@e-group/utils/scrollTo/scrollTo.js

eGroup team utils that share across projects.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = scrollTo;

/* eslint-disable no-param-reassign */
function easeInOutQuad(t, b, c, d) {
  t /= d / 2;
  if (t < 1) return c / 2 * t * t + b;
  t--;
  return -c / 2 * (t * (t - 2) - 1) + b;
}

;

function scrollTo(element, to, duration) {
  const start = element.scrollTop;
  const change = to - start;
  let currentTime = 0;
  const increment = 20;

  const animateScroll = () => {
    currentTime += increment;
    const val = easeInOutQuad(currentTime, start, change, duration);
    element.scrollTop = val;

    if (currentTime < duration) {
      setTimeout(animateScroll, increment);
    }
  };

  animateScroll();
}