您问题的答案在一定程度上取决于来源，您可以从中获得“美国国家”和“英国国家”下显示的信息。的是由支持的jqGrid两种可能性：1）的使用value的参数editoptions
2）的使用dataUrl和buildSelect参数的editoptions。在本地编辑或可能选项列表为静态的情况下，第一种方法是最好的方法。在以下情况下将使用第二种选择：关于状态，国家和某个国家的状态的信息将根据数据库中的每个AJAX请求获取。我在示例中描述解决方案的用法value参数不依赖于服务器组件。如果使用dataUrl和，则实现的大部分内容都是相同的buildSelect。

我做了一个生动的例子来演示您的需求。

主要的问题是，value的editoptions使用 只有一次
在上初始化的时间。在dataInit函数内部，可以覆盖value，但是在更改带有国家/地区的第一个选择/下拉框中的值之后，必须手动重建具有状态的第二个选择/下拉框。为此，必须理解，select
HTML元素具有由行ID’_’和列名构成的ID：rowId +“
_State”。此外，重要value的是editoptions必须将的重置为初始值，以便可以将任何状态id解码为状态名称。

这是示例中的代码：

var countries = { '1': 'US', '2': 'UK' };
var states = { '1': 'Alabama', '2': 'California', '3': 'Florida', '4': 'Hawaii', '5': 'London', '6': 'Oxford' };
var statesOfCountry = {
    1: { '1': 'Alabama', '2': 'California', '3': 'Florida', '4': 'Hawaii' },
    2: { '5': 'London', '6': 'Oxford' }
};
var mydata = [
    { id: '0', Country: '1', State: '1', Name: "Louise Fletcher" },
    { id: '1', Country: '1', State: '3', Name: "Jim Morrison" },
    { id: '2', Country: '2', State: '5', Name: "Sherlock Holmes" },
    { id: '3', Country: '2', State: '6', Name: "Oscar Wilde" }
];

var lastSel = -1;
var grid = jQuery("#list");
var resetStatesValues = function () {
    grid.setColProp('State', { editoptions: { value: states} });
};
grid.jqGrid({
    data: mydata,
    datatype: 'local',
    colModel: [
        { name: 'Name', width: 200 },
        { name: 'Country', width: 100, editable: true, formatter: 'select',
            edittype: 'select', editoptions: {
                value: countries,
                dataInit: function (elem) {
                    var v = $(elem).val();
                    // to have short list of options which corresponds to the country
                    // from the row we have to change temporary the column property
                    grid.setColProp('State', { editoptions: { value: statesOfCountry[v]} });
                },
                dataEvents: [
                    {
                        type: 'change',
                        fn: function(e) {
                            // To be able to save the results of the current selection
                            // the value of the column property must contain at least
                            // the current selected 'State'. So we have to reset
                            // the column property to the following
                            //grid.setColProp('State', { editoptions:{value: statesOfCountry[v]} });
                            //grid.setColProp('State', { editoptions: { value: states} });
                            resetStatesValues();

                            // build 'State' options based on the selected 'Country' value
                            var v = parseInt($(e.target).val(), 10);
                            var sc = statesOfCountry[v];
                            var newOptions = '';
                            for (var stateId in sc) {
                                if (sc.hasOwnProperty(stateId)) {
                                    newOptions += '<option role="option" value="' +
                                                  stateId + '">' +
                                                  states[stateId] + '</option>';
                                }
                            }

                            // populate the new
                            if ($(e.target).is('.FormElement')) {
                                // form editing
                                var form = $(e.target).closest('form.FormGrid');
                                $("select#State.FormElement", form[0]).html(newOptions);
                            } else {
                                // inline editing
                                var row = $(e.target).closest('tr.jqgrow');
                                var rowId = row.attr('id');
                                $("select#" + rowId + "_State", row[0]).html(newOptions);
                            }
                        }
                    }
                ]
            }
        },
        {
            name: 'State', width: 100, editable: true, formatter: 'select',
            edittype: 'select', editoptions: { value: states }
        }
    ],
    onSelectRow: function (id) {
        if (id && id !== lastSel) {
            if (lastSel != -1) {
                resetStatesValues();
                grid.restoreRow(lastSel);
            }
            lastSel = id;
        }
    },
    ondblClickRow: function (id, ri, ci) {
        if (id && id !== lastSel) {
            grid.restoreRow(lastSel);
            lastSel = id;
        }
        resetStatesValues();
        grid.editRow(id, true, null, null, 'clientArray', null,
                        function (rowid, response) {  // aftersavefunc
                            grid.setColProp('State', { editoptions: { value: states} });
                        });
        return;
    },
    editurl: 'clientArray',
    sortname: 'Name',
    height: '100%',
    viewrecords: true,
    rownumbers: true,
    sortorder: "desc",
    pager: '#pager',
    caption: "Demonstrate dependend select/dropdown lists (edit on double-click)"
}).jqGrid('navGrid','#pager', 
          { edit: true, add: true, del: false, search: false, refresh: false },
          { // edit options
              recreateForm:true,
              onClose:function() {
                  resetStatesValues();
              }
          },
          { // add options
              recreateForm:true,
              onClose:function() {
                  resetStatesValues();
              }
          });

更新 ：我更新了上面的代码，使其也可以在表单编辑的情况下使用。您可以在这里看到它。因为jqGrid不支持表单编辑的本地编辑，所以我无法测试代码。但是，我希望我能充分利用所需的更改。

更新2 ：我扩展了上面的代码以支持

1. 内联编辑，表单编辑，搜索工具栏和高级搜索
2. 编辑表单中的上一个或下一个导航按钮
3. 改善选择中的键盘支持（修复了某些浏览器中刷新依赖选择的问题）

该演示的新版本在这里。您可以在下面找到的演示的修改后的代码：

var countries = { '1': 'US', '2': 'UK' },
    //allCountries = {'': 'All', '1': 'US', '2': 'UK'},
    // we use string form of allCountries to have control on the order of items
    allCountries = ':All;1:US;2:UK',
    states = { '1': 'Alabama', '2': 'California', '3': 'Florida', '4': 'Hawaii', '5': 'London', '6': 'Oxford' },
    allStates = ':All;1:Alabama;2:California;3:Florida;4:Hawaii;5:London;6:Oxford',
    statesOfUS = { '1': 'Alabama', '2': 'California', '3': 'Florida', '4': 'Hawaii' },
    statesOfUK = { '5': 'London', '6': 'Oxford' },
    // the next maps contries by ids to states
    statesOfCountry = { '': states, '1': statesOfUS, '2': statesOfUK },
    mydata = [
        { id: '0', country: '1', state: '1', name: "Louise Fletcher" },
        { id: '1', country: '1', state: '3', name: "Jim Morrison" },
        { id: '2', country: '2', state: '5', name: "Sherlock Holmes" },
        { id: '3', country: '2', state: '6', name: "Oscar Wilde" }
    ],
    lastSel = -1,
    grid = $("#list"),
    removeAllOption = function (elem) {
        if (typeof elem === "object" && typeof elem.id === "string" && elem.id.substr(0, 3) !== "gs_") {
            // in the searching bar
            $(elem).find('option[value=""]').remove();
        }
    },
    resetStatesValues = function () {
        // set 'value' property of the editoptions to initial state
        grid.jqGrid('setColProp', 'state', { editoptions: { value: states} });
    },
    setStateValues = function (countryId) {
        // to have short list of options which corresponds to the country
        // from the row we have to change temporary the column property
        grid.jqGrid('setColProp', 'state', { editoptions: { value: statesOfCountry[countryId]} });
    },
    changeStateSelect = function (countryId, countryElem) {
        // build 'state' options based on the selected 'country' value
        var stateId, stateSelect, parentWidth, $row,
            $countryElem = $(countryElem),
            sc = statesOfCountry[countryId],
            isInSearchToolbar = $countryElem.parent().parent().parent().hasClass('ui-search-toolbar'),
                              //$(countryElem).parent().parent().hasClass('ui-th-column')
            newOptions = isInSearchToolbar ? '<option value="">All</option>' : '';

        for (stateId in sc) {
            if (sc.hasOwnProperty(stateId)) {
                newOptions += '<option role="option" value="' + stateId + '">' +
                    states[stateId] + '</option>';
            }
        }

        setStateValues(countryId);

        // populate the subset of contries
        if (isInSearchToolbar) {
            // searching toolbar
            $row = $countryElem.closest('tr.ui-search-toolbar');
            stateSelect = $row.find(">th.ui-th-column select#gs_state");
            parentWidth = stateSelect.parent().width();
            stateSelect.html(newOptions).css({width: parentWidth});
        } else if ($countryElem.is('.FormElement')) {
            // form editing
            $countryElem.closest('form.FormGrid').find("select#state.FormElement").html(newOptions);
        } else {
            // inline editing
            $row = $countryElem.closest('tr.jqgrow');
            $("select#" + $.jgrid.jqID($row.attr('id')) + "_state").html(newOptions);
        }
    },
    editGridRowOptions = {
        recreateForm: true,
        onclickPgButtons: function (whichButton, $form, rowid) {
            var $row = $('#' + $.jgrid.jqID(rowid)), countryId;
            if (whichButton === 'next') {
                $row = $row.next();
            } else if (whichButton === 'prev') {
                $row = $row.prev();
            }
            if ($row.length > 0) {
                countryId = grid.jqGrid('getCell', $row.attr('id'), 'country');
                changeStateSelect(countryId, $("#country")[0]);
            }
        },
        onClose: function () {
            resetStatesValues();
        }
    };

grid.jqGrid({
    data: mydata,
    datatype: 'local',
    colModel: [
        { name: 'name', width: 200, editable: true },
        { name: 'country', width: 100, editable: true, formatter: 'select', stype: 'select', edittype: 'select',
            searchoptions: {
                value: allCountries,
                dataInit: function (elem) { removeAllOption(elem); },
                dataEvents: [
                    { type: 'change', fn: function (e) { changeStateSelect($(e.target).val(), e.target); } },
                    { type: 'keyup', fn: function (e) { $(e.target).trigger('change'); } }
                ]
            },
            editoptions: {
                value: countries,
                dataInit: function (elem) { setStateValues($(elem).val()); },
                dataEvents: [
                    { type: 'change', fn: function (e) { changeStateSelect($(e.target).val(), e.target); } },
                    { type: 'keyup', fn: function (e) { $(e.target).trigger('change'); } }
                ]
            }},
        { name: 'state', width: 100, formatter: 'select', stype: 'select',
            editable: true, edittype: 'select', editoptions: { value: states },
            searchoptions: { value: allStates, dataInit: function (elem) { removeAllOption(elem); } } }
    ],
    onSelectRow: function (id) {
        if (id && id !== lastSel) {
            if (lastSel !== -1) {
                $(this).jqGrid('restoreRow', lastSel);
                resetStatesValues();
            }
            lastSel = id;
        }
    },
    ondblClickRow: function (id) {
        if (id && id !== lastSel) {
            $(this).jqGrid('restoreRow', lastSel);
            lastSel = id;
        }
        resetStatesValues();
        $(this).jqGrid('editRow', id, {
            keys: true,
            aftersavefunc: function () {
                resetStatesValues();
            },
            afterrestorefunc: function () {
                resetStatesValues();
            }
        });
        return;
    },
    editurl: 'clientArray',
    sortname: 'name',
    ignoreCase: true,
    height: '100%',
    viewrecords: true,
    rownumbers: true,
    sortorder: "desc",
    pager: '#pager',
    caption: "Demonstrate dependend select/dropdown lists (inline editing on double-click)"
});
grid.jqGrid('navGrid', '#pager', { del: false }, editGridRowOptions, editGridRowOptions);
grid.jqGrid('filterToolbar', {stringResult: true, searchOnEnter: true, defaultSearch : "cn"});

更新3 ：您将在此处找到该演示代码的最新版本。