Class Int8Array

• Object
  • Int8Array

An optimized array to store 8-bit signed integer numbers. Elements of this array are stored in an ArrayBuffer object.

API Versioned:

From version 21.2.

Constants

BYTES_PER_ELEMENT : Number=1

Number value of the element size.

Properties

buffer : ArrayBuffer

The array buffer referenced by this typed array.

byteLength : Number

The number of bytes in the array buffer used by this typed array.

byteOffset : Number

The start offset for this typed array within the array buffer.

length : Number

The number of elements.

Constructor Summary

Int8Array()

Creates an empty array.

Int8Array(length : Number)

Creates an array with the given element count.

Int8Array(typedArray : Object)

Creates an array as a copy of the passed typed array.

Int8Array(array : Array)

Creates an array as a copy of the passed array.

Int8Array(buffer : ArrayBuffer, byteOffset : Number, length : Number)

Creates a typed array as a view on the given ArrayBuffer.

Method Summary

get(index : Number) : Number

Returns the value at the specified index.

set(values : Object, offset : Number) : void

Copies all values from the source array into this typed array.

subarray(begin : Number, end : Number) : Int8Array

Returns a new array object based on the same ArrayBuffer store.

Methods inherited from class Object

assign, create, create, defineProperties, defineProperty, entries, freeze, fromEntries, getOwnPropertyDescriptor, getOwnPropertyNames, getOwnPropertySymbols, getPrototypeOf, hasOwnProperty, is, isExtensible, isFrozen, isPrototypeOf, isSealed, keys, preventExtensions, propertyIsEnumerable, seal, setPrototypeOf, toLocaleString, toString, valueOf, values

Constructor Detail

Int8Array

publicInt8Array()

Creates an empty array.

Int8Array

publicInt8Array(length : Number)

Creates an array with the given element count.

Parameters:

length - The number of elements.

Int8Array

publicInt8Array(typedArray : Object)

Creates an array as a copy of the passed typed array.

Parameters:

typedArray - The source typed array.

Int8Array

publicInt8Array(array : Array)

Creates an array as a copy of the passed array.

Parameters:

array - The source array.

Int8Array

publicInt8Array(buffer : ArrayBuffer, byteOffset : Number, length : Number)

Creates a typed array as a view on the given ArrayBuffer.

Parameters:

buffer - The array buffer storage object.

byteOffset - Optional. The offset within the array buffer in bytes.

length - Optional. The number of elements for the target typed array. The passed array buffer must be large enough to store the number of elements specified.

Method Detail

get

get(index : Number) : Number

Returns the value at the specified index.
Note: This is not ECMAScript standard. Use array element access syntax for single value access.

Parameters:

index - The index to use.

Returns:

The value at the specified index.

set

set(values : Object, offset : Number) : void

Copies all values from the source array into this typed array.

Parameters:

values - The source values. Can be an array or a typed array.

offset - Optional. Target offset.

subarray

subarray(begin : Number, end : Number) : Int8Array

Returns a new array object based on the same ArrayBuffer store.

Parameters:

begin - Optional. The first included element.

end - Optional. The index of the end. This element is not included.

Returns:

The new array object.