function GetSubDropdown(parameterVal){ cascadeDropdownObj.empty();//对下级列表进行清空初始 cascadeDropdownObj.append("<option selected='selected'>(None)</option>");//添加一个(None)值 var camlQuery = "<Query xmlns='http://schemas.microsoft.com/sharepoint/soap/'> \ <Where> \ <Eq> \ <FieldRef Name='Title' /> \ <Value Type='Text'>"+parameterVal+"</Value> \ </Eq> \ </Where> \ </Query>"; $().SPServices({ operation: "GetListItems", async: false, listName: "CascadeSub", CAMLQuery: camlQuery, completefunc: function (xData, Status) { $(xData.responseXML).find("[nodeName=z:row]").each(function() { var subDropdownVal = $(this).attr("ows_SubDropdownVal");//获取字表对应的值 //binding subDropdown cascadeDropdownObj.append("<option>"+subDropdownVal+"</option>"); }); } }); } //cascading 'Dropdown' dropdownObj.change(function(){ var dropdownSelectTextObj = $("select[title$='Dropdown'] option:selected");//获取当前选中值 switch(dropdownSelectTextObj.text()){ case "L1": GetSubDropdown("L1"); break; case "L2": GetSubDropdown("L2"); break; case "PL1": GetSubDropdown("PL1"); break; default: //表示选中(None)值之后，对下级列表进行清空初始 cascadeDropdownObj.empty(); cascadeDropdownObj.append("<option selected='selected'>(None)</option>"); break; } });