Given That In The Code Of My Index Html Webpage I Have The Following H1 Id Final

Given that in the code of my index.html webpage, I have the following:

=>< = =>Hover your mouse over me!></>> () { xhttp = XMLHttpRequest(); xhttp.onreadystatechange = () { (.readyState == && .status == ) { .getElementById().innerHTML = .responseText; } }; xhttp.open(, , ); xhttp.send();}>

What computer language is used between the script elements?