我是Knockout JS的新手。我想在KO中应用验证。我使用过plugin knockout.validation.min.js。我已经像这样实现了它但没有工作
我的视图模型
$(document).ready(function myfunction() {
ko.applyBindings(new EmployeeKoViewModel());
})
var EmployeeKoViewModel = function () {
var self = this;
self.EmpId = ko.observable()
self.Name = ko.observable("").extend({ required: { message: "please enter employee name " } });
self.City = ko.observable("").extend({ required: { message: "please enter employee city " } });
self.Employees = ko.observableArray();
//GetEmployees();
var EmpData = {
EmpId: self.EmpId,
Name: self.Name,
City: self.City,
};
function GetEmployees() {
$.ajax({
type: "GET",
url: "/Employee/About",
}).done(function (data) {
self.Employees(data);
}).error(function (ex) {
alert("Error");
});
}
self.save = function () {
var EmployeeKoViewModel.errors = ko.validation.group(self);
if (!EmployeeKoViewModel.errors().length <= 0) {
EmployeeKoViewModel.errors.showAllMessages();
return false;
}
$.ajax({
type: "POST",
url: "/Employee/Save",
data: ko.toJSON(EmpData),
contentType: "application/json",
success: function (data) {
self.EmpId(data.EmpId);
GetEmployees();
},
error: function () {
alert("Failed");
}
});
//Ends Here
};
}
当我评论GetEmployees()方法但没有使用它时,我创建了fiddle它正在工作
答案 0 :(得分:1)
在这一行
var EmployeeKoViewModel.errors = ko.validation.group(self);
您正在尝试创建变量,但语法就像创建一个具有属性的对象,该属性当然是无效的。为了解决这个问题,您可以先初始化对象:
var EmployeeKoViewModel = {};
EmployeeKoViewModel.errors = ko.validation.group(self);
if (!EmployeeKoViewModel.errors().length <= 0) {
EmployeeKoViewModel.errors.showAllMessages();
return false;
}
这是一个有效的jsFiddle