部门：</td>
<td>
<select name="oaEmp.oaDept.deptNumber" id="department" onchange="showdept(this.value)" >
<option value="-1">---请选择部门---</option>
<c:forEach var="dt" items="${sessionScope.dept}">
<option value="${dt.deptNumber }">${ dt.deptName}</option>
</c:forEach>
</select>
</td>
<td>
<div id="departmentTip">
<font color="red">(必选项)</font>
</div>
</td>
</tr>
<tr>
<td align="right">所属组：</td>
<td>
<select name="oaEmp.oaGroup.groupUnmber" id="group" onchange="showGroup(this.value)">
<option value="-1">---请选所属组---</option>
</select>
</td>
<td>
<font color="red">(必选项)</font>
</td>
</tr>
<tr>
<td align="right">职位角色：</td>
<td>
<select name="oaEmp.oaRole.roleUnmber" id="role">
<option value="-1">---请选择职务---</option>
</select>
</td>
<td>
<font color="red">(必选项)</font>
</td>
你可以根据这个改哈这是三级联动菜单从数据库读取信息
</tr>
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