Uint8Array.prototype.toHex()

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

The toHex() method of Uint8Array instances returns a hex-encoded string based on the data in this Uint8Array object.

This method creates strings from a byte array. To convert individual numbers into hex, use the Number.prototype.toString() method with radix set to 16 instead.

Syntax

js
toHex()

Parameters

None.

Return value

A hex-encoded string representing the data in the Uint8Array.

Examples

Encoding binary data

This example encodes data from a Uint8Array into a hex string.

js
const uint8Array = new Uint8Array([202, 254, 208, 13]);
console.log(uint8Array.toHex()); // "cafed00d"

const data = new Uint8Array([255, 0, 0, 0, 255, 0, 0, 0, 255]);
for (let i = 0; i < data.length; i += 3) {
  console.log(data.slice(i, i + 3).toHex());
}
// "ff0000"
// "00ff00"
// "00ff00"

Specifications

Specification
Uint8Array to/from base64
# sec-uint8array.prototype.tohex

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
toHex

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
See implementation notes.

See also