javascript Ember - 如何从控制器的数组属性中添加/删除元素
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Ember - How to add/remove elements from an array property on controller
提问by Marco Prins
Given a controller in ember:
给定一个 ember 控制器：
export default Ember.Controller.extend({
stringProp: "",
arrayProp: []
});
You can, for example, set the string property with this.set('stringProp', "Blah blah"). But that is overriding. What I want to do is pushto the array property.
例如，您可以使用this.set('stringProp', "Blah blah"). 但这是压倒一切的。我想要做的是推送到数组属性。
Is there a better (either shorter or faster) way than this:
有没有比这更好（更短或更快）的方法：
this.set('arrayProp', this.get('arrayProp').push(element));
Also, is there a shortcut for removingelements from such an array property?
另外，是否有从这样的数组属性中删除元素的快捷方式？
回答by
You are looking for pushObject, removeObject, etc. See http://emberjs.com/api/classes/Ember.MutableArray.html.
您正在寻找pushObject，removeObject等见http://emberjs.com/api/classes/Ember.MutableArray.html。
this.get('arrayProp').pushObject(element);
For correct behavior by computed properties and observers, it is strongly recommended you use these methods instead of pushor other native Array methods.
为了计算属性和观察者的正确行为，强烈建议您使用这些方法而不是push其他原生 Array 方法。
