如何获取剑道网格中复选框的值

Question

我有一个剑道网格，其中包含两种类型的行：一种是 css 类 k-master-row，它在网格最初加载时出现，另一种是 css 类 k-detail-row k-alt，它在单击下拉菜单时出现，本质上作为每个主行的详细信息。每个主行都有一个复选框，需要获取其值：

<td class="" role="gridcell"><input id="TOC_ckbx" name="TOC_ckbx" type="checkbox" value="15" checked="checked" class="chkbx"></td>

最初，我在更改事件上获得复选框的值，如下所示：

$("#sectionGrid .k-grid-content").on("change", "input.chkbx", function (e) {
            var dataItem = $grid.dataItem($(e.target).closest("tr"));            
            dataItem.set("TocShow", this.checked);
});

这段代码有效，但是因为它检查了所有子元素中的所有输入复选框，它还跟踪了对其下方详细信息网格中两个复选框的更改：

<tr data-uid="34d19927-c356-4d6d-9e00-5b470fe369eb" role="row">
<td role="gridcell"><input class="k-checkbox" data-role="checkbox" id="0b1e4591-88c0-4796-aa62-1c9482005be1" aria-label="Select row" aria-checked="false" type="checkbox"><label for="0b1e4591-88c0-4796-aa62-1c9482005be1" class="k-checkbox-label k-no-text">​</label></td>
<td class="" role="gridcell"><input id="FirstRun" name="FirstRun" class="chkbx" type="checkbox" checked=""></td>
<td class="" role="gridcell"><input id="SecondRun" name="SecondRun" type="checkbox" checked="" class="chkbx"></td>
</tr>

然后我尝试使用以下方法通过 id 获取主行中的每个 #TOC_ckbx 复选框，但由于某种原因，只跟踪对第一行中的复选框的更改，而不是其他任何复选框行：

 $("#TOC_ckbx.chkbx").change(function (e) {
            var dataItem = $grid.dataItem($(e.target).closest("tr"));
            dataItem.set("TocShow", this.checked);
        });

为了获取 all 的值，正确的 Jquery 选择器是什么？ 更改事件上的 TOC 复选框？

html 的 sn-p 如下（为简洁起见，删除了一些列）：

<tbody>
<tr class="k-master-row" data-uid="c5aa3ba6-ecd6-47f3-aeb5-7e5c1111028e" role="row">
    <td class="k-hierarchy-cell" aria-expanded="false"><a class="k-icon k-i-expand" href="#" aria-label="Expand" tabindex="-1"></a></td>
    <td role="gridcell"><input class="k-checkbox" data-role="checkbox" id="01d0ab93-c661-439b-abee-01f9ce34b1b6" aria-label="Select row" aria-checked="false" type="checkbox"><label for="01d0ab93-c661-439b-abee-01f9ce34b1b6" class="k-checkbox-label k-no-text">​</label></td>
    <td style="display:none" class="" role="gridcell">15</td>
    <td style="display:none" class="" role="gridcell">4</td>
    <td class="" role="gridcell">3. Portfolio Characteristics and Investment Results</td>
    <td style="display:none" class="" role="gridcell"></td>
    <td class="" role="gridcell"><input id="TOC_ckbx" name="TOC_ckbx" type="checkbox" value="15" checked="checked" class="chkbx"></td>
    <td style="display:none" class="" role="gridcell">01/01/1900</td>
    <td style="display:none" class="" role="gridcell"></td>
    <td class="" role="gridcell"><span class="sortSpan"> 3 </span></td>
    <td class="" role="gridcell"></td>
    <td class="" role="gridcell"></td>
    <td class="" role="gridcell"></td>
    <td class="" role="gridcell"></td>
 </tr>


<tr class="k-detail-row k-alt">
    <td class="k-hierarchy-cell"></td>
    <td class="k-detail-cell" colspan="8">
    <div class="k-widget k-grid detail-grid k-display-block k-editable" id="grid_14" data-role="grid" style="height: 379px;">
        <div class="k-header k-grid-toolbar k-grid-top"><a class="k-button k-button-icontext k-grid-add" href="/Document/SectionPage?sectionID=%23%3DSectionID%23&amp;documentID=4&amp;_=1544475674808&amp;grid_%23%3DSectionID%23-mode=insert"><span class="k-icon k-i-add"></span>Add Page</a><a class="k-button k-button-icontext k-grid-save-changes" href="javascript:void(0)"><span class="k-icon k-i-check"></span>Save Pages</a><a class="k-button k-button-icontext k-grid-cancel-changes" href="javascript:void(0)"><span class="k-icon k-i-cancel"></span>Cancel changes</a></div>
        <div class="k-grid-header" style="padding-right: 17px;">
            <div class="k-grid-header-wrap k-auto-scrollable">
                <table role="grid">
                <colgroup>
                    <col style="width:60px">
                    <col style="width:225px">
                    <col style="width:300px">
                    <col style="width:120px">
                    <col>
                    <col>
                    <col>
                    <col>
                    <col>
                    <col style="width:110px">
                    <col style="width:110px">
                </colgroup>
                <thead role="rowgroup">
                    <tr role="row">
                        <th class="k-header" scope="col" data-index="0"><span class="k-link">Delete</span></th>
                        <th class="k-header" data-field="SectionPageID" data-index="1" data-title="Section Page ID" scope="col" style="display:none" data-role="columnsorter"><a class="k-link" href="/Document/SectionPage?sectionID=%23%3DSectionID%23&amp;documentID=4&amp;_=1544475674808&amp;grid_%23%3DSectionID%23-sort=SectionPageID-asc">Section Page ID</a></th>
                        <th class="k-header" data-field="SectionID" data-index="2" data-title="Section ID" scope="col" style="display:none" data-role="columnsorter"><a class="k-link" href="/Document/SectionPage?sectionID=%23%3DSectionID%23&amp;documentID=4&amp;_=1544475674808&amp;grid_%23%3DSectionID%23-sort=SectionID-asc">Section ID</a></th>
                        <th class="k-header" data-field="PageID" data-index="3" data-title="Page ID" scope="col" style="display:none" data-role="columnsorter"><a class="k-link" href="/Document/SectionPage?sectionID=%23%3DSectionID%23&amp;documentID=4&amp;_=1544475674808&amp;grid_%23%3DSectionID%23-sort=PageID-asc">Page ID</a></th>
                        <th class="k-header" data-field="PageCD" data-index="4" data-title="Page" scope="col" data-role="columnsorter"><a class="k-link" href="/Document/SectionPage?sectionID=%23%3DSectionID%23&amp;documentID=4&amp;_=1544475674808&amp;grid_%23%3DSectionID%23-sort=PageCD-asc">Page</a></th>
                        <th class="k-header" data-field="PageTitle" data-index="5" data-title="Page Title" scope="col" style="display:none" data-role="columnsorter"><a class="k-link" href="/Document/SectionPage?sectionID=%23%3DSectionID%23&amp;documentID=4&amp;_=1544475674808&amp;grid_%23%3DSectionID%23-sort=PageTitle-asc">Page Title</a></th>
                        <th class="k-header" data-field="PageTitleOverride" data-index="6" data-title="Page Title Override" scope="col" data-role="columnsorter"><a class="k-link" href="/Document/SectionPage?sectionID=%23%3DSectionID%23&amp;documentID=4&amp;_=1544475674808&amp;grid_%23%3DSectionID%23-sort=PageTitleOverride-asc">Page Title Override</a></th>
                    </tr>
                </thead>
                </table>
            </div>
        </div>
        <div class="k-grid-content" style="height: 307px;">
            <table role="grid" data-role="sortable">

                <tbody role="rowgroup">
                <tr data-uid="34d19927-c356-4d6d-9e00-5b470fe369eb" role="row">
                    <td role="gridcell"><input class="k-checkbox" data-role="checkbox" id="0b1e4591-88c0-4796-aa62-1c9482005be1" aria-label="Select row" aria-checked="false" type="checkbox"><label for="0b1e4591-88c0-4796-aa62-1c9482005be1" class="k-checkbox-label k-no-text">​</label></td>
                    <td class="" role="gridcell"><input id="FirstRun" name="FirstRun" class="chkbx" type="checkbox" checked=""></td>
                    <td class="" role="gridcell"><input id="SecondRun" name="SecondRun" type="checkbox" checked="" class="chkbx"></td>
                </tr>

                </tr>
                </tbody>
            </table>
        </div>
    </div>
    <script>
        kendo.syncReady(function(){jQuery("#grid_14").kendoGrid({"dataBound":detailGrid_onDataBound,"saveChanges":detailGrid_onSaveChanges,"edit":detailGrid_onEdit,"columns":[{"width":"60px","selectable":true},{"title":"Section Page ID","headerAttributes":{"data-field":"SectionPageID","data-title":"Section Page ID"},"hidden":true,"field":"SectionPageID","encoded":true,"editor":"<input class=\"text-box single-line\" data-val=\"true\" data-val-number=\"The field SectionPageID must be a number.\" id=\"SectionPageID\" name=\"SectionPageID\" type=\"number\" value=\"\" /><span class=\"field-validation-valid\" data-valmsg-for=\"SectionPageID\" data-valmsg-replace=\"true\"></span>"},{"title":"Section ID","headerAttributes":{"data-field":"SectionID","data-title":"Section ID"},"hidden":true,"field":"SectionID","encoded":true,"editor":"<input class=\"text-box single-line\" data-val=\"true\" data-val-number=\"The field SectionID must be a number.\" id=\"SectionID\" name=\"SectionID\" type=\"number\" value=\"\" /><span class=\"field-validation-valid\" data-valmsg-for=\"SectionID\" data-valmsg-replace=\"true\"></span>"},{"title":"Page ID","headerAttributes":{"data-field":"PageID","data-title":"Page ID"},"hidden":true,"field":"PageID","encoded":true,"editor":"<input class=\"text-box single-line\" data-val=\"true\" data-val-number=\"The field PageID must be a number.\" id=\"PageID\" name=\"PageID\" type=\"number\" value=\"\" /><span class=\"field-validation-valid\" data-valmsg-for=\"PageID\" data-valmsg-replace=\"true\"></span>"},{"title":"Page","headerAttributes":{"data-field":"PageCD","data-title":"Page"},"width":"225px","field":"PageCD","encoded":true,"editor":"<input id=\"PageCD\" name=\"PageCD\" type=\"text\" /><script>  kendo.syncReady(function(){jQuery(\"#PageCD\").kendoDropDownList({\"dataSource\":{\"transport\":{\"read\":{\"url\":\"/Document/GetDropDownListItems?parentKey=Page_CD\u0026fieldText=Lookup\u0026fieldValue=LookupValue\u0026isSP=False\u0026includeValue=%20\"},\"prefix\":\"\"},\"schema\":{\"errors\":\"Errors\"}},\"dataTextField\":\"Text\",\"dataValueField\":\"Text\"});});<\/script><span class=\"field-validation-valid\" data-valmsg-for=\"PageCD\" data-valmsg-replace=\"true\"></span>"},{"title":"Page Title","headerAttributes":{"data-field":"PageTitle","data-title":"Page Title"},"hidden":true,"field":"PageTitle","encoded":true},{"title":"Page Title Override","headerAttributes":{"data-field":"PageTitleOverride","data-title":"Page Title Override"},"width":"300px","field":"PageTitleOverride","encoded":true,"editor":"<input class=\"text-box single-line\" id=\"PageTitleOverride\" name=\"PageTitleOverride\" type=\"text\" value=\"\" /><span class=\"field-validation-valid\" data-valmsg-for=\"PageTitleOverride\" data-valmsg-replace=\"true\"></span>"},{"title":"Account ID","headerAttributes":{"data-field":"AccountID","data-title":"Account ID"},"hidden":true,"field":"AccountID","encoded":true,"editor":"<input class=\"text-box single-line\" data-val=\"true\" data-val-number=\"The field AccountID must be a number.\" id=\"AccountID\" name=\"AccountID\" type=\"number\" value=\"\" /><span class=\"field-validation-valid\" data-valmsg-for=\"AccountID\" data-valmsg-replace=\"true\"></span>"},{"title":"Account","headerAttributes":{"data-field":"AccountCD","data-title":"Account"},"width":"120px","field":"AccountCD","encoded":true,"editor":"<input id=\"AccountCD\" name=\"AccountCD\" type=\"text\" /><script> kendo.syncReady(function(){jQuery(\"#AccountCD\").kendoAutoComplete({\"dataSource\":{\"transport\":{\"read\":{\"url\":\"/Document/GetAutoCompleteItems\",\"data\":txtFilterValue_onAdditionalData},\"prefix\":\"\"},\"schema\":{\"errors\":\"Errors\"}}});});<\/script><span class=\"field-validation-valid\" data-valmsg-for=\"AccountCD\" data-valmsg-replace=\"true\"></span>"},{"title":"Effective Date","headerAttributes":{"data-field":"EffectiveDate","data-title":"Effective Date"},"hidden":true,"width":"60px","field":"EffectiveDate","format":"{0:MM/dd/yyyy}","encoded":true,"editor":"<input class=\"text-box single-line\" data-val=\"true\" data-val-date=\"The field EffectiveDate must be a date.\" id=\"EffectiveDate\" name=\"EffectiveDate\" type=\"datetime\" value=\"\" /><span class=\"field-validation-valid\" data-valmsg-for=\"EffectiveDate\" data-valmsg-replace=\"true\"></span>"},{"title":"End Date","headerAttributes":{"data-field":"EndDate","data-title":"End Date"},"hidden":true,"width":"60px","field":"EndDate","format":"{0:MM/dd/yyyy}","encoded":true,"editor":"<input class=\"text-box single-line\" data-val=\"true\" data-val-date=\"The field EndDate must be a date.\" id=\"EndDate\" name=\"EndDate\" type=\"datetime\" value=\"\" /><span class=\"field-validation-valid\" data-valmsg-for=\"EndDate\" data-valmsg-replace=\"true\"></span>"},{"title":"Sort Order","headerAttributes":{"data-field":"SPSortOrder","data-title":"Sort Order"},"template":"<span class='spSortSpan'>#if(SPSortOrder != null) {# #=SPSortOrder# #} else {# #=0# #}#</span>","field":"SPSortOrder","encoded":true,"editor":"<input class=\"text-box single-line\" data-val=\"true\" data-val-number=\"The field SPSortOrder must be a number.\" id=\"SPSortOrder\" name=\"SPSortOrder\" type=\"number\" value=\"\" /><span class=\"field-validation-valid\" data-valmsg-for=\"SPSortOrder\" data-valmsg-replace=\"true\"></span>"},{"title":"Added 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    </script>
    </td>
</tr>
</tbody>           

Answer 1

您可以尝试以下选择器之一：

// Adding input 'name' attribute
$("#sectionGrid .k-grid-content").on("change", 'input.chkbx[name="TOC_ckbx"]', function (e) {

或者...

// Filtering by only those inputs under 'td' and 'tr.k-master-row'
$("#sectionGrid .k-grid-content").on("change", 'tr.k-master-row > td > input.chkbx', function (e) {

Answer 2

JQuery 有很多方法可以通过使用任何 CSS 选择器或其中的一些其他内置函数来选择元素。我在下面列出了一些示例，然后是一个可能的解决方案。我对剑道不熟悉，所以你必须以你知道的方式设置你的数据对象。

//Examples
        $('.parentSelector').each(function () {
            //$(this) is the JQuery version of this

            var parent = $(this);

            //When looking for something that is a child element of a parent in an .each() or some other loop you can do it like this.

            var exampleChild = $(".class", $(this));

            //Example : Looking for in the container / parent for the second checkbox with the class .chkbx, id TOC_ckbx, name TOC_ckbx which is the 5th element

            //Find by ID - Will make the first ID it finds, IDs must be unique
            var findByID = $("#TOC_chkbx");

            //Find by index of children element in parent
            var findByIndex = $("*:nth-child('5')");

            //Find the second input in the parent
            var secondCheckBox = $('input', parent).eq(1);

            //Find the first element with the class .chkbx
            var firstOfClass = $('.chkbx', parent).eq(0);

            //Find the first input with the name "TOC_ckbx" : There are many other regex formulas you can use
            var attributeWithValue = $("input[name='TOC_ckbx']'", parent);
        });


        //A solution for you
        $('.parentSelector').each(function () {

            //Getting value by index(first) of class
            var myTargetValue = $('.chkbx', $(this)).eq(0).val();

            // When any checkbox is changed within the parent
            $('input:checkbox', $(this)).on('change', function () {
                // Do something with myTargetValue
                // Not familiar with Kendo to give anything useful
            });
        });

注意：

您提供的第一段 javascript 将更改事件添加到所有 inputs 类 .chkbx 在 ID 为 #sectionGrid 的元素中具有父类 .k-grid-content 的所有 inputs。

您拥有的第二段 javascript 将更改侦听器添加到具有类 .chkbx 和 ID #TOC_ckbx 的元素，这就是它不适用于其他输入的原因