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Showing content from https://developer.mozilla.org/ru/docs/Web/JavaScript/Reference/Global_Objects/Int32Array below:

Int32Array - JavaScript | MDN

Int32Array

Baseline Widely available

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new Int32Array(); // Ð´Ð¾Ð±Ð°Ð²Ð»ÐµÐ½Ð¾ Ð² ES2017
new Int32Array(length);
new Int32Array(typedArray);
new Int32Array(object);
new Int32Array(buffer [, byteOffset [, length]]);

Ð¡Ð²Ð¾Ð¹ÑÑÐ²Ð°

Int32Array.BYTES_PER_ELEMENT: ÐÐ¾Ð·Ð²ÑÐ°ÑÐ°ÐµÑ ÑÐ¸ÑÐ»Ð¾Ð²Ð¾Ðµ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ðµ ÑÐ°Ð·Ð¼ÐµÑÐ° ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ°. 4 Ð² ÑÐ»ÑÑÐ°Ðµ Ñ Int32Array.
Int32Array.length: Ð¡Ð²Ð¾Ð¹ÑÑÐ²Ð¾ ÑÑÐ°ÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ°Ð·Ð¼ÐµÑÐ°, Ð·Ð½Ð°ÑÐµÐ½Ð¸Ðµ ÐºÐ¾ÑÐ¾ÑÐ¾Ð³Ð¾ ÑÐ°Ð²Ð½Ð¾ 3. ÐÐ»Ñ Ð°ÐºÑÑÐ°Ð»ÑÐ½Ð¾Ð³Ð¾ ÑÐ°Ð·Ð¼ÐµÑÐ° (ÐºÐ¾Ð»Ð¸ÑÐµÑÑÐ²Ð° ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð²), ÑÐ¼Ð¾ÑÑÐ¸ÑÐµ Int32Array.prototype.length.
Int32Array.name: ÐÐ¾Ð·Ð²ÑÐ°ÑÐ°ÐµÑ ÑÑÑÐ¾ÐºÐ¾Ð²Ð¾Ðµ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ðµ Ð½Ð°Ð·Ð²Ð°Ð½Ð¸Ñ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¾ÑÐ°. Ð ÑÐ»ÑÑÐ°Ðµ Ñ ÑÐ¸Ð¿Ð¾Ð¼ Int32Array: "Int32Array".
Int32Array.prototype: ÐÑÐ¾ÑÐ¾ÑÐ¸Ð¿ Ð´Ð»Ñ TypedArray Ð¾Ð±ÑÐµÐºÑÐ¾Ð².

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Int32Array.from(): Ð¡Ð¾Ð·Ð´Ð°ÑÑ Ð½Ð¾Ð²ÑÐ¹ Int32Array Ð¸Ð· Ð¼Ð°ÑÑÐ¸Ð²Ð¾Ð¿Ð¾Ð´Ð¾Ð±Ð½Ð¾Ð³Ð¾ Ð¸Ð»Ð¸ Ð¸ÑÐµÑÐ°ÑÐ¸Ð²Ð½Ð¾Ð³Ð¾ Ð¾Ð±ÑÐµÐºÑÐ°. Ð¡Ð¼Ð¾ÑÑÐ¸ÑÐµ ÑÐ°ÐºÐ¶Ðµ Array.from().
Int32Array.of(): Ð¡Ð¾Ð·Ð´Ð°ÑÑ Ð½Ð¾Ð²ÑÐ¹ Int32Array with a variable number of arguments. See also Array.of().

Int32Array Ð¿ÑÐ¾ÑÐ¾ÑÐ¸Ð¿

All Int32Array objects inherit from %TypedArray%.prototype.

Ð¡Ð²Ð¾Ð¹ÑÑÐ²Ð°

Int32Array.prototype.constructor: Returns the function that created an instance's prototype. This is the Int32Array constructor by default.
Int32Array.prototype.buffer Ð¢Ð¾Ð»ÑÐºÐ¾ Ð´Ð»Ñ ÑÑÐµÐ½Ð¸Ñ: Returns the ArrayBuffer referenced by the Int32Array Fixed at construction time and thus read only.
Int32Array.prototype.byteLength Ð¢Ð¾Ð»ÑÐºÐ¾ Ð´Ð»Ñ ÑÑÐµÐ½Ð¸Ñ: Returns the length (in bytes) of the Int32Array from the start of its ArrayBuffer. Fixed at construction time and thus read only.
Int32Array.prototype.byteOffset Ð¢Ð¾Ð»ÑÐºÐ¾ Ð´Ð»Ñ ÑÑÐµÐ½Ð¸Ñ: Returns the offset (in bytes) of the Int32Array from the start of its ArrayBuffer. Fixed at construction time and thus read only.
Int32Array.prototype.length Ð¢Ð¾Ð»ÑÐºÐ¾ Ð´Ð»Ñ ÑÑÐµÐ½Ð¸Ñ: Returns the number of elements hold in the Int32Array. Fixed at construction time and thus read only.

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Int32Array.prototype.copyWithin(): Copies a sequence of array elements within the array. See also Array.prototype.copyWithin().
Int32Array.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().
Int32Array.prototype.every(): Tests whether all elements in the array pass the test provided by a function. See also Array.prototype.every().
Int32Array.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().
Int32Array.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().
Int32Array.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().
Int32Array.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().
Int32Array.prototype.forEach(): Calls a function for each element in the array. See also Array.prototype.forEach().
Int32Array.prototype.includes() ÐÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½Ð°Ñ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÑ: Determines whether a typed array includes a certain element, returning true or false as appropriate. See also Array.prototype.includes().
Int32Array.prototype.indexOf(): Returns the first (least) index of an element within the array equal to the specified value, or -1 if none is found. See also Array.prototype.indexOf().
Int32Array.prototype.join(): Joins all elements of an array into a string. See also Array.prototype.join().
Int32Array.prototype.keys(): Returns a new Array Iterator that contains the keys for each index in the array. See also Array.prototype.keys().
Int32Array.prototype.lastIndexOf(): Returns the last (greatest) index of an element within the array equal to the specified value, or -1 if none is found. See also Array.prototype.lastIndexOf().
Int32Array.prototype.map(): Creates a new array with the results of calling a provided function on every element in this array. See also Array.prototype.map().
Int32Array.prototype.reduce(): Apply a function against an accumulator and each value of the array (from left-to-right) as to reduce it to a single value. See also Array.prototype.reduce().
Int32Array.prototype.reduceRight(): Apply a function against an accumulator and each value of the array (from right-to-left) as to reduce it to a single value. See also Array.prototype.reduceRight().
Int32Array.prototype.reverse(): Reverses the order of the elements of an array â the first becomes the last, and the last becomes the first. See also Array.prototype.reverse().
Int32Array.prototype.set(): Stores multiple values in the typed array, reading input values from a specified array.
Int32Array.prototype.slice(): Extracts a section of an array and returns a new array. See also Array.prototype.slice().
Int32Array.prototype.some(): Returns true if at least one element in this array satisfies the provided testing function. See also Array.prototype.some().
Int32Array.prototype.sort(): Sorts the elements of an array in place and returns the array. See also Array.prototype.sort().
Int32Array.prototype.subarray(): Returns a new Int32Array from the given start and end element index.
Int32Array.prototype.values(): Returns a new Array Iterator object that contains the values for each index in the array. See also Array.prototype.values().
Int32Array.prototype.toLocaleString(): Returns a localized string representing the array and its elements. See also Array.prototype.toLocaleString().
Int32Array.prototype.toString(): Returns a string representing the array and its elements. See also Array.prototype.toString().
Int32Array.prototype[@@iterator](): Returns a new Array Iterator object that contains the values for each index in the array.

ÐÑÐ¸Ð¼ÐµÑÑ

// Ð¡ ÑÐºÐ°Ð·Ð°Ð½Ð¸ÐµÐ¼ ÑÐ°Ð·Ð¼ÐµÑÐ°
var int32 = new Int32Array(2);
int32[0] = 42;
console.log(int32[0]); // 42
console.log(int32.length); // 2
console.log(int32.BYTES_PER_ELEMENT); // 4

// ÐÐ· Ð¼Ð°ÑÑÐ¸Ð²Ð° (Array)
var arr = new Int32Array([21, 31]);
console.log(arr[1]); // 31

// ÐÐ· Ð´ÑÑÐ³Ð¾Ð³Ð¾ ÑÐ¸Ð¿Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð¼Ð°ÑÑÐ¸Ð²Ð° (TypedArray)
var x = new Int32Array([21, 31]);
var y = new Int32Array(x);
console.log(y[0]); // 21

// ÐÐ· ArrayBuffer
var buffer = new ArrayBuffer(16);
var z = new Int32Array(buffer, 0, 4);

// ÐÐ· Ð¸ÑÐµÑÐ¸ÑÑÐµÐ¼Ð¾Ð³Ð¾ Ð¾Ð±ÑÐµÐºÑÐ° (iterable)
var iterable = (function* () {
  yield* [1, 2, 3];
})();
var int32 = new Int32Array(iterable);
// Int32Array[1, 2, 3]

ÐÐ°ÑÐ¸Ð½Ð°Ñ Ñ ECMAScript 2015, ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¾ÑÑ Int32Array ÑÑÐµÐ±ÑÑÑ Ð¾Ð¿ÐµÑÐ°ÑÐ¾Ñ new. ÐÑÐ·Ð¾Ð² Int32Array ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¾ÑÐ° ÐºÐ°Ðº ÑÑÐ½ÐºÑÐ¸Ñ Ð±ÐµÐ· Ð¾Ð¿ÐµÑÐ°ÑÐ¾ÑÐ° new, Ð²ÑÐ·Ð¾Ð²ÐµÑ Ð¾ÑÐ¸Ð±ÐºÑ TypeError.

var dv = Int32Array([1, 2, 3]);
// TypeError: calling a builtin Int32Array constructor
// without new is forbidden

var dv = new Int32Array([1, 2, 3]);

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