(JavaScript) Demonstrate Binary Data Encoding Methods

Demonstrates binary data encoding methods.

Note: This example requires Chilkat v9.5.0.64 or later.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

var binData = new CkBinData();

// Append 10 bytes: 00, 01, 02, 03, 04, 05, 06, 07, 08, 09
binData.AppendEncoded("00010203040506070809","hex");

// Show that binData contains 10 bytes.
console.log("num bytes = " + binData.NumBytes);

// Get as base64
console.log("base64: " + binData.GetEncoded("base64"));

// Get a chunk of the binary data.
// The 1st byte is at index 0.
// The output should be "02030405"
var offset = 2;
var numBytes = 4;
console.log("chunk: " + binData.GetEncodedChunk(offset,numBytes,"hex"));

// Copy the bytes to a StringBuilder using the base64url encoding
var sb = new CkStringBuilder();
binData.GetEncodedSb("base64url",sb);
console.log("base64url: " + sb.GetAsString());

// Remove a chunk from the binary data
offset = 2;
numBytes = 4;
binData.RemoveChunk(offset,numBytes);
// The bytes remaining are 00,01,06,07,08,and 09
console.log("after removing chunk: " + binData.GetEncoded("hex"));