Uncheck a checked box when the browser's Go Back button used

I know how to do this in jquery. There are two ways:

$(document).ready(function(){
$('input:checkbox').prop('checked',false);});

Code (markup):

or

$(document).ready(function(){
$('#yourcheckbox').prop('checked',false);});

Code (markup):

What would be an equivalent to this in pure javascript?

 

Hi Qwikad.
I'd probably use

document.querySelector('input[type="checkbox"]').checked = false

Code (JavaScript):

for the 1st part. Is wrapping it inside $(document).ready() necessary?