How to implement filter without jquery?

Question

JavaScript

the date variable stores String (text) = html page, if it's simpler, you need to find the id="root" element in it and take it in place with the child elements.
the script itself Thanks in advance
$(data).filter('#root').html();

Answer 1

I found the solution myself, thanks everyone

var tmp = document.implementation.createHTMLDocument();
          tmp.body.innerHTML = str;
          return tmp.body.querySelector('#root');;