how to redirect html if mobile browser detected code example

Example 1: How to Redirect Website to a Mobile Version when Accessed on a Mobile Device

if (screen.width <= 800) {  window.location = "http://m.domain.com";}

Example 2: redirect page on mobile screen size javascript

function redirect() {
   if (screen.width <= 950) {
      window.location = "https://www.google.com/";
   }