JavaScript typedArray.slice() Method

The typedArray.slice() is an inbuilt function in JavaScript which is used to return the part of the elements of the given typedArray.

typedArray.slice(begin, end)

Parameters: It takes two parameter which are specified below-

• begin: It is the beginning index and it can be negative too.
• end: It is the ending index and here slice extracts elements up to but not including end index.

Return value: It returns a new typedArray containing the extracted elements. 

Example: JavaScript code to show the working of this function.

javascript

// Creating some typedArray containing same values
const A = new Uint8Array([ 5, 10, 15, 20, 25 ]);
const B = new Uint8Array([ 5, 10, 15, 20, 25 ]);
const C = new Uint8Array([ 5, 10, 15, 20, 25 ]);
const D = new Uint8Array([ 5, 10, 15, 20, 25 ]);
const E = new Uint8Array([ 5, 10, 15, 20, 25 ]);
const F = new Uint8Array([ 5, 10, 15, 20, 25 ]);

// Calling slice function with starting and ending index
var a = A.slice(1, 2);
var b = B.slice(0, 3);
var c = C.slice(4);
var d = D.slice(0

// Here index is negative so it extract element
// from the end of the typedArray
var e = E.slice(-2);
var f = F.slice();

// Printing the extracted arrays
console.log(a);
console.log(b);
console.log(c);
console.log(d);
console.log(e);
console.log(f);

Output:

10
5,10,15
25
5,10,15,20,25
20,25
5,10,15,20,25