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JavaScript Typed Array Methods

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Typed Array Types

Revised July 2025

Name Range Type
Int8Array -128 / 127 Signed integer (1 byte)
Uint8Array 0 / 255 Unsigned integer (1 byte)
Uint8ClampedArray 0 / 255 Unsigned integer (1 byte)
Int16Array -32768 / 32767 Signed short (2 bytes)
Uint16Array 0 / 65535 Unsigned short (2 bytes)
Int32Array -231 / 231 - 1 Signed long (4 bytes)
Uint32Array 0 / 232 - 1 Unsigned long (4 bytes)
BigInt64Array -263 / 263 - 1 Signed big integer (8 bytes)
BigUint64Array 0 / 264 - 1 Unsigned big integer (8 bytes)
   
Float16Array -65504 / 65504 floating point (2 bytes)
Float32Array -3.4e38 / 3.4e38 floating point (4 bytes)
Float64Array -1.8e308 / 1.8e308 floating point (8 bytes)

Browser Support

Typed Arrays is an ES6 feature (JavaScript 2015).

ES6 is fully supported in all modern browsers since June 2017:

Chrome 51 Edge 15 Firefox 54 Safari 10 Opera 38
May 2016 Apr 2017 Jun 2017 Sep 2016 Jun 2016

Typed Arrays is not supported in Internet Explorer.


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