Pointer_stringify() is not defined.(Pass string to js)

As title, I have tried to pass a string to js function, and caught this error from browser.

First I thought maybe it's due to the emsdk in my environment, but apparently Unity would cache it's own,
so what should I do?

below is my code

C#

Code (CSharp):

1. [DllImport("__Internal")]
2. private static extern string HelloString(string str);
3.  
4. protected override void OnUpdate()
5. {
6.       var s = HelloString("Hello js!");
7.  
8.       //snip
9. }
10.  

JS

Code (JavaScript):

1. mergeInto(LibraryManager.library, {
2.     HelloString: function (str) {
3.         window.alert(pointer_stringify(str));
4.      
5.         var returnStr = "Hello C#!";
6.         var bufferSize = lengthBytesUTF8(returnStr) + 1;
7.         var buffer = _malloc(bufferSize);
8.         stringToUTF8(returnStr, buffer, bufferSize);
9.         return buffer;
10.     }
11. });

 

I believe pointer_stringify has been removed (deprecated for a while) in the version of Emscripten that Tiny uses (sadly the Unity WebGL platform uses an older variant) - you shoulld be able to simply replace it with UTF8ToString.

UTF8ToString has an overload so you don't have to manually calculate the string size like what's happening in the snippet (which is stringToUTF8 not UTF8ToString).

i.e. just try

window.alert(UTF8ToString(str));

 

Unity should really update that description on the site since the official example is outdated...
Thanks a lot !

 

Please Update the documentation!
It is really frustrating, when even the example code does not work

 

After upgrading to Unity 2021.2 it appears that WebGL builds now don't allow/include pointer_stringify(), replacing with
UTF8ToString() works.

 

Awesome Thank You! Saved me some headache

 

hey how do I do this Where should I change the code
Need help

 

Just exactly as JJJohan said

so in short instead of

Code (CSharp):

1. window.alert(pointer_stringify(str));

use

Code (CSharp):

1. window.alert(UTF8ToString(str));