只需增加相应的数据库记录和html的表单就行了例:
<select name="select" id="sheng" parameter="sheng,upgra.php,a=0" abc="xian" onchange="changeLct('sheng')">
</select>
<select name="select1" id="xian" abc="shi" onchange="changeLct('xian')">
<option value="-1" selected>请选择</option>
</select>
<select name="select2" id="shi" >
<option value="-1" selected>请选择</option>
</select>
<select name="select3" id="select3" abc="select4" onchange="changeLct(select3)">
<option value="-1" selected>请选择</option>
</select>
<select name="select4" id="select4" abc="select5" onchange="changeLct('select4')">
<option value="-1" selected>请选择</option>
</select>
<select name="select5" id="select4" >
<option value="-1" selected>请选择</option>
</select>
<select name="select" id="sheng" parameter="sheng,upgra.php,a=0" abc="xian" onchange="changeLct('sheng')">
</select>
<select name="select1" id="xian" abc="shi" onchange="changeLct('xian')">
<option value="-1" selected>请选择</option>
</select>
<select name="select2" id="shi" >
<option value="-1" selected>请选择</option>
</select>
<select name="select3" id="select3" abc="select4" onchange="changeLct(select3)">
<option value="-1" selected>请选择</option>
</select>
<select name="select4" id="select4" abc="select5" onchange="changeLct('select4')">
<option value="-1" selected>请选择</option>
</select>
<select name="select5" id="select4" >
<option value="-1" selected>请选择</option>
</select>
<option value="-1" selected>请选择</option>
</select>
<script language="javascript">
function ajax_test(_attr_id,_url,_data){
$.ajax(
{
url: _url,
type:"get",
dataType:"text",
data: _data,
success:function(msg){
$("#"+_attr_id).html(msg);
}
}
);
}$(document).ready(function(){
var newStr = $("#select").attr("parameter").split(",");
var attr_id = newStr[0];
var url = newStr[1];
var data = newStr[2];
var num = document.getElementById("select").value;
//$("#valiname").html($("#sheng").attr("parameter"));
ajax_test(attr_id,url,data);
});
function changeLct(obj){
var num = document.getElementById(obj).value;
var attr_id = $("#"+obj).attr("abc");
var url = "upgra.php";
var data = "a="+num;
//$("#valiname").html(attr_id);
ajax_test(attr_id,url,data);
}
</script>
<select name="select" id="select" parameter="select,upgra.php,a=0" abc="select1" onchange="changeLct('select')">
</select>
<select name="select1" id="select1" abc="select2" onchange="changeLct('select1')">
<option value="-1" selected>请选择</option>
</select>
<select name="select2" id="select2" abc="select4" onchange="changeLct(select2)">
<option value="-1" selected>请选择</option>
</select>
<select name="select3" id="select3" abc="select4" onchange="changeLct(select3)">
<option value="-1" selected>请选择</option>
</select>
<select name="select4" id="select4" abc="select5" onchange="changeLct('select4')">
<option value="-1" selected>请选择</option>
</select>
<select name="select5" id="select5" >
<option value="-1" selected>请选择</option>
</select>最后一个可以不用onchange函数