src/js/zen.js


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'use strict';

const toggleArrow = document.getElementById('harr');
const initValue = document.body.style.getPropertyValue('--width_panel_bis');

toggleArrow.addEventListener('click', () => {
  if (toggleArrow.classList.contains('hide_arrow_off')) {
    showAbout();
    setTimeout(() => {
      toggleArrow.classList.remove('hide_arrow_off');
    }, 1000);
  } else {
    toggleArrow.classList.add('hide_arrow_off');
    hideAbout();
  }
});

function hideAbout() {
  document.body.style.setProperty('--width_panel_bis', '0px');
}

function showAbout() {
  document.body.style.setProperty('--width_panel_bis', initValue);
}

window.addEventListener('scroll', () => {
  const toggleArrow = document.getElementById('harr');

  if (window.pageYOffset >= 800) {
    if (toggleArrow) {
      toggleArrow.classList.add('hide_arrow_show');
    }
    // A hideAbout(header, articles);
  } else if (toggleArrow && !toggleArrow.classList.contains('hide_arrow_off')) {
    // A showAbout(header, articles);
    toggleArrow.classList.remove('hide_arrow_show');
  }
});