jQuery: new element and insert element.

How to create a new element in jQuery:

var unreadMarker = $('<a>', {
  "class": "unread-marker"
});

OR

var unreadMarker = $('<a class="unread-marker"></a>');

How to insert element:

a.after(b) ==>  <a>  <b>

a.insertAfer(b) ==> <b> <a>

a.append(b) ==> <a> xx yy b </a>

a.prepend(b) ==> <a> b xx yy </a>