Float64Array

Syntax

new Float64Array(); // new in ES2017
new Float64Array(length);
new Float64Array(typedArray);
new Float64Array(object);
new Float64Array(buffer [, byteOffset [, length]]);

For more information about the constructor syntax and the parameters, see TypedArray.

Properties

Float64Array.BYTES_PER_ELEMENT

Returns a number value of the element size. 8 in the case of an Float64Array.

Float64Array.length

Static length property whose value is 0. For the actual length (number of elements), see Float64Array.prototype.length.

Float64Array.name

Returns the string value of the constructor name. In the case of the Float64Array type: "Float64Array".

Float64Array.prototype

Prototype for the TypedArray objects.

Methods

Float64Array.from()

Creates a new Float64Array from an array-like or iterable object. See also Array.from().

Float64Array.of()

Creates a new Float64Array with a variable number of arguments. See also Array.of().

Float64Array prototype

All Float64Array objects inherit from %TypedArray%.prototype.

Properties

Float64Array.prototype.constructor

Returns the function that created an instance's prototype. This is the Float64Array constructor by default.

Float64Array.prototype.buffer Только для чтения

Returns the ArrayBuffer referenced by the Float64Array Fixed at construction time and thus read only.

Float64Array.prototype.byteLength Только для чтения

Returns the length (in bytes) of the Float64Array from the start of its ArrayBuffer. Fixed at construction time and thus read only.

Float64Array.prototype.byteOffset Только для чтения

Returns the offset (in bytes) of the Float64Array from the start of its ArrayBuffer. Fixed at construction time and thus read only.

Float64Array.prototype.length Только для чтения

Returns the number of elements hold in the Float64Array. Fixed at construction time and thus read only.

Methods

Float64Array.prototype.copyWithin()

Copies a sequence of array elements within the array. See also Array.prototype.copyWithin().

Float64Array.prototype.entries()

Returns a new Array Iterator object that contains the key/value pairs for each index in the array. See also Array.prototype.entries().

Float64Array.prototype.every()

Tests whether all elements in the array pass the test provided by a function. See also Array.prototype.every().

Float64Array.prototype.fill()

Fills all the elements of an array from a start index to an end index with a static value. See also Array.prototype.fill().

Float64Array.prototype.filter()

Creates a new array with all of the elements of this array for which the provided filtering function returns true. See also Array.prototype.filter().

Float64Array.prototype.find()

Returns the found value in the array, if an element in the array satisfies the provided testing function or undefined if not found. See also Array.prototype.find().

Float64Array.prototype.findIndex()

Returns the found index in the array, if an element in the array satisfies the provided testing function or -1 if not found. See also Array.prototype.findIndex().

Float64Array.prototype.forEach()

Calls a function for each element in the array. See also Array.prototype.forEach().

Float64Array.prototype.includes()

Determines whether a typed array includes a certain element, returning true or false as appropriate. See also Array.prototype.includes().