simple question: "why does Eval() not work?"!

Question

I have a simple code to run, I never used Val, but I know its syntax:

var package = "edos.desktop";
eval(package + ".main()");

But it’s not working in my browser... I tried to use some alternatives like Function(package + ".main()"), setTimeout(package + ".main()");,setInterval(package + ".main()");, but amazingly, only the setInterval() worked, however, he kept repeating the code whenever he could...

my script with the main code:

var edos = {};
edos.desktop = {
    main: function() {
        document.writeln("este é um app!");
    },
}

and I need a solution, because eval() does not work, or some alternative to bypass the Eval...

DETAILS OF THE TESTED DEVICE:

Disposiivo: Moto G6 Play
Android: 8.0
Chrome Canary: 74

Answer 1

Have you ever considered that the mistake might be something other than Eval? "Eval doesn’t work" is unlikely, there’s no way a bug like this could happen in a browser like Chrome, even on Canary. Test

const body = "document.body";
const firstChild = eval(body + '.firstElementChild');
console.log(firstChild);

It works, doesn’t it work? So the problem isn’t in Eval.

setInterval() worked, however, it kept repeating the code always that can

When you pass a string to setInterval, it runs the Eval command behind the curtains, another proof that there is nothing wrong with Eval. The only difference in this case is that setInterval will wait a little before running Eval, rather than running it immediately.

Your problem is not Eval, review your code. If on the other hand you insist on using something setInterval to solve the problem, use setTimeout, which has the same functionality as setInterval, but is only executed once.