What is the difference between $('div') and $('<div/>') in jQuery?

Question

Tell me the difference for below two functions

$(document).ready(function() {

    alert("Function using Document Ready");

}

vs

$(function() { 
  alert("Normal function");
}

Answer 1

$('< div/ >') :This creates a new div element. However this is not added to DOM tree unless you don't append it to any DOM element.

$('div') : This selects all the div element present on the page.