How to get the content of a third party site tag using js?

Question

JavaScript

The question arose, how to get the content of, for example, the title tag of a specific site?
For example, there is a site site.com, you need to use js to get the title of the page.
As I understand it, you need to parse the entire page, and then display the contents of the title.

Answer 1

I agree with the previous colleague, but personally I see it this way: parsing the necessary data using a PHP script and loading it onto your page with AJAX.
For me, this is the easiest method.