Difference between '{' and '[' when formatting JSON object

Question

Is there any difference between '{' and '[' when formatting a JSON object?

Answer 1

Yep one {...} is used to define a single object, while the other [...] is used to define a sequence of either objects, values or lists ...

objects are defined as such {key:object or list or value , ...} list ares nothing more than a sequence of either objects or lists or values, [objects or list or values, ... ]...

[{'value':1}, {'values':[1,2,3,3, {'a':'a', 'b':'b'}]}, 2, 3, 4]

Answer 2

'{ } ' used for Object and '[]' is used for Array in json

Like

var sampleObj = {                 a:1,                 b:'ab'                 };   var sampleArr = [1,'ab',4];