junkafarian

// The expensive animation is causing performance issues. Write the function 'yourFunction' that reduces calls to the animation.

function scrollHandler() {
  var items = document.querySelectorAll('.list-item');
  var i = 0;
  var len = items.length;

  for(; i < len; i++) {
    // perform expensive animation
  }

junkafarian

/* 
JavaScript Test
---------------

A small script to open a popup when clicking a link.
Once you click on the button, clinking on it again will close the popup.

*/

/* Task One - Improve this code