Syntax error. WHERE!?

Question

https://sololearn.com/compiler-playground/WiNiEZ378Aem/?ref=app

Answer 1

Ethan
It is invalid to try to assign to the result of an optional chaining expression

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Optional_chaining

Basically, it can't be on the left hand side of the "=" symbol.

But you can use the setProperty method instead.

document.getElementById("loadingScreen")?.style.setProperty("display","none");

Answer 2

The error you're encountering with the line document.getElementById("loadingScreen")?.style.display = "none"; is likely due to the optional chaining operator (?.) being used in a way that is not supported in all environments or by the JavaScript engine you are using.

Replace this:

document.getElementById("loadingScreen")?.style.display = "none";

With this:

const loadingScreen = document.getElementById("loadingScreen");
if (loadingScreen) {
loadingScreen.style.display = "none";
}

Answer 3

please stop tagging your next javascript questions as java ..