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"
// "0000ff"

Specifications

Browser compatibility

See also

• Polyfill of Uint8Array.prototype.toHex in core-js
• es-shims polyfill of Uint8Array.prototype.toHex
• Uint8Array
• Uint8Array.fromHex()
• Uint8Array.prototype.setFromHex()
• Number.prototype.toString()