Javascript KnockoutJs计算数组计算不正确
代码如下:EmployeeModel是viewModel,问题是当我在employees(obs数组)中更改项的属性deletedFlag时,deletedItems不会更新 我怎样才能解决这个问题Javascript KnockoutJs计算数组计算不正确,javascript,mvvm,knockout.js,Javascript,Mvvm,Knockout.js,代码如下:EmployeeModel是viewModel,问题是当我在employees(obs数组)中更改项的属性deletedFlag时,deletedItems不会更新 我怎样才能解决这个问题 function Employee(data) { this.employeid = ko.observable(data.employeid); this.name = ko.observable(data.name); this.isactive = ko.obser
function Employee(data) {
this.employeid = ko.observable(data.employeid);
this.name = ko.observable(data.name);
this.isactive = ko.observable(data.isactive);
this.deletedFlag = ko.observable(false);
}
var EmployeeModel = function () {
var self = this;
self.employees = ko.observableArray([]);
self.deletedItems = ko.computed(function () {
return ko.utils.arrayFilter(self.employees(), function (item) {
return item.deletedFlag == true;
});
}, this);
}
编辑:下面的代码将数组中的一项标记为删除
self.removeEmployee = function (employee) {
employee.deletedFlag(true);
};
属性
deletedFlag
是可观察的,因此您需要通过将其作为函数调用来检索其当前值(您不能直接将其与任何值进行比较):
self.deletedItems=ko.computed(函数(){
return ko.utils.arrayFilter(self.employees(),函数(项){
return item.deletedFlag()==true;//希望您在最后应用了ko绑定ko.applyBindings(new EmployeeModel());
还发布了一些HTML来处理它是的,您用几分钟时间就解决了我的问题:)非常感谢!
self.deletedItems = ko.computed(function () {
return ko.utils.arrayFilter(self.employees(), function (item) {
return item.deletedFlag() == true; // <===
});
}, this);