Javascript obfuscation

Ivan Porto Carrero — Sun, 02 Jul 2006 00:23:00 GMT

I've been getting much better along with The asp.net 2.0 atlas framework lately. Almost up to the point that it takes me almost the same time to create page in asp.net than it does me to create a page in The asp.net 2.0 atlas framework. Notice the word almost :) And that's optimism talking

Anyway it does take a wee while longer to create an The asp.net 2.0 atlas framework page than it would to create an asp.net page. But the result is about 10x as usable and than a normal page.

That being said. All that The asp.net 2.0 atlas framework goodnes comes at a cost : A lot of javascript being pushed down to the browser. When I was in wellington on wednesday there was somebody talking about The asp.net 2.0 atlas framework in the user group. Seen as I will go talk to the regional groups I was quite keen what Tatham had to say on the subject.

It was interesting but at a certain point he talked about the "obfuscated" javascript files. Those are just packed. That made me think that I also want to have packed javascript that is slightly less readable. I remember I have some open source library that I downloaded a year or so ago.

Well the guy has a nice library that you can download here :

http://dean.edwards.name/packer/

It's nice but his HttpHandler doesn't work for me. But there's a simple work-around. Make your own handler that reads the javascript file and uses his Pack function.

If somebody is interested in the code just drop me an email and i'll send it to you.

Make ATLAS support the Guid in javascript

Ivan Porto Carrero — Sun, 25 Jun 2006 16:31:00 GMT

I use guids as PK in my databases.

I like guids :) But The asp.net 2.0 atlas framework shows them as Object and that gives me some trouble using them in my The asp.net 2.0 atlas framework pages.

But to implement your own converter is not so difficult you just inherit from the JavaScriptConverter and override those methods.

And afterwards you have to register it in the converters section of the web.config

The web.config

   21 <microsoft.web>
   22         <converters>
   23             <add type="Microsoft.Web.Script.Serialization.Converters.DataSetConverter"/>
   24             <add type="Microsoft.Web.Script.Serialization.Converters.DataRowConverter"/>
   25             <add type="Microsoft.Web.Script.Serialization.Converters.DataTableConverter"/>
   26             <add type="Flanders.Library.AtlasControls.GuidConverter" />
   27         converters>
 

The Converter Class:

    1 using System;
    2 using Microsoft.Web.Script.Serialization;
    3 
    4 namespace Flanders.Library.AtlasControls
    5 {
    6     public class GuidConverter : JavaScriptConverter
    7     {
    8         public override string Serialize(object o)
    9         {
   10             Guid guid = Guid.Empty;
   11             if(o is Guid)
   12                 guid = (Guid)o;
   13             return "'"+guid.ToString()+"'";
   14         }
   15         protected override string GetClientTypeName(Type serverType)
   16         {
   17             return "Guid";
   18         }
   19         public override object Deserialize(string s, Type t)
   20         {
   21             throw new NotSupportedException();
   22         }
   23         protected override Type[] SupportedTypes
   24         {
   25             get
   26             {
   27                 return new Type[] { typeof(System.Guid) };
   28             }
   29         }
   30     }
   31 }
 
The type in javascript :

Guid = function(){
   this._typeName = 'Guid';
}
 

.NET 2.0

Javascript obfuscation

Make ATLAS support the Guid in javascript