javascript - In a JS array of objects, should I use a keys to identify each object? -

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I'm still learning JavaScript patterns, and I'm curious about it.

If I have an array of objects, should not I use the keys of objects (eg A), or their keys (example B)?

An array of objects without any key:

<(id: 24325, name: "Jimi", gender: "male"), "male", weapon_off_choice: "kangaroo cannon" }, {ID: 24325, Name: "Jimmy", Gender: "Male", \ "Sushi Blaster \"}, ...]

or as unique ID Key An array of objects to use: 

  var soylent_green_candidates = [12341: {name: "don", gender: "male", weapon_of_choice: "kangaroo cannon"}, 24325: {name: "Jimmy", Gender: "Male", Weapon_of_choice: "Sushi Blaster"}, ...]

Your second example is invalid, so that the question should sleep.

In Javascript you have the option of arrays , which is sorted but essentially "key is low". Each array entry can be reached only for its numerical index, period.
The other options are objects , which do not have any guaranteed order, but they are imposed on the basis of criteria.

:

(Note: When you can arrays arbitrarily numerical index for keys based on order and requirement If you use, you can not do the literal syntax [..] , and this is usually not a good idea. If you need a clear key, then you want the objects.)


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