js序列化json对象

SerializeJsonToStr : function( oJson )
{
    if( oJson == null )
        return "null";
    if( typeof(oJson) == typeof(0) )
        return oJson.toString();
    if( typeof(oJson) == typeof('') ||
        oJson instanceof String )
    {
        oJson = oJson.toString();
        oJson = oJson.replace( //r/n/, '//r//n');
        oJson = oJson.replace( //n/, '//n');
        oJson = oJson.replace( //"/, '//"');
        return '"' + oJson + '"';
    }
    if( oJson instanceof Array )
    {
        var strRet = "[";
        for( var i = 0; i < oJson.length; i++)
        {
            if( strRet.length > 1 )
                strRet += ",";
            strRet += ExternalInterface.SerializeJsonToStr(oJson[i]);
        }
        strRet += "]";
        return strRet;
    }
    if( typeof(oJson) == typeof({}) )
    {
        var strRet = "{";
        for( var p in oJson )
        {
            if( strRet.length > 1 )
                strRet += ",";
            strRet += p.toString() + ':' + ExternalInterface.SerializeJsonToStr(oJson[p]);
        }
        strRet += "}";
        return strRet;
    }
}