JavaScript Array Methods - w3Schools - Chapter 25 - Urdu Hindi
Array length
Array toString()
Array pop()
Array push()
Array shift()
Array unshift()
Array join()
Array delete()
Array concat()
Array flat()
Array splice()
Array slice()
Warning !
Array elements can be deleted using the JavaScript operator delete.
Using delete leaves undefined holes in the array.
Use pop() or shift() instead.
The concat() method does not change the existing arrays. It always returns a new array.
Flattening an Array
Flattening an array is the process of reducing the dimensionality of an array.
The flat() method creates a new array with sub-array elements concatenated to a specified depth.
Automatic toString()