Native JS for jQuery Functions

native_js_jquery

//----Append HTML elements----
 
  /* jQuery */
  $(document.body).append("<div id='myDiv'><img src='im.gif'/></div>");
 
  /* native equivalent */
  var frag = document.createDocumentFragment();
 
  var myDiv = document.createElement("div");
  myDiv.id = "myDiv";
 
  var im = document.createElement("img");
  im.src = "im.gif";
 
  myDiv.appendChild(im);
  frag.appendChild(myDiv);
 
  document.body.appendChild(frag);
 
//----Prepend HTML elements----
 
  // same as above except for last line
  document.body.insertBefore(frag, document.body.firstChild);

//----Adding a class------
 
  /* native equivalent */
  el.classList.add("someClass");
 
//----Removing a class-----
  
  /* native equivalent */
  el.classList.remove("someClass");

//----Does it have class---
 
  /* native equivalent */
  if(el.classList.contains("someClass"))