Internet Explorer Object doesn’t support property or method ‘preventDefault’

I was working on a web page where I need to show or hide a div on button click using jquery, very simple code like below:

$(function () {
     $('#btntest').click(function () {
           event.preventDefault();
           $('#testdiv').toggle();
     });
});

$(function () {

$('#btntest').click(function () {

event.preventDefault();

$('#testdiv').toggle();

});

it was working fine in chorme browser, but in IE I get the error like Object doesn’t support property or method ‘preventDefault’

at first I started thinking is it a problem of IE, but as Jquery is well established library I had to think that there is something wrong in my code, then I started checking and I found without passing the event object parameter in the function and I was calling event.preventDefault();

so the fixing was also very simple I just have to pass the event object as parameter…

$(function () {
     $('#btntest').click(function (event) {
           event.preventDefault();
           $('#testdiv').toggle();
     });
});

$(function () {

$('#btntest').click(function (event) {

event.preventDefault();

$('#testdiv').toggle();

});

Java Script Jquery