How to make a condition based on the search result in the current URL?

Question

URL Handling

Good day.
I am making a curved version of the site in two languages. And this option suits me in the constructor.
But in one place of the constructor, the built-in function doesn't work. I know it's not difficult to do this in JS, but I don't know how.
The question is very urgent .... Today, to hand over the site, but one page does not lend itself.

The principle is this

There is a site "URL"
We are looking for "?lang_ee" at the end of the URL.
If it is, write the text АААААААААААА
If it is not present, write the text BBBBBBBBBBBBBBB

Thank you

Answer 1

let params = new URLSearchParams(location.search);

if(params.has(`lang__ee`)){
    document.querySelector(`selector`).textContent = `Some Text`.
}else{
    document.querySelector(`selector`).textContent = `Other Text`.
}

selectorreplace with a valid selector of an existing element in which you want to output a message.