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'use strict';
window.addEventListener("scroll", () => {
const articles = document.getElementsByTagName('article');
const header = document.getElementById('side-bar');
if(window.pageYOffset >= 500){
if( header ) {
header.classList.add('hidden');
}
if( articles ) {
console.log(articles);
Array.from(articles).forEach( (e) => {
console.log(e);
e.classList.add('zen-mode');
});
}
} else {
if( header ) {
header.classList.remove('hidden');
}
if( articles ) {
Array.from(articles).forEach( (e) => {
e.classList.remove('zen-mode');
});
}
}
});
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