Camel case strings with dashes in them. E.g. 'camel-case' -> 'camelCase'

camel-case.js

// Camel case strings with dashes in them. E.g. 'camel-case' -> 'camelCase'
function camelCase(s) {
  function upperCaseFirst(s) {
    return s[0].toUpperCase() + s.slice(1);
  }

  var separator = '-';
  
  // Return early if no additional camel casing is needed
  if (s.indexOf(separator) === -1) {
    return s;
  }
  
  var parts = s.split(separator);
  return parts.map(function(v, i) {
    if (i > 0) {
      return upperCaseFirst(v);
    } else {
      return v;
    }
  }).join('');
}