- In javascript,array methods are built in the functions that help you add,remove,or manipulate elements in the array.
1. Array length
- The
lengthis property that tells you how many elements are in an array.
EXAMPLE:
- Inside the array have a 4 elements.So the size of length is 4.
OUTPUT:
4
2. Array toString()
- The
toString()array method that coverets an array an array into a comma separated string.
EXAMPLE:
The toString method is join all elements into a string separate
a comma.this method dose not change the original array.
OUTPUT:
BMW,TATA,BENZ,VOLVO
3. Array at()
- The
at()method is used to access an elements in array using its indexed.
EXAMPLE:
- The carbrand.at(2) returns an indexed element 2 is the "BENZ"
- Dose not modify the array.
OUTPUT:
BENZ
4. Array join()
The
join()method is used to covert an array into a string it's join all elements with a specified separator.It's behaves just like
toString().
EXAMPLE:
It this join() array method we gives the ( - ).so it's create a array into a string joins with inbetween (-) all elements.
The original array stays unchanged.
OUTPUT:
BMW-TATA-BENZ-VOLVO
5. Array pop()
- The
pop()is used to remove the last elements from a array and it's return that elements.
EXAMPLE:
- This pop() method is remove the array last elements "VOLVO"
- it's modified the original array.
OUTPUT:
[ 'BMW', 'TATA', 'BENZ' ]
6. Array push()
- The
push()method is used to add one or more elements in end of the array.
EXAMPLE:
This push() method add element "AUDI" to the end an array.
It is also modified the original array and new length of the array.
OUTPUT:
[ 'BMW', 'TATA', 'BENZ', 'VOLVO', 'AUDI' ]
7. Array shift()
- The
shift()array method is used to remove the first elements from the array and return that all other elements to string index.
EXAMPLE:
This shift() method is remove the first element "BMW" and then remaining element are shift into the place of removed element.
This method is changed the original array.
OUTPUT:
[ 'TATA', 'BENZ', 'VOLVO' ]
8. Array unshift()
- The
Array unshift()is used to add one or more elements to the starting from the array.
EXAMPLE:
This unshift() method is add "MG" elements beginning the array.
It's changed the original array and return the new length of the array.
OUTPUT:
[ 'MG', 'BMW', 'TATA', 'BENZ', 'VOLVO' ]
9. Array.isArray()
- The
Array.isArray()method is used to check whatever a value is an array it's return thetrueandfalseotherwish it's not a array.
EXAMPLE:
- If the carbrand is array.so the return is "true".
OUTPUT:
true
10. Array delete()
The
Array delete()method is used leaves undefined holes in the array.If you the pop() or shift() method instead of delete.
EXAMPLE:
Use
deletemethod to remove the mentioned value.But another elements are not shift the array.The array length is not changed.
OUTPUT:
[ 'BMW', <1 empty item>, 'BENZ', 'VOLVO' ]
11. Array concat()
- The
concat()is used to merge two or more array into the new array without changing the original array
EXAMPLE:
The concat method merge the carbrand2 array and carbrand1 array in a combine with order for all values
The original array dose not changed
OUTPUT:
[ "BMW", "TATA", "BENZ", "VOLVO", "AUDI", "HONDA", "TOYOTA", "KIA" ]
12. copyWithin()
- The
copyWithin()method used to copy the part of array elements to the another location in the same array
EXAMPLE:
OUTPUT:
[ 'BMW', 'TATA', 'BENZ', 'TATA' ]
13. Array flat()
- A
Array flat()method is used create a new array where sub-array elements are marge with main array
EXAMPLE:
OUTPUT:
[ 'BMW', 'TATA', 'BENZ', 'VOLVO' ]
14. Array slice()
- The
slice()method is slice out a piece of array into a new array
EXAMPLE:
Return a new array
It's not changed the original array
OUTPUT:
[ 'BMW', 'TATA' ]
15. Array splice()
- The
splice()method is used to add,remove,or replace elements in an array
EXAMPLES:
removing elements
Adding elements
Replace elements
16. Array toSpliced()
EXAMPLE:


















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