Convert the following jQuery dependent javascript to Vanilla js.

gistfile1.txt

# jQuery
$( '.post-type-archive-product #secondary' ).prepend( '<div class="close-drawer"></div>' );

# JavaScript
var drawer = document.createElement("div");
drawer.className="close-drawer"
document.querySelector('.post-type-archive-product #secondary').appendChild(drawer);



#jQuery
$( document ).ready( function() {
   $( '.single-product form.cart' ).attr( 'id', 'sticky-scroll' );
} );

# JavaScript
var ready = (callback) => {
  if (document.readyState != "loading") callback();
  else document.addEventListener("DOMContentLoaded", callback);
}
ready(() => { 
  document.querySelector('.single-product form.cart').setAttribute('id', 'sticky-scroll');
});



#jQuery
$( document ).on( 'click', '.mobile-filter', function( e ) {
	e.stopPropagation();
	e.preventDefault();
	$( 'body' ).toggleClass( 'filter-open' );
} );
  
# JavaScript 
document.querySelector(".mobile-filter").addEventListener("click", (e) => { 
	e.stopPropagation();
	e.preventDefault();
	document.querySelector('body').classList.toggle("filter-open");
});



 #jQuery 
 if ( 0 < $( '.term-description' ).length ) {
	$( '.woocommerce-products-header' ).addClass( 'description-exists' );
} 

# JavaScript
if ( 0 < document.querySelector(".term-description").length ) {
  	document.querySelector(".woocommerce-products-header").classList.add("description-exists");
}