JavaScript typedArray.map() Method
Last Updated :
10 Feb, 2023
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The typedArray.map() is an inbuilt function in JavaScript which is used to create a new typedArray with the result of a provided function on each element of the given typedArray.
Syntax:
typedArray.map(callback)
Parameters: It accepts a parameter callback function which accept some parameter which are specified below-
- currentValue: It is the current element which is being processed in the typedArray.
- index: It is the index of the current element which is being processed in the typedArray.
- array: It is the typedArray which is being called.
Return value: It returns a new typedArray with the result of a provided function on each element of the given typedArray.
Example 1:
// Creating a typedArray with some elements
const A = new Uint8Array([4, 9, 16, 25, 36]);
// Calling map() function with the parameter
// Math.sqrt function which find square root
// of the typedArray's elements
const B = A.map(Math.sqrt);
// Printing the result of the function
console.log(B);
Output:
2,3,4,5,6
Example 2:
// Creating a typedArray with some elements
var A = new Uint8Array([1, 2, 3, 4, 5, 6]);
// Calling map() function
var B = A.map(function(a) {
return a * 5;
});
// Returning the results
console.log(B);
Output:
5,10,15,20,25,30
