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

var a = [];

it is use for brackets for an array of simple values. eg.

var name=["a","b","c"]

var a={}

is use for value arrays and objects/properties also. eg.

var programmer = { 'name':'special', 'url':'www.google.com'}