JAVASCRIPT

jquery append

$("p").append(" <b>Appended text</b>.");

jquery append div

$('#box').append(
  $('<div/>')
    .attr("id", "newDiv1")
    .addClass("newDiv purple bloated")
    .append("<span/>")
      .text("hello world")
);

jquery append

$("p").append(`<b>Some Bold</b>.`);

jquery append div

	$('#div_id').append(
      $('<div/>', {'id': 'child_div',  'class': 'className','style':'width: 100%; height: 100%;'})
    );

append to jquery

$("<span>Hello World!</span>").appendTo("p");

jquery append method

$("p").append("<b>Appended text</b>");