创建多个具有相同值的索引 - 简写
我正在寻找一种方法来最小化数组的创建，其中所有索引都具有相同的值。这可能不可能，但我会发现它非常方便。
考虑：（
var layer = [];
layer['game'] = new Kinetic.Layer();
layer['navigation'] = new Kinetic.Layer();
layer['notification'] = new Kinetic.Layer();
其中 Kinetic.Layer 是一个对象，但我怀疑这并不重要）
寻找类似的东西：
var layer['game','navigation','notification'] = new Kinetic.Layer();
这可能吗？当然，它并不是真正需要的 - 但我发现它非常方便，重复代码是一种不好的做法。
不，我不能有一个索引或变量，因为这些对象稍后会在我的代码中更改 - 并且必须在使用之前声明它们。
I'm looking for a way to minimize the creation of an array where all indexes would have the same value. It might not be possible, but I would find it very handy.
Consider:
var layer = [];
layer['game'] = new Kinetic.Layer();
layer['navigation'] = new Kinetic.Layer();
layer['notification'] = new Kinetic.Layer();
(where Kinetic.Layer is an object, however I suspect that it doesn't matter)
Looking for something like:
var layer['game','navigation','notification'] = new Kinetic.Layer();
Is this even possible? It, of course, isn't truly needed - but i would find it very handy, repeating code is kinda a bad practice.
And no, I can't have one single index or variable, as theese objects will change later in my code - and they have to be declared before usage.
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评论（2）
在这种情况下，简写不会相同，因为所有三个层都指向相同的
Kinetic.Layer而不是具有三个不同的层。因此，就您而言，请勿尝试速记。
然而，一般来说，您可以将相同的值分配给多个变量，如下所示：
旁注：您正在使用数组对象
[]，然后分配字符串键 - 这并不严格正确，并且您应该改用通用对象{}。In this case a shorthand would NOT be the same, as all three would point to the same
Kinetic.Layerinstead of having three different Layers.So, in your case, do NOT attempt a shorthand.
However in general, you can assign the same value to several variables like this:
Side-note: You're using an array object
[]and then assigning string keys - this isn't strictly correct, and you should be using a generic object{}instead.我很确定这应该有效，不记得我在哪里看到过它，但我在某个地方看到过它。
I'm pretty sure this should work, can't remember where I've seen it but I've seen it kicking around somewhere.