initially hide then toggle jquery code example

Example 1: jquery toggle show hide

$( "#clickme" ).click(function() {
  $( "#book" ).toggle( "slow", function() {
    // Animation complete.
  });
});

Example 2: on button click show collapse div jquery

$(function() {
  var b = $("#button");
  var w = $("#wrapper");
  var l = $("#list");
  b.click(function() {
    w.toggleClass('open'); /* <-- toggle the application of the open class on click */
  });
});