How can I check and set cookies in my code?

Question

JavaScript

Good afternoon!
I have a problem. I'm not strong in js, I ask for your help!
There is a code:

$(document).ready(function() {
  $(document).mousemove(function(pos) {
    if(pos.pageY <= 70) {
      $('#myModal').modal();
    }
  });
});

I need this code to work once a week (Showing a modal window)
I can't add jquery.cookies to this code. You need to set cookies after showing the modal window, if there are cookies, do nothing. Help me please

Answer 1

$(document).ready(function() {
  if (!$.cookie("popup")) {
    alert('нет кук');
    $.cookie("popup", 1, { expires : 7 });
  }
});

Answer 2

Thank you! Decided this way

if ($.cookie("popup")==undefined) {
$.cookie("popup",1,{expires:10});
$(document).ready(function() {
  $(document).mousemove(function(pos) {
        if(pos.pageY <= 70)
        {
          $('#myModal').modal();
        }
  });
});
}