JT-CIM-GBNT-Admin-YX/yxgb-admin-midway/public/js/welcome.js

const duration = 0.8;
const delay = 0.3;
// eslint-disable-next-line no-undef
const revealText = document.querySelector('.reveal');
const letters = revealText.textContent.split('');
revealText.textContent = '';
const middle = letters.filter(e => e !== ' ').length / 2;
letters.forEach((letter, i) => {
  // eslint-disable-next-line no-undef
  const span = document.createElement('span');
  span.textContent = letter;
  span.style.animationDelay = `${delay + Math.abs(i - middle) * 0.1}s`;
  revealText.append(span);
});