How to properly embed a construct in a string?

Question

JavaScript

Forgive me in advance. I don’t know what the question specifically refers to, so I set the tags. There is a script that when you click on the button displays a line in which there is a variable. let's say the line looks like this

var a=1;
$('<h1>'+a+'</h1>');

everything comes out great.
but I need to display this construction so that I can edit the text from the admin panel. I need to output like this:
<%=Language.Get("Footer_products_title") %>

$('<h1>'+<%=Language.Get("Footer_products_title") %>+'</h1>');

No matter what I do, I run into three problems:

1. My unknowing brain
   
2. This entry is output as a string and is not interpreted into what I want
   
3. The line is not displayed, because the script itself breaks
   

Again, sorry if anything, I'm trying to figure it out)

Answer 1

Does it come from the server? If yes, then like this
should work.
If this is from a template engine in JS, then like this

$('<h1>' + Language.Get("Footer_products_title") + '</h1>');