The Javascript Uint16Array represents an array of 16-bit unsigned integers in the platform byte order. By default, the contents of Uint16Array are initialized to 0. The Uint16Array.from() function is used to create a new Uint16Array from an array-like or iterable object. So when you want to convert an arrayLike or iterable object then you can use this function by passing the object as a parameter to this function along with the map function and value used for the map function if needed.
Syntax:
Uint16Array.from( source, mapFn, thisArg )
Parameters: This method accepts three parameters as mentioned above and described below.
- source: This parameter is an array-like or iterable object which is used to convert to an Uint16Array object.
- mapFn: This parameter is optional which is the Map function to call on every element of the Uint16Array .
- thisArg: This parameter is optional which is a value to use as this when executing mapFn.
Return Value: This method returns a new Uint16Array instance.
The below examples illustrate the Unit16Array.from() Method in JavaScript:
Example 1: This example shows the basic working of the Unit16Array.from() Method in JavaScript.
javascript
// Create a Uint16Array from a string// like structurelet array = Uint16Array.from('543234543');// Print the resultconsole.log(array); |
Output:
5, 4, 3, 2, 3, 4, 5, 4, 3
Example 2: This example shows the basic working of the Unit16Array.from() Method in JavaScript.
javascript
// Create a Uint16Array from a array// multiplying 3 to each number// using functionlet array = Uint16Array.from([32, 53, 122, 434, 213], z => z * 3);// Print the resultconsole.log(array); |
Output:
96, 159, 366, 1302, 639
