How to parse via XMLHttpRequest?

Question

AJAX

How to get the element I need from the page?

var xhr = new XMLHttpRequest(); 
xhr.open('GET', '/change_pw', false);
xhr.onload = function () {
hash = document.getElementsByName("hash")[0].value.innerHTML = xhr.responseText;
};
xhr.send();
alert(xhr.hash);

I need to get in the hash console
the html page itself that opens

<input type="hidden" name="hash" value="9f396fe44e7c05c16873b05ec425cbad">

Answer 1

To get started https://learn.javascript.ru/xmlhttprequest
And this is
https://learn.javascript.ru/function-basics