The TypedArray.of() method creates a new typed array from a variable number of arguments. This method is nearly the same as Array.of().


TypedArray.of(element0[, element1[, ...[, elementN]]])

Where TypedArray is one of:


Elements of which to create the typed array.

Return value

A new TypedArray instance.


Some subtle distinctions between Array.of() and TypedArray.of():

  • If the this value passed to TypedArray.of() is not a constructor, TypedArray.of() will throw a TypeError, where Array.of() defaults to creating a new Array.
  • TypedArray.of() uses [[Put]] where Array.of() uses [[DefineProperty]]. Hence, when working with Proxy objects, it calls handler.set to create new elements rather than handler.defineProperty().


Using of()

Uint8Array.of(1);            // Uint8Array [ 1 ]
Int8Array.of('1', '2', '3'); // Int8Array [ 1, 2, 3 ]
Float32Array.of(1, 2, 3);    // Float32Array [ 1, 2, 3 ]
Int16Array.of(undefined);    // Int16Array [ 0 ]


ECMAScript (ECMA-262)
The definition of '%TypedArray%.of' in that specification.

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
ofChrome Full support 45Edge Full support 14Firefox Full support 38IE No support NoOpera No support NoSafari Full support 9.1WebView Android No support NoChrome Android No support NoFirefox Android Full support 38Opera Android No support NoSafari iOS Full support 9.3Samsung Internet Android No support Nonodejs Full support 4.0.0


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See also