Array Uniq in coffee script JS Bin// source http://jsbin.com/xiwimo

<!DOCTYPE html>
<html>
<head>
<script src="https://cdn.jsdelivr.net/gh/lodash/lodash/3.0.1/lodash.min.js"></script>
  <meta charset="utf-8">
  <title>JS Bin</title>
</head>
<body>

nodeA = {
  className: 'txt-a txt-b bold center txt-a'
};

cls = 'add-cls';

curCls = nodeA.className.split(' ');

curCls.push(cls);

nodeA.className = _.uniq(curCls).join(' ');

console.log(nodeA);

nodeB = {
  className: 'txt-a txt-b bold center txt-a'
};

cls = 'add-cls';

curCls = nodeB.className.split(' ');

curCls.push(cls);

res = {};

for (i = _i = 0, _ref = curCls.length; 0 <= _ref ? _i < _ref : _i > _ref; i = 0 <= _ref ? ++_i : --_i) {
  res[curCls[i]] = curCls[i];
}

curCls = (function() {
  var _results;
  _results = [];
  for (key in res) {
    value = res[key];
    _results.push(value);
  }
  return _results;
})();

nodeB.className = curCls.join(' ');

console.log(nodeA, nodeB, nodeA.className === nodeB.className);

</script>

console.log nodeA

nodeB =
  className: 'txt-a txt-b bold center txt-a'
  
cls = 'add-cls'

curCls = nodeB.className.split(' ')
curCls.push(cls)
res = {}
res[curCls[i]] = curCls[i] for i in [0...curCls.length]

curCls = for key, value of res then value

nodeB.className = curCls.join(' ')

console.log nodeA, nodeB , nodeA.className is nodeB.className
</script></body>
</html>

Updated missing url https://rawgit.com/lodash/lodash/3.0.1/lodash.min.js to https://cdn.jsdelivr.net/gh/lodash/lodash/3.0.1/lodash.min.js

https://rawgit.com/lodash/lodash/3.0.1/lodash.min.js