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

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.

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

	Desktop					Mobile						Server
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet	WebView Android	Deno	Node.js
`toHex`	No	No	133	No	18.2	No	133	No	18.2	No	No	No	No