What’s the difference between “{}” and “[]” while declaring a JavaScript array?

Question

What’s the difference between “{}” and “[]” while declaring a JavaScript array? Normally I declare like

var a=[];

What is the meaning of de

Answer 1

they are two different things..

[] is declaring an Array:
given, a list of elements held by numeric index.

{} is declaring a new object:
given, an object with fields with Names and type+value,
some like to think of it as "Associative Array". but are not arrays, in their representation.

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