function parseParam(param, key) {  var paramStr = "";  if (param instanceof String || param instanceof Number || param instanceof Boolean  ) {    paramStr += "&" + key + "=" + encodeURIComponent(param);  }  else {    $.each(param, function (i, p) {      if (p == null || p == undefined)        return true;      var k = key == null ? i : key + (param instanceof Array ? "[" + i + "]" : "." + i);      paramStr += '&' + parseParam(this, k);    });  }  return paramStr.substr(1);};

//調用：var obj={name:'tom','class':{className:'class1'},classMates:[{name:'lily'}]};parseParam(obj);//結果："name=tom&class.className=class1&classMates[0].name=lily"parseParam(obj,'stu');//結果："stu.name=tom&stu.class.className=class1&stu.classMates[0].name=lily"