[JavsScript]toggle slide

//toggle slide
 let slideUp = (target, duration=500) => {
        target.style.transitionProperty = 'height, margin, padding';
        target.style.transitionDuration = duration + 'ms';
        target.style.boxSizing = 'border-box';
        target.style.height = target.offsetHeight + 'px';
        target.offsetHeight;
        target.style.overflow = 'hidden';
        target.style.height = 0;
        target.style.paddingTop = 0;
        target.style.paddingBottom = 0;
        target.style.marginTop = 0;
        target.style.marginBottom = 0;
        window.setTimeout( () => {
          target.style.display = 'none';
          target.style.removeProperty('height');
          target.style.removeProperty('padding-top');
          target.style.removeProperty('padding-bottom');
          target.style.removeProperty('margin-top');
          target.style.removeProperty('margin-bottom');
          target.style.removeProperty('overflow');
          target.style.removeProperty('transition-duration');
          target.style.removeProperty('transition-property');
          //alert("!");
        }, duration);
  }

  let slideDown = (target, duration=500) => {
        target.style.removeProperty('display');
        let display = window.getComputedStyle(target).display;

        if (display === 'none')
          display = 'block';

        target.style.display = display;
        let height = target.offsetHeight;
        target.style.overflow = 'hidden';
        target.style.height = 0;
        target.style.paddingTop = 0;
        target.style.paddingBottom = 0;
        target.style.marginTop = 0;
        target.style.marginBottom = 0;
        target.offsetHeight;
        target.style.boxSizing = 'border-box';
        target.style.transitionProperty = "height, margin, padding";
        target.style.transitionDuration = duration + 'ms';
        target.style.height = height + 'px';
        target.style.removeProperty('padding-top');
        target.style.removeProperty('padding-bottom');
        target.style.removeProperty('margin-top');
        target.style.removeProperty('margin-bottom');
        window.setTimeout( () => {
          target.style.removeProperty('height');
          target.style.removeProperty('overflow');
          target.style.removeProperty('transition-duration');
          target.style.removeProperty('transition-property');
        }, duration);
  }
  var slideToggle = (target, duration = 500) => {
        if (window.getComputedStyle(target).display === 'none') {
          return slideDown(target, duration);
        } else {
          return slideUp(target, duration);
        }
  }

 document.querySelectorAll('.accord_open').forEach(function (node) {
     node.addEventListener('click', function (event) {

         var centerTit = this.closest(".accors_Rows");
         var target = centerTit.querySelector(".accord_cont");
         slideToggle(target, 200);
         centerTit.classList.toggle("on");

         $(".accors_Rows").not(centerTit).removeClass('on');
         $(".accord_cont").not(target).slideUp();

     });
 })