Difference between setTimeout with and without quotes and parentheses

Question

I am learning JavaScript and I have learned recently about JavaScript timing events. When I learned about setTimeout at W3Schools, I noticed a strange figure wh

Answer 1

i think the setTimeout function that you write is not being run. if you use jquery, you can make it run correctly by doing this :

    function alertMsg() {
      //your func
    }

    $(document).ready(function() {
       setTimeout(alertMsg,3000); 
       // the function you called by setTimeout must not be a string.
    });