blocks|key|537220|text|Backbone正在检查设置值是否与之前的值相同(查看https://github.com/documentcloud/backbone/blob/master/backbone.js#L210和on)。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|537221|在您的示例中，数组仍然是相同的，但其中的值发生了变化。这很难解决。创建数组的新副本似乎是一种开销。我建议在采用函数中直接调用change事件作为解决方案：|537222|adopt:+function(newChildsName){
++var+children_array+=+this.get('children');
++children_array.push(newChildsName);
++this.set({children:children_array});
++this.trigger("change:children");
}|code-block|syntax|javascript|537223|我建议在backbone+github存储库上创建一个问题，可能会添加一个"+force“选项来强制更新(从而触发事件)模型上的属性。|537224|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/documentcloud/backbone/blob/master/backbone.js#L210^0|R|1Y|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|6|7|Y|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|Z|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|10|8|@]|9|@]|C|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

Backbone is checking if the set value is the same as the previous value (look at <a href="https://github.com/documentcloud/backbone/blob/master/backbone.js#L210">https://github.com/documentcloud/backbone/blob/master/backbone.js#L210</a> and on).

In your example, the array is still the same but the value inside changed. This is tricky to solve. Creating a new copy of the array seems to be overhead. I would suggest to call the change event directly in your adopt function as a solution:

<pre><code>adopt: function(newChildsName){
 var children_array = this.get('children');
 children_array.push(newChildsName);
 this.set({children:children_array});
 this.trigger("change:children");
}
</code></pre>

I would suggest to create an issue on backbone github repository to maybe add a "force" option to force the update (thus triggering the event) of attributes on a model.

blocks|key|537233|text|这是一个有点尴尬的解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|537234|adopt:+function(newChildsName){
++var+children_array+=+this.get('children').splice(0);
++children_array.push(newChildsName);
++this.set({children:children_array});
}|code-block|syntax|javascript|537235|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Here is a bit awkward solution:

<pre><code>adopt: function(newChildsName){
 var children_array = this.get('children').splice(0);
 children_array.push(newChildsName);
 this.set({children:children_array});
}
</code></pre>

blocks|key|169623|text|我们可以将它用作集合，并监听集合的添加、删除事件，而不是将子数组用作普通数组。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|169624|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Instead of using children as an plain array we can use it as an collection and listen to the add,remove events of the collection.

Here's the <a href="http://jsfiddle.net/colintoh/JGerp/3/">Example</a>

I was following this excellent tutorial by Thomas Davis : <a href="http://backbonetutorials.com/what-is-a-model/">What is a model?</a>
Somehow the 'change' binding is not firing. What am I doing wrong here?

Binding for "change" in backbone model not working

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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这是我遵循了Thomas Davis的这篇优秀的教程：不知何故'change‘绑定不能触发。我在这里做错了什么？

问backbone模型中的"change“绑定不起作用
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