flashing alert

[admin]

Animated GIF is an easy solution.
This can also be achieved with Custom JavaScript. This example will show/hide all elements with additional class set to alert every second when 0/1/24 value is set to true. You can also change $('.alert').removeClass('hide'); to $('.alert').addClass('hide'); to hide the element when the object value is false.

Code:

$(function(){
  if (window.grp) {
    var timer;
    
    grp.listen('0/1/24', function(object) {
      if (object.value) {
        if (!timer) {
          timer = setInterval(function() {
            $('.alert').toggleClass('hide');
          }, 1000);
        }
      }
      else {
        $('.alert').removeClass('hide');
        clearInterval(timer);
        timer = null;
      }
    });
  };
});