Arrays Part-04:
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How to Remove elements from an array:
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1) pop():
=========
==> can use to remove/return the last element of an array
Ex: [10,20,30,40]
pop() ==> 40
Syntax:
	array-name-object.pop()

let a = [100,true,'A','R','B','JavaScript',2000,2024]

console.log("The Given array = ");
console.log(a);

var return1 = a.pop()
console.log("The Array after the pop operation is = ");
console.log(a);
console.log("The Returned value = ",return1);

console.log("The Returned Value = ",a.pop());
console.log("The Array after the pop operation is = ");
console.log(a);

How to understand the return value of the given pre-defined function?
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two ways:
1) use the function call to the variable
and print that variable.
2) directly define the function call in print methods like: log(), write() etc.

Note:
=====
using pop(), we cannot remove the specified element and also not possible to remove more than one element.

let a = [100,true,'A','R','B','JavaScript',2000,2024]

console.log("The Given array = ");
console.log(a);

a.pop(true,100,'A');

console.log("The Array after the delete operation is = ");
console.log(a);
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2) shift():
===========
==> can use to remove/return the first element of an array.
Syntax:
	array-name.shift();

let a = [100,true,'A','R','B','JavaScript',2000,2024]

console.log("The Given array = ");
console.log(a);

// shift operation
console.log("The Deleted Element = ",a.shift()); // 100 got removed
console.log("The Array after the shift operation is = ");
console.log(a);

console.log("The Deleted Value = ",a.shift()); // true can be removed

console.log("The Array after the shift operation is = ");
console.log(a);
a.shift('ABC','R','B');
console.log(a);
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3) splice():
============
Syntax:
	array-name.splice(index, count);

let a = [100,true,'A','R','B','JavaScript',2000,2024]

console.log("The Given array = ");
console.log(a);

a.splice(2,0);
console.log(a);
a.splice(2,3);
console.log(a);
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Sorting of array elements:
==========================
Ecommerce application:
	cart
at 6am ==> p1
at 6.28 am ==> p2
at 7.30 ==> p3
at 7.56 ==> p4

==> sorting ===> arranging of elements in ascending or descending order.
1) sort():
=========
==> sorting in ascending order by default.
Syntax:
	array-name.sort()

2) reverse():
==============
==> to reverse the array.
Syntax:
	array-name.reverse()

let a = [100,true,'A','R','B','JavaScript',2000,2024]

console.log("The Given array = ");
console.log(a);

a.sort()
console.log("The Array after the sorting is (Ascending Order)= ");
console.log(a);

(a.sort()).reverse();
console.log("The Array after the sorting is (Descending Order)= ");
console.log(a);


Assignment:
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WAP in javascript, to add new element into the dropdown and also remove the first dropdown option.
Ex:
	Dropdown:
		Electronics
		Fashion
		Grosessories
		Beauty products

	into this:
		want to add:
			Laptops & Mobiles
	and remove:
		Electronics

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