Can jQuery be converted to pure JavaScript?

Question

JavaScript

For example, this code?

$(".hover").mouseleave(
  function() {
    $(this).removeClass("hover");
  }
);

Answer 1

Can. After all , jQuery is a JavaScript library .

document.querySelectorAll('.hover').forEach(function(el) {
  el.addEventListener('mouseleave', function() {
    this.classList.remove('hover');
  });
});