Javascript BigInt64Array subarray()

Introduction

The Javascript BigInt64Array subarray() method returns a sub typed array for this BigInt64Array object. 

BigInt64Array.subarray([begin [,end]])
Parameter
 Optional
 Meaning
begin


 Optional


 Element to begin at.
The offset is inclusive.
The whole array is returned if this value is not specified.
end


 Optional


 index to end.
The offset is exclusive.
If not specified, all elements from begin to the end of the array are included in the new array.

Using the subarray method 

var buffer = new ArrayBuffer(8);
var uint8 = new BigInt64Array(buffer);
uint8.set([1n, 2n, 3n]);/*from   ww  w.  ja v  a2  s  . co  m*/

console.log(uint8); // BigInt64Array [ 1n, 2n, 3n, 0, 0, 0, 0, 0 ]

var sub = uint8.subarray(0,4);

console.log(sub);   // BigInt64Array [ 1n, 2n, 3n, 0 ]



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