jQuery addClass example

Change class name on click in jQuery

HTML

<br>
<br>scroll down to see both divs and click both.
<br>
<br> 1. Does not close if you click body. 2. Does not close other menu. 3. close menu if menu item is clicked
<br>
<br>
<br>
<div class="cc-btn">
  <button class="tablabel country-btn" id="portimg"></button>
  <div id="mcontainer" class="dropdownmenu dropdowna">
    <a id="mclose" class="dropDownItem mclose" href="#home">Overview</a>
    <a id="mclose" class="dropDownItem" href="#about">Application Process</a>
    <a id="mclose" class="dropDownItem" href="#contact">Investment Options</a>
  </div>
</div>
<br>
<br>
<br>
<br>
<br>
<div class="cc-btn">
  <button class="tablabel country-btn" id="portimg"></button>
  <div id="mcontainer" class="dropdownmenu dropdownb">
    <a id="mclose" class="dropDownItem mclose" href="#home">Overview</a>
    <a id="mclose" class="dropDownItem" href="#about">Application Process</a>
    <a id="mclose" class="dropDownItem" href="#contact">Investment Options</a>
  </div>
</div>

CSS

body {
  background: #aaa;
}

.cc-btn {
  width: 100%;
  height: 4em;
}

.dropdowna,
.dropdownb {
  z-index: 100;
  display: none;
  transition: opacity 400ms ease-out;
  opacity: 0;
  top: -49px;
  left: -1.5em;
  width: 11em;
  height: 6.5em;
}

.dropdowna.active,
.dropdownb.active {
  opacity: 1;
  display: block;
  transform: translate(0, -100%);
  position: relative;
  top: -49px;
  left: -1.5em;
  width: 11em;
  height: 6.5em;
}

.dropdowna a,
.dropdownb a {
  color: white;
  padding-top: 14px;
  text-decoration: none;
  display: block;
  text-align: center;
}

#mcontainer {
  border-radius: 12px;
  background-color: rgba(0, 0, 0, 0.9);
  box-shadow: 0px 8px 16px 0px rgba(225, 225, 225, .3);
  z-index: 99999;
  padding: 5px 5px 5px 5px;
}

.dropdown a:hover {
  background-color: rgba(0, 0, 0, 0, 0.4)
}

.tablabel {
  background: rgba(0, 0, 0, .9);
  border: 1px solid #fff;
  color: #fff !important;
  height: 44px;
  width: 128px;
  -webkit-transition: ease-out 0.3s;
  -moz-transition: ease-out .3s;
  transition: ease-out .3s;
  transform: translate3d(0, 0, 0);
  font-size: 1em;
  cursor: pointer;
}

.tablabel:hover {
  color: transparent !important;
}

#portimg {
  background: url("http://ahimsainvestments.com/images/flags/portugal-flag.png");
  background-position: center 50%;
  background-size: 10em;
  transform: translate3d(0, 0, 0);
  height: 44px;
  width: 128px;
  color: #fff !important;
  line-height: 20px;
}

#portimg:hover {
  background: none;
}

#portimg:hover::after {
  content: 'PORTUGAL';
  color: #fff !important;
}

JavaScript

//open menu
	     const buttons = $('.country-btn');
	     const dropDownMenus = $('.dropdownmenu');
	     const dropDownItems = $('.dropDownItem')

	     buttons.click(function() {
	       dropDownMenus.removeClass('active');
	       $(this).next('div').promise().done(function() {
	         $(this).toggleClass('active');
	       });
	     });
	     //close if menu clicked
	     dropDownItems.click(function() {
	       dropDownMenus.removeClass('active');
	     });

	     //close if anything  but menu clicked
	     $(document).mouseup(function(e) {
	       var container = $("#oclick");

	       if (!container.is(e.target) // if the target of the click isn't the container...
	         &&
	         container.has(e.target).length === 0) // ... nor a descendant of the container
	       {
	         container.hide();
	       }
	     });