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javascript slice vs splice

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Kelly answered on July 26, 2020 Popularity 10/10 Helpfulness 4/10

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javascript slice vs splice

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var array=[1,2,3,4,5];
console.log(array.splice(2));
// shows [3, 4, 5], returned removed item(s) as a new array object.
 
console.log(array);
// shows [1, 2], original array altered.
 
var array2=[6,7,8,9,0];
console.log(array2.splice(2,1));
// shows [8]
 
console.log(array2.splice(2,0));
//shows [] , as no item(s) removed.
 
console.log(array2);
// shows [6,7,9,0]
 
var array3=[11,12,13,14,15];
console.log(array3.splice(2,1,"Hello","World"));
// shows [13]
 
console.log(array3);
// shows [11, 12, "Hello", "World", 14, 15]
 
           -5 -4 -3 -2 -1
            |  |  |  |  |
var array4=[16,17,18,19,20];
             |  |  |  |  |
             0  1  2  3  4
 
console.log(array4.splice(-2,1,"me"));
// shows  [19]
 
console.log(array4);
// shows [16, 17, 18, "me", 20]

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: www.tothenew.com

Tags: javascript slice

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Contributed on Jul 26 2020

Kelly

0 Answers Avg Quality 2/10

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difference between slice and splice

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splice() method changes the original array. 
slice() method doesn't change the original array.

both returned selected elements.

Popularity 10/10 Helpfulness 5/10 Language javascript

Source: Grepper

Tags: between

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Contributed on May 08 2022

Abhishek

0 Answers Avg Quality 2/10

javascript slice vs splice

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var array=[1,2,3,4,5]
console.log(array.slice(2));
// shows [3, 4, 5], returned selected element(s).
 
console.log(array.slice(-2));
// shows [4, 5], returned selected element(s).
console.log(array);
// shows [1, 2, 3, 4, 5], original array remains intact.
 
var array2=[6,7,8,9,0];
console.log(array2.slice(2,4));
// shows [8, 9]
 
console.log(array2.slice(-2,4));
// shows [9]
 
console.log(array2.slice(-3,-1));
// shows [8, 9]
 
console.log(array2);
// shows [6, 7, 8, 9, 0]

Popularity 10/10 Helpfulness 5/10 Language javascript

Source: www.tothenew.com

Tags: javascript j

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Contributed on Jul 26 2020

Kelly

0 Answers Avg Quality 2/10

difference between slice and splice

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/*-------------slice and splice-------------*/
let myArray = [1, 2, 3, 4, 5]
let myArray2 = myArray.slice(1, 3)
console.log('myArray', myArray) // does not modify original array
console.log('myArray2', myArray2) // return new array , what is deleted
console.log('------------', )
let myArray3 = [1, 2, 3, 4, 5]
let myArray4 = myArray3.splice(1, 3)
console.log('myArray3', myArray3) // modify original array , what left after deletion
console.log('myArray4', myArray4) // return new array , what is deleted

Popularity 8/10 Helpfulness 4/10 Language javascript

Source: ashabb.com

Tags: between

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Contributed on May 31 2024

ASHABB

0 Answers Avg Quality 2/10

slice vs splice javascript

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Lets take an array const arr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
Doing slice operation on the following array will result in the output:-
  
console.log(arr.slice(0, 3))
[ 0, 1, 2 ]
console.log(arr.slice(3))
[3, 4, 5, 6, 7, 8, 9]
console.log(arr.slice(-3))
[ 7, 8, 9 ]
console.log(arr.slice(-4,-1))
[ 6, 7, 8 ]

slice() returns a potion of an array or makes a shallow copy of the array

-----------------------------------------
  
However the splice() operation modifies the original
array by removing or replacing elements.
Its syntax is:
splice(start, optional delete count, optional items to add)

const food = ['pizza', 'cake', 'salad', 'cookie'];
food.splice(1,0,"biriyani")
The result would be -
['pizza', 'biriyani', 'cake', 'salad', 'cookie'];

but remember this pretty important point - This makes changes to 
the original array and it only returns the deleted 
elements if we console.log it.

If we console.log(food.splice(1,0,"biriyani")), 
then we would get back an empty array because
nothing was removed from our array.

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Dec 23 2022

Vanshika

0 Answers Avg Quality 2/10

javascript slice vs splice

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