I am using a basic windows.onload function on a html page.

That's working completely fine on Firefox and Edge as expected but not working on Chrome.

I am using the below code:

jQuery(function($){
    window.onload = function(){
        setTimeout(function(){ 
            jQuery("#loader").hide();
            jQuery("#cont").show();
            jQuery("#cont > div").hide();
            jQuery("#game-start31").show();
       }, 3000);        
    };
});

Not sure if chrome does not like my code or I have violated any terms of them.

Can anyone please let me know where I am making mistake?

Thank you.