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Uint8ClampedArray - JavaScript | MDN

Uint8ClampedArray

Baseline Widely available

Syntax

new Uint8ClampedArray(length);
new Uint8ClampedArray(typedArray);
new Uint8ClampedArray(object);
new Uint8ClampedArray(buffer [, byteOffset [, length]]);

Properties

Uint8ClampedArray.BYTES_PER_ELEMENT: ÐÐ¾Ð·Ð²ÑÐ°ÑÐ°ÐµÑ ÑÐ°Ð·Ð¼ÐµÑ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ° Ð² Ð±Ð°Ð¹ÑÐ°Ñ. ÐÐ»Ñ Uint8ClampedArray Ð¾Ð½Ð¾ ÑÐ°Ð²Ð½Ð¾ 1.
Uint8ClampedArray.length: Static length property whose value is 3. For the actual length (number of elements), see Uint8ClampedArray.prototype.length.
Uint8ClampedArray.name: Returns the string value of the constructor name. In the case of the Uint8ClampedArray type: "Uint8ClampedArray".
Uint8ClampedArray.prototype: Prototype for the TypedArray objects.

Methods

Uint8ClampedArray.from(): Creates a new Uint8ClampedArray from an array-like or iterable object. See also Array.from().
Uint8ClampedArray.of(): Creates a new Uint8ClampedArray with a variable number of arguments. See also Array.of().

Uint8ClampedArray prototype

All Uint8ClampedArray objects inherit from %TypedArray%.prototype.

Properties

Uint8ClampedArray.prototype.constructor: Returns the function that created an instance's prototype. This is the Uint8ClampedArray constructor by default.
Uint8ClampedArray.prototype.buffer Ð¢Ð¾Ð»ÑÐºÐ¾ Ð´Ð»Ñ ÑÑÐµÐ½Ð¸Ñ: Returns the ArrayBuffer referenced by the Uint8ClampedArray Fixed at construction time and thus read only.
Uint8ClampedArray.prototype.byteLength Ð¢Ð¾Ð»ÑÐºÐ¾ Ð´Ð»Ñ ÑÑÐµÐ½Ð¸Ñ: Returns the length (in bytes) of the Uint8ClampedArray from the start of its ArrayBuffer. Fixed at construction time and thus read only.
Uint8ClampedArray.prototype.byteOffset Ð¢Ð¾Ð»ÑÐºÐ¾ Ð´Ð»Ñ ÑÑÐµÐ½Ð¸Ñ: Returns the offset (in bytes) of the Uint8ClampedArray from the start of its ArrayBuffer. Fixed at construction time and thus read only.
Uint8ClampedArray.prototype.length Ð¢Ð¾Ð»ÑÐºÐ¾ Ð´Ð»Ñ ÑÑÐµÐ½Ð¸Ñ: Returns the number of elements hold in the UintClamped8Array. Fixed at construction time and thus read only.

Methods

Uint8ClampedArray.prototype.copyWithin(): Copies a sequence of array elements within the array. See also Array.prototype.copyWithin().
Uint8ClampedArray.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().
Uint8ClampedArray.prototype.every(): Tests whether all elements in the array pass the test provided by a function. See also Array.prototype.every().
Uint8ClampedArray.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().
Uint8ClampedArray.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().
Uint8ClampedArray.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().
Uint8ClampedArray.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().
Uint8ClampedArray.prototype.forEach(): Calls a function for each element in the array. See also Array.prototype.forEach().
Uint8ClampedArray.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().
Uint8ClampedArray.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().
Uint8ClampedArray.prototype.join(): Joins all elements of an array into a string. See also Array.prototype.join().
Uint8ClampedArray.prototype.keys(): Returns a new Array Iterator that contains the keys for each index in the array. See also Array.prototype.keys().
Uint8ClampedArray.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().
Uint8ClampedArray.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().
Uint8ClampedArray.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().
Uint8ClampedArray.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().
Uint8ClampedArray.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().
Uint8ClampedArray.prototype.set(): Stores multiple values in the typed array, reading input values from a specified array.
Uint8ClampedArray.prototype.slice(): Extracts a section of an array and returns a new array. See also Array.prototype.slice().
Uint8ClampedArray.prototype.some(): Returns true if at least one element in this array satisfies the provided testing function. See also Array.prototype.some().
Uint8ClampedArray.prototype.sort(): Sorts the elements of an array in place and returns the array. See also Array.prototype.sort().
Uint8ClampedArray.prototype.subarray(): Returns a new Uint8ClampedArray from the given start and end element index.
Uint8ClampedArray.prototype.values(): Returns a new Array Iterator object that contains the values for each index in the array. See also Array.prototype.values().
Uint8ClampedArray.prototype.toLocaleString(): Returns a localized string representing the array and its elements. See also Array.prototype.toLocaleString().
Uint8ClampedArray.prototype.toString(): Returns a string representing the array and its elements. See also Array.prototype.toString().
Uint8ClampedArray.prototype[@@iterator](): Returns a new Array Iterator object that contains the values for each index in the array.

Examples

// From a length
var uintc8 = new Uint8ClampedArray(2);
uintc8[0] = 42;
uintc8[1] = 1337;
console.log(uintc8[0]); // 42
console.log(uintc8[1]); // 255 (clamped)
console.log(uintc8.length); // 2
console.log(uintc8.BYTES_PER_ELEMENT); // 1

// From an array
var arr = new Uint8ClampedArray([21, 31]);
console.log(arr[1]); // 31

// From another TypedArray
var x = new Uint8ClampedArray([21, 31]);
var y = new Uint8ClampedArray(x);
console.log(y[0]); // 21

// From an ArrayBuffer
var buffer = new ArrayBuffer(8);
var z = new Uint8ClampedArray(buffer, 1, 4);

Starting with ECMAScript 2015 (ES6), Uint8ClampedArray constructors require to be constructed with a new operator. Calling a Uint8ClampedArray constructor as a function without new, will throw a TypeError from now on.

var dv = Uint8ClampedArray([1, 2, 3]);
// TypeError: calling a builtin Uint8ClampedArray constructor
// without new is forbidden

var dv = new Uint8ClampedArray([1, 2, 3]);

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