1

exercises我在 observableArray中有一个数组workouts。我想添加从中删除项目的功能。试图使它成为一个 observableArray:

self.exercises = ko.observableArray();

并添加了删除项目的功能:

self.removeExercise = function() {
        self.exercises.remove(this);
    };

但什么也没有发生。虽然相同的函数适用于workouts父数组。除此之外,我还有一个用于编辑数组中项目的简单函数,如下所示:

this.edit = function() { this.editing(true) }

并尝试在我的视图中绑定它:

<span data-bind="text: name, click: edit"> </span>

但它不起作用。问题可能出在哪里?

这是我的看法

<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);

这是关于 jsfiddle 的示例:http: //jsfiddle.net/c9fQB/

谢谢!

4

1 回答 1

1

对于 removeExercise,bindingContext 应该是 $root,练习应该是 observableArray。试试这个:http: //jsfiddle.net/Ag8rr/

可观察代码:

    self.exercises = ko.observableArray([
        { name: "Exercise1.1" },
        { name: "Exercise1.2" },
        { name: "Exercise1.3" }
    ]);    

    self.workouts = ko.observableArray([
    {name: "Workout1", exercises:self.exercises},
]);
于 2013-10-23T12:15:17.873 回答