How can I convert last portion of jQuery part into JavaScript?

How can I convert jQuery into JavaScript? I need help I can't solve this please help me anyone

$(".expand").click(function() {
          var el = $('.parrent');
          var curHeight = $('.parrent').height();
          if (curHeight == 200) {
            let autoHeight = el.css('height', 'auto').height();
            el.height(curHeight).animate({
              height: autoHeight
            }, 1000);
            $(".expand").text("see less")
            }
           else 
            {
               let autoHeight = el.css('height', '200px').height();
               el.height(curHeight).animate({
               height: autoHeight
            }, 1000);
            $(".expand").text("see more");
      }
  });