User entry for a class file

Hello there.

I am a Taiwanese and because my poor English that may hard to understand my question so I'm sorry about that first. I want to build a game for teaching JavaScript, because I am a student that's something like my assignment. This game provide a blank block that user can type their code in it. And the game objects will act by that.

I want to know if it is possible that get the entry of user, and execute it like a js file. e.g. a whole class file type from user.

I have found some question for that as follow: http://answers.unity3d.com/questions/14367/how-can-i-wait-for-unity-to-recompile-during-the-e.html

And I wonder if that is actually what I want.

Thanks you guys for reading my question. I'm waiting for your answers.

update 5/28/2015

 if (GUI.Button(Rect(600,10,50,50),btnTexture))
 {
     if (!System.IO.File.Exists ("../tryFile.js")) 
     {
        stringToEdit = "You don't have such file like that";
     }
     else
     {
         AssetDatabase.ImportAsset("../tryFile.js",ImportAssetOptions.ForceSynchronousImport);
     }
               
     try
     {
         object.AddComponent.<tryFile>();
     }
     catch(err)
     {
         stringToEdit = err.Message;
     }
 }

I make a textArea and after I finished my class code in it, I click an button and then it will write a js file by StreamWriter.

And then I click this texture button. It checks if the file is exist. Then use AssetDatabase.ImportAsset to load theFile.

Then I try to add that js file as a component of a gameObject which name is "object".

And it cause a compile time error (of course).

I just want to know is there has any way to solve it T_T.

----------update 5/28/2015

It's the compile error message:

Assets/TextBoxCreator.js(37,38): BCE0018: The name 'testjs' does not denote a valid type ('not found').

And it is my whole code:

 #pragma strict
 
 var stringToEdit : String = "Hello World";
 var btnTexture : Texture;
 var object : GameObject;
 
 function Awake()
 {
     object = GameObject.Find("testObject");
 }
 
 function OnGUI () 
 {
     // Make a text field that modifies stringToEdit.
     stringToEdit = GUI.TextArea (Rect (10, 10, 500, 500), stringToEdit, 1000);
     
     if (!btnTexture) 
     {
         Debug.LogError("Please assign a texture on the inspector");
         return;
     }
     if (GUI.Button(Rect(600,10,50,50),btnTexture))
     {
         if (!System.IO.File.Exists ("../Assets/tring/testjs.js")) 
            {
  
             stringToEdit = "You don't have such file like that";
          }
          else
          {
              AssetDatabase.ImportAsset("../Assets/tring/testjs.js",ImportAssetOptions.ForceSynchronousImport);
              stringToEdit = "import sucess?\n";
          }     
          
          try
          {
              object.AddComponent.<testjs>();
          }
          catch(err)
          {
              //AssetDatabase.ImportAsset
              stringToEdit = err.Message;
          }
      }
     if (GUI.Button(Rect(600,70,50,30),"Click"))
     {
         //create Folder
            if (!System.IO.Directory.Exists ("../Assets/tring")) 
            {
  
             System.IO.Directory.CreateDirectory ("../Assets/tring");
          }
 
          System.IO.File.WriteAllText("../Assets/tring/testjs.js",stringToEdit);
          
          stringToEdit = "export sucess?\n";
     }
 }
 

Hope there has anyway to do itT_T