Int16Array

The Int16Array typed array represents an array of twos-complement 16-bit signed integers in the platform byte order. If control over byte order is needed, use DataView instead. The contents are initialized to 0 . Once established, you can reference elements in the array using the object's methods, or using standard array index syntax(that is, using bracket notation).

语法

new Int16Array(length);
new Int16Array(typedArray);
new Int16Array(object);
new Int16Array(buffer [, byteOffset [, length]]);

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

属性

Int16Array.BYTES_PER_ELEMENT: Returns a number value of the element size. 2 in the case of an Int16Array .
Int16Array.length: Static length property whose value is 3. For the actual length(number of elements), see Int16Array.prototype.length .
Int16Array.name: Returns the string value of the constructor name. In the case of the Int16Array type:"Int16Array".
Int16Array.prototype: Prototype for the TypedArray objects.

方法

Int16Array.from(): Creates a new Int16Array from an array-like or iterable object. See also Array.from() .
Int16Array.of(): Creates a new Int16Array with a variable number of arguments. See also Array.of() .

`Int16Array` prototype

All Int16Array objects inherit from %TypedArray%.prototype .

Properties

Int16Array.prototype.constructor: Returns the function that created an instance's prototype. This is the Int16Array constructor by default.
Int16Array.prototype.buffer 只读: Returns the ArrayBuffer referenced by the Int16Array Fixed at construction time and thus read only .
Int16Array.prototype.byteLength 只读: Returns the length(in bytes)of the Int16Array from the start of its ArrayBuffer . Fixed at construction time and thus read only.
Int16Array.prototype.byteOffset 只读: Returns the offset(in bytes)of the Int16Array from the start of its ArrayBuffer . Fixed at construction time and thus read only.
Int16Array.prototype.length 只读: Returns the number of elements hold in the Int16Array . Fixed at construction time and thus read only.

Methods

Int16Array.prototype.copyWithin(): Copies a sequence of array elements within the array. See also Array.prototype.copyWithin() .
Int16Array.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() .
Int16Array.prototype.every(): Tests whether all elements in the array pass the test provided by a function. See also Array.prototype.every() .
Int16Array.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() .
Int16Array.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() .
Int16Array.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() .
Int16Array.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() .
Int16Array.prototype.forEach(): Calls a function for each element in the array. See also Array.prototype.forEach() .
Int16Array.prototype.includes(): Determines whether a typed array includes a certain element, returning true or false as appropriate. See also Array.prototype.includes() .
Int16Array.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() .
Int16Array.prototype.join(): Joins all elements of an array into a string. See also Array.prototype.join() .
Int16Array.prototype.keys(): Returns a new Array Iterator that contains the keys for each index in the array. See also Array.prototype.keys() .
Int16Array.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() .
Int16Array.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() .
Int16Array.prototype.move() 未实现: Former non-standard version of Int16Array.prototype.copyWithin() .
Int16Array.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() .
Int16Array.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() .
Int16Array.prototype.reverse(): Reverses the order of the elements of an array — the first becomes the last, and the last becomes the first. See also Array.prototype.reverse() .
Int16Array.prototype.set(): Stores multiple values in the typed array, reading input values from a specified array.
Int16Array.prototype.slice(): Extracts a section of an array and returns a new array. See also Array.prototype.slice() .
Int16Array.prototype.some(): Returns true if at least one element in this array satisfies the provided testing function. See also Array.prototype.some() .
Int16Array.prototype.sort(): Sorts the elements of an array in place and returns the array. See also Array.prototype.sort() .
Int16Array.prototype.subarray(): Returns a new Int16Array from the given start and end element index.
Int16Array.prototype.values(): Returns a new Array Iterator object that contains the values for each index in the array. See also Array.prototype.values() .
Int16Array.prototype.toLocaleString(): Returns a localized string representing the array and its elements. See also Array.prototype.toLocaleString() .
Int16Array.prototype.toString(): Returns a string representing the array and its elements. See also Array.prototype.toString() .
Int16Array.prototype[@@iterator](): Returns a new Array Iterator object that contains the values for each index in the array.

Examples

// From a length
var int16 = new Int16Array(2);
int16[0] = 42;
console.log(int16[0]); // 42
console.log(int16.length); // 2
console.log(int16.BYTES_PER_ELEMENT); // 2

// From an array
var arr = new Int16Array([21,31]);
console.log(arr[1]); // 31

// From another TypedArray
var x = new Int16Array([21, 31]);
var y = new Int16Array(x);
console.log(y[0]); // 21

// From an ArrayBuffer
var buffer = new ArrayBuffer(8);
var z = new Int16Array(buffer, 0, 4);

返回JavaScript导航

Int16Array

语法

属性

方法

Int16Array prototype

Properties

Methods

Examples

`Int16Array` prototype