// The data needs to be an array of bytes, so values over 255 won't work in this implementation.
data = new Array(4, 5);

// How many bytes per HEX record. Usually 16 or 32 but can take arbitrary numbers.
byteCount = 16;

// Your record's start address (you might not even need this so 0 is a good option if you don't know what this is)
startAddress = 0;

// Wether to prepend all records with ':' like in the official Intel HEX specs. 
useRecordHeader = true;

intelHEX = new JVIntelHEX(data, byteCount, startAddress, useRecordHeader);

// Crunch the data
intelHEX.createRecords();

console.debug('HEX file', intelHEX.getHEXFile());
console.debug('HEX as byte array', intelHEX.getHEXAsByteArray());
console.debug('HEX as binary string', intelHEX.getHEXAsBinaryString());