JavaScript Array slice() Method

Last Updated : 15 Jan, 2026

The slice() method allows you to copy a specific portion of an array. It creates a new array containing only the selected elements.

  • It takes a start index and an end index to decide which elements to extract.
  • The element at the end index is not included in the result.
  • It performs a non-destructive operation, so the original array is not changed.
JavaScript 
let fruits = ["Apple", "Banana", "Mango", "Orange", "Grapes"];

let slicedFruits = fruits.slice(1, 4);

console.log(slicedFruits);

Syntax:

arr.slice(begin, end);

Parameters:

  • begin: This parameter defines the starting index from where the portion is to be extracted. If this argument is missing then the method takes begin as 0 as it is the default start value.
  • end: Parameter specifying the end index for extracting a portion from an array, defaulting to array length if undefined, adjusting for exceeding length.

Return value:

This method returns a new array containing some portion of the original array. 

Example 1: Extracting elements between two indexes

JavaScript 
function func() {
    // Original Array
    let arr = [23, 56, 87, 32, 75, 13];
    // Extracted array
    let new_arr = arr.slice(2, 4);
    console.log(arr);
    console.log(new_arr);
}
func();
  • The slice() method is used to extract a portion of an array.
  • It starts extracting elements from index 2.
  • It includes all elements before index 4.
  • Elements at index 2 and 3 are included in the result.

Example 2: Passing no arguments

JavaScript 
function func() {
    //Original Array
    let arr = [23, 56, 87, 32, 75, 13];
    //Extracted array
    let new_arr = arr.slice();
    console.log(arr);
    console.log(new_arr);
}
func();
  • The slice() method is called without any arguments.
  • It extracts the entire string.
  • All characters are included in the result.
  • A new copy of the original string is returned.

Example 3: Extracting array from index 2

JavaScript 
function func() {

    //Original Array
    let arr = [23, 56, 87, 32, 75, 13];
    
    //Extracted array
    let new_arr = arr.slice(2);
    console.log(arr);
    console.log(new_arr);
}
func();
  • The slice() method starts extracting from index 2.
  • It continues till the end of the array.
  • All elements from index 2 onward are included.
  • The extracted elements are returned as a new array.

Example 4: Slicing the nested Array

JavaScript 
function func() {

    // Original Array
    let arr = [23, [87, 32, 75, 27,3,10,18 ,13]];
    
    // Extracted array
    let new_arr = arr[1].slice(2, 4);
    console.log(arr);
    console.log(new_arr);
}
func();
  • The slice() method is applied to a nested array.
  • It extracts specific elements from the array.
  • The selected elements are copied into a new array.
  • The original nested array remains unchanged.
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