A utility to convert JS objects to Form Encoded strings

converter.js

var jsToFormEncoded = function(obj) {
  var fullSubName, i, innerObj, name, query, subName, subValue, value;
  query = "";
  name = void 0;
  value = void 0;
  fullSubName = void 0;
  subValue = void 0;
  innerObj = void 0;
  i = void 0;
  for (name in obj) {
    value = obj[name];
    if (value instanceof Array) {
      i = 0;
      while (i < value.length) {
        subValue = value[i];
        fullSubName = name + "[" + i + "]";
        innerObj = {};
        innerObj[fullSubName] = subValue;
        query += param(innerObj) + "&";
        ++i;
      }
    } else if (value instanceof Object) {
      for (subName in value) {
        subValue = value[subName];
        fullSubName = name + "[" + subName + "]";
        innerObj = {};
        innerObj[fullSubName] = subValue;
        query += param(innerObj) + "&";
      }
    } else {
      if (value !== undefined && value !== null) {
        query += encodeURIComponent(name) + "=" + encodeURIComponent(value) + "&";
      }
    }
  }
  if (query.length) {
    return query.substr(0, query.length - 1);
  } else {
    return query;
  }
};