Untitled

Convert array of byte values to base64 encoded string and break long lines, Javascript (code golf)
function encode(data)
{
  var str = "";
  for (var i = 0; i < data.length; i++)
    str += String.fromCharCode(data[i]);

  return btoa(str).split(/(.{75})/).join("n").replace(/n+/g, "n").trim();
}

function encode(data)
{
    var str = String.fromCharCode.apply(null,d);
    return btoa(str).replace(/.{76}(?=.)/g,'$&n');
}

function e(d){return btoa(String.fromCharCode.apply(d,d)).replace(/.{76}(?=.)/g,'$&n')}

function e(d){return btoa(String.fromCharCode.apply(d,d)).replace(/.{1,76}/g,'$&n')}

function encode(data)
{
  var output = "";
  var str = "";
  for (var i = 0; i < data.length; i++)
  {
    str += String.fromCharCode(data[i]);
    // the "&& i != data.length - 1" clause
    // keeps the extra n off the end of the output
    // when the last line is exactly 76 characters
    if (str.length == 57 && i != data.length - 1)
    {
      output += btoa(str) + "n";
      str = "";
    }
  }
  return output + btoa(str);
}

function encode(data)
{
  var output = [];
  var str = "";
  for (var i = 0; i < data.length; i++)
  {
    str += String.fromCharCode(data[i]);
    if (str.length == 57)
    {
      output[output.length] = btoa(str);
      str = "";
    }
  }
  if (str != "")
    output[output.length] = btoa(str);
  return output.join("n");
}

function encode(data)
{
  var str = data.map(function (d) { return String.fromCharCode(d) }).join("");
  return btoa(str).replace(/.{76}(?=.)/g,'$&n');
}

function e(b){return btoa(b.map(function(d){return
String.fromCharCode(d)}).join("")).replace(/.{76}(?=.)/g,'$&n')}

function encode(data)
{
    var str = data.reduce(function(a,b){ return a+String.fromCharCode(b) },'');
    return btoa(str).replace(/.{76}(?=.)/g,'$&n');
}