(Node.js) Append Big-Endian or Little-Endian Integers

Demonstrates how to append integers in big-endian or little-endian byte order to a BinData.

Note: This example requires Chilkat v9.5.0.77 or greater.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

    var bd = new chilkat.BinData();

    // The hex value of decimal 123456789 is 0x075BCD15
    var x = 123456789;

    // Appending little-endian causes bytes to be
    // appended in the order 0x15, 0xCD, 0x5B, 0x07
    var littleEndian = true;
    var success = bd.AppendInt4(x,littleEndian);

    console.log(bd.GetEncoded("hex"));
    // Output is: 15CD5B07

    // Now append the same integer in big-endian byte order.
    // Appending bit-endian causes bytes to be
    // appended in the order 0x07, 0x5B, 0xCD, 0x15
    littleEndian = false;
    bd.AppendInt4(x,littleEndian);

    console.log(bd.GetEncoded("hex"));
    // bd now contains: 15CD5B07075BCD15

    // -------------------------------------------
    // Now do the same thing with 16-bit integers
    bd.Clear();

    // 1234 decimal = 0x04D2 hex.
    x = 1234;

    littleEndian = true;
    bd.AppendInt2(x,littleEndian);

    console.log(bd.GetEncoded("hex"));
    // Output is: D204

    littleEndian = false;
    bd.AppendInt2(x,littleEndian);

    console.log(bd.GetEncoded("hex"));
    // Output is now: D20404D2

}

chilkatExample();