javascript 获取 Kendo UI DropDownList 的数量/长度/大小
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Get Count/Length/Size of Kendo UI DropDownList
提问by Dhwani
I am tring to get count of Kendo UI DropDownList but I am not getting right value. By taking count of Kendo UI, I want to remove last item from Kendo DropDownList. I tried following but not working:
我想计算 Kendo UI DropDownList 的数量，但我没有得到正确的值。通过计算 Kendo UI，我想从 Kendo DropDownList 中删除最后一个项目。我尝试了以下但不起作用：
1.
1.
var dropDown = $("#RoleDrp").data("kendoDropDownList");
var len = dropDown.value().length+1;
var itemToRemove = dropDown.dataSource.at(len);
dropDown.dataSource.remove(itemToRemove);
dropDown.select(0);
I am getting length as 6 but I have total 13 items in DropDownList.
我得到的长度为 6，但我在 DropDownList 中总共有 13 个项目。
2.
2.
var len = dropDown.length;
I am getting undefined.
我越来越不确定了。
回答by Devendra Soni
hey try this code to get length of kendo dropdown list:-
嘿，试试这个代码来获取剑道下拉列表的长度：-
var dropDown = $("#RoleDrp").data("kendoDropDownList");
var len =dropDown.dataSource.data().length;
alert(len);
Thanks
谢谢
