我在 observableArray workouts
中有一个数组exercises
。我想添加从中删除项目的功能。试图使其成为可观察数组:
self.exercises = ko.observableArray();
并添加了删除项目的函数:
self.removeExercise = function() {
self.exercises.remove(this);
};
但什么也没发生。虽然相同的函数适用于父数组workouts
。除此之外,我还有一个简单的函数来编辑数组中的项目,如下所示:
this.edit = function() { this.editing(true) }
并尝试将其绑定到我的观点中:
<span data-bind="text: name, click: edit"> </span>
但它不起作用。问题可能出在哪里?
这是我的观点
<div class="content">
<ul data-bind="foreach: workouts">
<li>
<span data-bind="text: name, click: edit"> </span>
<a href="#" data-bind="click: $parent.removeWorkout">Remove</a>
<ul data-bind="foreach: exercises">
<li>
<span data-bind="text: name"> </span>
<a href="#" data-bind="click: $parent.removeExercise">remove</a>
</li>
</ul>
</li>
</ul>
</div>
和视图模型:
function AppViewModel() {
var self = this;
self.workouts = ko.observableArray([
{name: "Workout1", exercises:[
{ name: "Exercise1.1" },
{ name: "Exercise1.2" },
{ name: "Exercise1.3" }
]},
]);
self.exercises = ko.observableArray();
self.removeWorkout = function() {
self.workouts.remove(this);
};
self.removeExercise = function() {
self.exercises.remove(this);
};
this.editing = ko.observable(false);
this.edit = function() { this.editing(true) }
}
ko.applyBindings(new AppViewModel);
下面是一个关于 jsfiddle 的例子:http://jsfiddle.net/c9fQB/
谢谢!
bindingContext 应该为 removeExercise $root,练习应该是一个 observableArray。试试这个: http://jsfiddle.net/Ag8rr/
可观察量代码:
self.exercises = ko.observableArray([
{ name: "Exercise1.1" },
{ name: "Exercise1.2" },
{ name: "Exercise1.3" }
]);
self.workouts = ko.observableArray([
{name: "Workout1", exercises:self.exercises},
]);