another closure example added
introducing function constructor
function literal means how we generally declare and execute functions
Introducing array defining in java script
access an array element
array length count in java script
number and string both can be stored in same array

Signed-off-by: zahidhasanriad <zahid.riad@gmail.com>
Array with single number element will be treated as array length
accessing array index 2 and change undefined value with zess
[undefined,undefined,zess,undefined,undefined]
Array is an object type
Array with single element
array literal
introducing multiple array in java script
defining and using an object in java script
object literal in java script
objects are called as an associative array if key: value pair is given for properties in js
object literal and object as an associative array another example