Calling a Javascript function that returns a string from C# in Project Tiny

I'm trying to call a Javascript function that returns a string from C#. I can do this fine with floats but when I try and get a string back, the value is always null.

I have added a Javascript file to a ~js folder that looks like this:

Code (JavaScript):

1. mergeInto(LibraryManager.library, {
2.  
3.   GetFloat: function() {
4.    return -0.1;
5.   },
6.  
7.   GetString: function() {
8.     return "This is a string";
9.   }
10. });

In my C# codee I have this:

Code (CSharp):

1. [DllImport("__Internal")]
2.         private static extern float GetFloat();
3.  
4.  
5.         [DllImport("__Internal")]
6.         private static extern string GetString();
7.  
8.         protected override void OnUpdate()
9.         {
10.             float javascriptFloat = GetFloat();
11.             string javascriptString = GetString();
12.  
13.             UnityEngine.Debug.Log(string.Format("{0}", javascriptFloat));
14.             UnityEngine.Debug.Log(javascriptString);
15.         }

I recive the float back just fine but the stirng comes back as null, or more specifically:

null (null message, maybe a format which is unsupported?) 

When I change javascriptString to be a var and log it's type I get:

Non-Trivially-Stringable OBJECT logged (Not supported in DOTS C#)

I also tried converting my Javascript string into a char array but I get the same issue. Is there any way to pass a string like this? My ultimate goal is actually to send some json from the javascript which I assumed I would need to do as a string.

 

Hi Alexis,

There is a very nice example of how to communicate between C# and JS in the documentation under
Interacting with browser scripting (Javascript/C# interoperability), have a look here:
https://docs.google.com/document/d/...HfnAX-CpYLK3aOdwA/edit#heading=h.6u7xyqroin5d

 

Thanks, I clearly missed that section. That seems to have what I need, I'll go ahead and try it out.