obj2url

obj2url.js

(function(exports, undefined){
  /**
   * obj2url() takes an object as argument and generates
   * a querystring. pretty much like $.param() but without $
   *
   * @param Object json-object
   * @param String current querystring-part
   * @return String encoded querystring
   */
  var obj2url = exports.obj2url = function(obj, temp) {
    var uristrings = [],
        add = function(nextObj, i){
          var nextTemp = temp
                ? (/\[\]$/.test(temp)) // prevent double-encoding
                  ? temp
                  : temp+'['+i+']'
                : i;
          uristrings.push(typeof nextObj === 'object'
            ? obj2url(nextObj, nextTemp)
            : (Object.prototype.toString.call(nextObj) === '[object Function]')
              ? encodeURIComponent(nextTemp) + '=' + encodeURIComponent(nextObj())
              : encodeURIComponent(nextTemp) + '=' + encodeURIComponent(nextObj));
        };
    if (Object.prototype.toString.call(obj) === '[object Array]')
      for (var i = 0, len = obj.length; i < len; ++i) add(obj[i], i);
    else if ((obj !== undefined) && (obj !== null) && (typeof obj === "object"))
      for (var i in obj) add(obj[i], i);
    else
      uristrings.push(encodeURIComponent(temp) + '=' + encodeURIComponent(obj));
    return uristrings.join('&').replace(/%20/g, '+');
  };
})((function() {
  if (typeof exports === 'undefined') {
    return window;
  } else {
    return exports;
  }
})());

obj2urlFaster.js

(function(exports, undefined){
  /**
   * this is slightly faster than the first obj2url()
   * running the function 10000 times with:
   * {a:'b',c:'d',e:['f',{g:'h',i:['j',{k:'l',m:'n'}],o:undefined,p:true,q:false}]}
   * this takes ~700ms, the first obj2url takes ~1000ms
   *
   * @param Object json-object
   * @param String current querystring-part
   * @return String encoded querystring
   */
  var obj2url = exports.obj2url = function(obj, temp) {
    var uristrings = []; 
    if (Object.prototype.toString.call(obj) === '[object Array]') { 
      for (var i = 0, len = obj.length; i<len; ++i) {
        var nextObj = obj[i],
            nextTemp = temp 
              ? (/\[\]$/.test(temp)) // prevent double-encoding
                ? temp
                : temp+'['+i+']'
              : i;
        uristrings.push(typeof nextObj === 'object' 
          ? obj2url(nextObj, nextTemp)
          : (Object.prototype.toString.call(nextObj) === '[object Function]')
            ? encodeURIComponent(nextTemp) + '=' + encodeURIComponent(nextObj())
            : encodeURIComponent(nextTemp) + '=' + encodeURIComponent(nextObj));
      }
    } else if ((obj !== undefined) && (obj !== null) && (typeof obj === "object")) {                                                     
      for (var i in obj) {
        var nextObj = obj[i],
            nextTemp = temp 
              ? (/\[\]$/.test(temp)) // prevent double-encoding
                ? temp
                : temp+'['+i+']'
              : i;
        uristrings.push(typeof nextObj === 'object' 
          ? obj2url(nextObj, nextTemp)
          : (Object.prototype.toString.call(nextObj) === '[object Function]')
            ? encodeURIComponent(nextTemp) + '=' + encodeURIComponent(nextObj())
            : encodeURIComponent(nextTemp) + '=' + encodeURIComponent(nextObj));
      }
    } else {
      uristrings.push(encodeURIComponent(temp)+'='+encodeURIComponent(obj));
    }                                                                       
    return uristrings.join('&').replace(/%20/g, "+");
  };
})((function() {
  if (typeof exports === 'undefined') {
    return window;
  } else {
    return exports;
  }
})());