Is it possible to run JavaScript in the background in the phone's browser?

Question

JavaScript

We have a banal script:

(function() {
  var $container = $('#container');

  $(function() {
    var digit = 0;
      setInterval(function() {
        digit += 3;
        $container.append(digit + "</br>");
      }, 3000);
   });
})();

If you run this script in the phone's browser (for example, iPhone) and put the phone into standby mode (by pressing the power button), the script will be stopped. After the phone is taken out of standby mode, the script will resume.
Question : Is it possible for a JS script to run in the background in the browser, as it happens in native applications?
( for example, applications that collect GPS coordinates by time interval )

Answer 1

no, js background work is not possible, it makes sense to check the time from the start of the timer by interval and adjust the value.

Answer 2

Androids have the ability to create background services . There is a plugin
for iOS . So yes, it is possible, but it will also eat resources in the background.