我有剑道树列表（在uid或值的帮助下），我在其中搜索myDataItem所在的行。
当我执行时：
$("#treeList tbody").on("click", "tr", function (e) {
var rSelectedRow = $(this);
var getSelect = treeList.select();
console.log("'real' selected row: "+rSelectedRow);
console.log("selected row: "+getSelect);
});
在另一个函数中，我要在其中获得一行（不是选定的一行，只是myDataItem所在的一行）：
var grid = treeList.element.find(".k-grid-content");
var myRow = grid.find("tr[data-uid='" + myDataItem.uid + "']"));
//or
// myRow = treeList.content.find("tr").eq(myDataItem.val);
console.log("my row:" + myRow)
我得到：
“实际”所选行：对象[tr.k-alt ...]
所选行：对象{长度：0 ...}
我的行：对象{长度：0 ...}
我需要为rSelectedRow使用myRow的相同结构。那么，如何获得真实的tr元素？
更新：我编写了此方法来查找我的新添加项的行：
//I have an id of the item and put it in an invisible row in the treelist.
getRowWhereItem: function (itemId) {
treeList.dataSource.read();
$("#menuItemTree .k-grid-content tr").each(function (i) {
var rowId = $(this).find('td:eq(1)').text();
console.log(itemId);
console.log(rowId);
if (rowId == itemId) {
console.log("found");
console.log(itemId + " " + rowId);
var row = this;
console.log(row);
return row;
}
});
},
每个迭代到达所有tr，直到/除了新添加的tr。为什么？
答案 0 :(得分：1)
使用change事件，而不是将click事件绑定到小部件的DOM。请注意，要使change工作，您需要将selectable设置为true：
<!-- Orginal demo at https://demos.telerik.com/kendo-ui/treelist/index -->
<!DOCTYPE html>
<html>
<head>
<base href="https://demos.telerik.com/kendo-ui/treelist/index">
<style>html { font-size: 14px; font-family: Arial, Helvetica, sans-serif; }</style>
<title></title>
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2018.3.911/styles/kendo.common-material.min.css" />
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2018.3.911/styles/kendo.material.min.css" />
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2018.3.911/styles/kendo.material.mobile.min.css" />
<script src="https://kendo.cdn.telerik.com/2018.3.911/js/jquery.min.js"></script>
<script src="https://kendo.cdn.telerik.com/2018.3.911/js/kendo.all.min.js"></script>
</head>
<body>
<div id="example">
<div id="treelist"></div>
<script id="photo-template" type="text/x-kendo-template">
<div class='employee-photo'
style='background-image: url(../content/web/treelist/people/#:data.EmployeeID#.jpg);'></div>
<div class='employee-name'>#: FirstName #</div>
</script>
<script>
$(document).ready(function() {
var service = "https://demos.telerik.com/kendo-ui/service";
$("#treelist").kendoTreeList({
dataSource: {
transport: {
read: {
url: service + "/EmployeeDirectory/All",
dataType: "jsonp"
}
},
schema: {
model: {
id: "EmployeeID",
parentId: "ReportsTo",
fields: {
ReportsTo: { field: "ReportsTo", nullable: true },
EmployeeID: { field: "EmployeeId", type: "number" },
Extension: { field: "Extension", type: "number" }
},
expanded: true
}
}
},
height: 540,
filterable: true,
sortable: true,
columns: [
{ field: "FirstName", title: "First Name", width: 280,
template: $("#photo-template").html() },
{ field: "LastName", title: "Last Name", width: 160 },
{ field: "Position" },
{ field: "Phone", width: 200 },
{ field: "Extension", width: 140 },
{ field: "Address" }
],
pageable: {
pageSize: 15,
pageSizes: true
},
/* See here */
selectable: true,
change: function() {
let $selectedItem = this.select(),
dataItem1 = this.dataItem($selectedItem),
uid1 = $selectedItem.data("uid"),
uid2 = dataItem1.uid,
dataItem2 = this.dataSource.getByUid(uid1);
console.log("selected item", $selectedItem);
console.log("dataItem", dataItem1);
console.log("dataItem(alternative way)", dataItem2);
console.log("uid", uid1);
console.log("uid(alternative way)", uid2);
}
});
});
</script>
<style>
.employee-photo {
display: inline-block;
width: 32px;
height: 32px;
border-radius: 50%;
background-size: 32px 35px;
background-position: center center;
vertical-align: middle;
line-height: 32px;
box-shadow: inset 0 0 1px #999, inset 0 0 10px rgba(0,0,0,.2);
margin-left: 5px;
}
.employee-name {
display: inline-block;
vertical-align: middle;
line-height: 32px;
padding-left: 3px;
}
</style>
</div>
</body>
</html>
真正重要的部分：
selectable: true,
change: function() {
let $selectedItem = this.select(),
dataItem1 = this.dataItem($selectedItem),
uid1 = $selectedItem.data("uid"),
uid2 = dataItem1.uid,
dataItem2 = this.dataSource.getByUid(uid1);
console.log("selected item", $selectedItem);
console.log("dataItem", dataItem1);
console.log("dataItem(alternative way)", dataItem2);
console.log("uid", uid1);
console.log("uid(alternative way)", uid2);
}
答案 1 :(得分：0)
我没有找到可以通过datauid获取tr的解决方案。
但就我而言，我获取了该项目的ID，并将其放在树列表中的不可见行中。
因此，问题中的方法getRowWhereItem(itemId)在成功执行Ajax调用后执行时，效果很好。通过我的ajax调用中的回调，我加载了新项，然后该方法可以找到该行。因此，问题在于我必须从数据库中获取最新数据。
另一个问题是上下文。方法getRowWhereItem(itemId)是命名空间的方法。我试图在命名空间之外调用该方法，但无法获取其return。现在，我将方法移到调用它的相同上下文中。
（注意：我的开发遵循MVC模式，管理是控制器类）
$.ajax({
url: General.createMethodUrl("Administration", "Admin", "Add_New"),
data: { parentItemId: parentOfNewId },
type: "POST",
dataType: "json",
success: function (response) {
if (response) {
var addedItem = $.parseJSON(response);
//waiting for callback because otherwise the window opens a few milliseconds before the properties are loaded and newRow cannot be find
tManag.ajaxCallSelectedEntry(addedItem.Id, treeList, function () {
newRow = tManag.getRowWhereItem(addedItem.Id);
});
jQuery(newRow).addClass("k-state-selected")
} else {
tManag.alertDialog(dialog, "Adding New Item Notification", response.responseText);
}
},
error: function (response) {
tManag.alertDialog(dialog, "Adding New Item Error", "Error");
}
});