My let's arent saving when i assign a value to them

Question

I am using electron version 2.0.5 and ipcMain and ipcRenderer to pass data between my HTML and my main.js

let fna,lna,emaila,passa;
ipcMain.on('fname', function(er, fn){
  fna = fn;
  console.log(fn)
});

console.log(fna);

When I test it the function runs and when the first console.log runs. I get the right data. But when the second one runs I get undefined... I do not understand electron very well as I am new to it.

Thank you in advance.

Also see: https://stackoverflow.com/questions/51619966/how-to-call-a-function-with-a-promise and https://stackoverflow.com/questions/51619394/asynchronous-behavior-of-functions-in-typescript — lealceldeiro, Aug 07 '18 at 19:07

score 0 · Answer 1 · answered Aug 07 '18 at 19:05

0

Your second log (fna) is called before the ipcMain.on is called, so it has not been assigned yet.

answered Aug 07 '18 at 19:05

Steven Spungin

27,002
5
88
78

so how would i run that after the ipcMain.on ? – Snips YT Aug 07 '18 at 19:05
You need to call dependent code from inside ipcMain.on – Steven Spungin Aug 07 '18 at 19:08
so can i nest the ipcMain.on's ? – Snips YT Aug 07 '18 at 19:08
Exact scenario: https://stackoverflow.com/questions/51619394/asynchronous-behavior-of-functions-in-typescript/51619480#51619480 – lealceldeiro Aug 07 '18 at 19:08
You could also set a timer and poll the fna until it was defined. Not the 'fastest' or most efficient way though – Steven Spungin Aug 07 '18 at 19:08
Yes, you define the function separately in that case. – Steven Spungin Aug 07 '18 at 19:09
thanks it works now just by moving that last cde into my ipcMain.on – Snips YT Aug 07 '18 at 19:12

My let's arent saving when i assign a value to them

1 Answers1