簡單的js url encode & decode

urlib.js

function serialize(obj) {
  var str = [];
  for(var p in obj)
     str.push(encodeURIComponent(p) + "=" + encodeURIComponent(obj[p]));
  return str.join("&");
}

function parse_qs(qs){
    qs.replace(/^.*\?|#.*$/g, '');
    
    var result = {};
    var data; 
    data = qs.split(/\?|&/);
    for(index in data)
    {
      info = data[index].match(/^([^=]+)=([^=]+)$/);
      if(!info){
         continue;
      }
        result[info[1]] = info[1];
    }
    return result
}

function urljoin(target){
    //保留path
    clean_url = window.location.toString().replace(/(^\s+|\s+$)/g, '')  //除空白
                                                 .replace(/[#?].*$/, '')       //清茅點&參數
                                                 .replace(/\/[^/]*\.[^/]*$/, '') + "/";  //清檔案
    
    domain = clean_url.match(/^https?:\/\/[^/]*/)[0]
    
    protocol = domain.replace(/^(https?:)\/\/.*/, "$1");
    
    // "http" 開頭 直接取代
    if(target.match(/^https:\/\//)){
        return target;
    };
    
    // "//" 開頭 保留protocol
    if(target.match(/^\/\//)){
        return protocol + target;   
    };
    
    // "/" 開頭 保留domain
    if(target.match(/^\//)){
        return domain + target;   
    };
 
    // "." 開頭 保留path
    if(target.match(/^./)){
        return clean_url + target;
    };
}
urlstr = serialize({test: 12, foo: "bar"});
alert(urlstr);
result = parse_qs(urlstr)
alert(JSON.stringify(result))