Encoding
This document describes the Encoding library available in the JavaScript environment for app services.
Table of content
The Encoding object provides functions for converting between different data types and encodings.
binToHex
Converts from binary data contained in an Uint8Array to a hex string.
Parameters
| Uint8Array data | An Uint8Array containing the data to convert. |
Return value
| sting | The hex string representation of data. |
var bin = new Uint8Array([0x00, 0x01, 0x02]);
var hexstring = Encoding.binToHex(bin);
// hexstring contains "000102"
hexToBin
Converts a hex string to an Uint8Array containing binary data.
Parameters
| string hexstring | A hexadecimal string. |
Return value
| Uint8Array | The binary representation of hexstring. |
Remarks
null is converted to an Uint8Array of length 0.
var hexstring = "000102";
var bin = Encoding.hexToBin(hexstring);
// bin is equivalent to new Uint8Array([0x00, 0x01, 0x02])
binToBase64
Converts from binary data contained in an Uint8Array to a base64-encoded string.
Parameters
| Uint8Array data | An Uint8Array containing the data to convert. |
Return value
| sting | The base64 representation of data. |
var bin = new Uint8Array([0x00, 0x01, 0x02, 0x03]);
var base64 = Encoding.binToBase64(bin);
// base64 contains "AAECAw=="
base64ToBin
Converts a base64 string to an Uint8Array containing binary data.
Parameters
| string base64 | A base64 string. |
Return value
| Uint8Array | The binary representation. |
Remarks
null is converted to an Uint8Array of length 0.
var base64 = "AAECAw==";
var bin = Encoding.base64ToBin(base64);
// bin is equivalent to new Uint8Array([0x00, 0x01, 0x02, 0x03])
binToString
Converts a Uint8Array to a string.
Parameters
| Uint8Array data | An Uint8Array containing binary string data. |
Return value
Remarks
null is converted to an empty string.
var bin = new Uint8Array([0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65]);
var string = Encoding.binToString(bin);
// hexstring contains "example"
stringToBin
Converts a string to a Uint8Array.
Parameters
| string data | A string to convert. |
Return value
| Uint8Array | The binary representation of data. |
Remarks
null is converted to an Uint8Array of length 0.
var string = "example";
var bin = Encoding.stringToBin(string);
// bin is equivalent to new Uint8Array([0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65])