javascript - what to use between [] and {} in Angularjs - Stack Overflow

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I need to make multiple objects of same element. I cant figure it out that which should I use between [] and {} to make my data structure.

I am not clear about the difference between [] and {}. I am using Angularjs

I need to make multiple objects of same element. I cant figure it out that which should I use between [] and {} to make my data structure.

I am not clear about the difference between [] and {}. I am using Angularjs

• javascript
• arrays
• angularjs
• object

Share Improve this question Follow edited Mar 16, 2016 at 8:27 Zibellino 1,43366 gold badges2626 silver badges3333 bronze badges asked Mar 16, 2016 at 8:18 n3018n3018 12911 gold badge22 silver badges1212 bronze badges 4

• What language are you using? – TheBigH Commented Mar 16, 2016 at 8:19
• could you just precise which languare you are using ? – xiawi Commented Mar 16, 2016 at 8:19
• 1 AngularJS is a JavaScript framework (read the tag) so chances are it's JavaScript indeed. – Zibellino Commented Mar 16, 2016 at 8:23
• I need to know what is the difference between using [] and {} to pass elements in the angularjs javascript controller – n3018 Commented Mar 16, 2016 at 8:25

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2 Answers 2

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[] represents Array

{} represents Object

The advantage of using array is the ability to use native functions like forEach, sort, split, splice and more.

The advantage of using object is to getting easy way to find specific item from list of items.
For example, if you have a list of objects with unique ID for each one and you create object that contain them by ID:

var list = {"123": {ID: 123, ...}, "456": {ID: 456, ...}}

Now you can find item by ID without searching in all items for this ID just with list[ID]

Use [] if you want an array a.k.a. a list of objects. Use {} if you want to create a single object.

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