After adding the script, some other scripts do not work?

Question

JavaScript

After adding this:

var $block = $('#lk-conteyner'),
    blockPos = $('#lk-conteyner').offset().top;
$(window).scroll(function(){
  var currentScroll = $(this).scrollTop();
  		console.log(currentScroll);
     if ( currentScroll > blockPos ) {
     		$block.slideUp(200);
     } else {
     		$block.slideDown();
     }
});

Scripts like this one don't work:

$(window).scroll(function(){
        if ($(window).scrollTop() > 1) {
            $('header').addClass('cont_header');
        }
        else {
            $('header').removeClass('cont_header');
        }
    });

What's wrong? How to fix?
Thank you for your attention Lord