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
// Create an Int32Array array from a// string like structurelet array = Int32Array.from('765432345');// Print the resultconsole.log(array); |
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
// Create an Int32Array array by converting// numbers 32 times the actual numberlet array = Int32Array.from( [434, 4323, 43234, 433, 434, 343], (z) => z * 32);// Display the resultconsole.log(array); |
Int32Array(6) [ 13888, 138336, 1383488, 13856, 13888, 10976 ]
