JavaScript Int32Array.from() Method
Last Updated :
11 Jul, 2023
The Javascript Int32Array array represents an array of two’s-complement 32-bit signed integers in the platform byte order. By default, the contents of Int32Array are initialized with 0.
The Int32Array.from() method is used to create a new Int32Array from an array-like or iterable object. So when you want to convert an arrayLike or iterable object to Int32Array 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:
Int32Array.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 into an Int32Array object.
- mapFn: This parameter is an optional parameter which is the Map function to call on every element of the Int32Array array.
- thisArg: This parameter is an optional parameter which is the value to use as this when executing mapFn.
Return Value:
This method returns a new Int32Array instance.
Below examples Illustrate the working of Int32Array.from() method in JavaScript:
Example 1: In this example, we will see a basic program of the JavaScript Int32Array.from() method to create Int32array from a string of integers.
javascript
let array = Int32Array.from( '765432345' );
console.log(array);
|
Output
Int32Array(9) [
7, 6, 5, 4, 3,
2, 3, 4, 5
]
Example 2: In this example, we will see a basic program of the JavaScript Int32Array.from() method to create a new Int32array by performing transformation at each element
javascript
let array = Int32Array.from(
[434, 4323, 43234, 433, 434, 343],
(z) => z * 32
);
console.log(array);
|
Output
Int32Array(6) [ 13888, 138336, 1383488, 13856, 13888, 10976 ]
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