Run results for: bytesToHex

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:49.0) Gecko/20100101 Firefox/49.0

Browser: Firefox 49

Operating system: Mac OS X 10.11

Device Platform: Other

Date tested: 8 years ago

Test name	Executions per second
bytes_to_hex	88.5 Ops/sec
bytesToHex	69.1 Ops/sec
toHexString	58.0 Ops/sec

Script Preparation code:

var arr = [];

var count = 100000;

for(var i = 0; i<count; i++) {
  arr.push(i%255);
}

function bytes_to_hex ( arr ) {
    var str = '';
    for ( var i = 0; i < arr.length; i++ ) {
        var h = ( arr[i] & 0xff ).toString(16);
        if ( h.length < 2 ) str += '0';
        str += h;
    }
    return str;
}

function bytesToHex(bytes) {
	for (var hex = [], i = 0; i < bytes.length; i++) {
		hex.push((bytes[i] >>> 4).toString(16));
		hex.push((bytes[i] & 0xF).toString(16));
	}
	return hex.join("");
}

function toHexString(byteArray) {
  return byteArray.map(function(byte) {
    return ('0' + (byte & 0xFF).toString(16)).slice(-2);
  }).join('')
}

Tests:

bytes_to_hex
bytes_to_hex(arr);
bytesToHex
bytesToHex(arr);
toHexString
toHexString(arr);