Which is fast document.getElementByID('txtName') or $('#txtName').?

Question

Tell me the difference for below two functions

$(document).ready(function() {

    alert("Function using Document Ready");

}

vs

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

Answer 1

Faster: document.getElementByID('txtName');
because
Native JavaScipt is always fast. jQuery method to select txtName "$('#txtName')" will internally makes a call to document.getElementByID('txtName'). As jQuery is written on top of JavaScript and it internally uses JavaScript only So JavaScript is always fast.