Keep Bootstrap dropdown open on click

I use a bootstrap dropdown as a shoppingcart. In the shopping cart is a 'remove product' button (a link). If I click it, my shoppingcart script removes the product, but the menu fades away. Is there anyway way to prevent this? I tried e.startPropagation, but that didn't seem to work:

<div id="shoppingcart" class="nav-collapse cart-collapse">
 <ul class="nav pull-right">
  <li class="dropdown open">
    <a href="#" data-toggle="dropdown" class="dropdown-toggle">Totaal:
    &acirc;&sbquo;&not; 43,00</a>

    <ul class="dropdown-menu">
      <li class="nav-header">Pakketten</li>

      <li>
       <span class="quantity">1x</span>
       <span class="product-name">Test Product </span>
       <span class="product-remove"><a class="removefromcart" packageid="4" href="#">x</a>
        </span></li>

      <li><a href="#">Total: &euro; 43,00</a></li>

      <li><a href="/checkout">Checkout</a></li>
    </ul>
  </li>
</ul>

As you can see tha element with class="dropwdown-toggle" made it a dropdown. Another idea was that I just reopen it on clicking programmatically. So if someone can explain me how to programmatically open a Bootstrap dropdown, it would help well!

Try removing the propagation on the button itself like so:

$('.dropdown-menu a.removefromcart').click(function(e) {
    e.stopPropagation();
});

Edit

Here is a demo from the comments with the solution above:

http://jsfiddle.net/andresilich/E9mpu/

Relevant code:

JS

$(".removefromcart").on("click", function(e){
    var fadeDelete = $(this).parents('.product');
    $(fadeDelete).fadeOut(function() {
        $(this).remove();
    });
    
    e.stopPropagation();
});

HTML

<div id="shoppingcart" class="nav-collapse cart-collapse">
 <ul class="nav pull-right">
  <li class="dropdown open">
    <a href="#" data-toggle="dropdown" class="dropdown-toggle">Totaal:
    &acirc;&sbquo;&not; 43,00</a>

    <ul class="dropdown-menu">
      <li class="nav-header">Pakketten</li>
        <li class="product">
            <span class="product-remove"><a class="removefromcart" packageid="2" href="#"><i class="icon-remove"></i></a></span>
            <span class="product-name">Test Product </span>
            <span class="quantity"><span class="badge badge-inverse">1</span></span>
        </li>
        <li class="product">
            <span class="product-remove"><a class="removefromcart" packageid="2" href="#"><i class="icon-remove"></i></a></span>
            <span class="product-name">Test Product </span>
            <span class="quantity"><span class="badge badge-inverse">10</span></span>
        </li>
        <li class="product">
            <span class="product-remove"><a class="removefromcart" packageid="2" href="#"><i class="icon-remove"></i></a></span>
            <span class="product-name">Test Product </span>
            <span class="quantity"><span class="badge badge-inverse">8</span></span>
        </li>
        <li class="product">
            <span class="product-remove"><a class="removefromcart" packageid="2" href="#"><i class="icon-remove"></i></a></span>
            <span class="product-name">Test Product </span>
            <span class="quantity"><span class="badge badge-inverse">3</span></span>
        </li>
        <li class="product">
            <span class="product-remove"><a class="removefromcart" packageid="2" href="#"><i class="icon-remove"></i></a></span>
            <span class="product-name">Test Product </span>
            <span class="quantity"><span class="badge badge-inverse">4</span></span>
        </li>
        <li class="divider"></li>
        <li><a href="#">Total: &euro; 43,00</a></li>
        <li><a href="/checkout">Checkout</a></li>
    </ul>
  </li>
</ul>

This answer is just a sidenote to the accepted answer. Thanks to both the OP and Andres for this Q & A, it solved my problem. Later, however, I needed something that worked with dynamically added items in my dropdown. Anyone coming across this one might also be interested in a variation Andres' solution that works both with the initial elements as well as elements added to the dropdown after the page has loaded:

$(function() {
	$("ul.dropdown-menu").on("click", "[data-keepOpenOnClick]", function(e) {
        e.stopPropagation();
	});
});

Or, for dynamically created dropdown menus:

$(document).delegate("ul.dropdown-menu [data-keepOpenOnClick]", "click", function(e) {
    e.stopPropagation();
});

Then just put the data-keepOpenOnClick attribute anywhere in any of the <li> tags or its child elements, depending on your situation. E.G.:

<ul class="dropdown-menu">
	<li>
        <-- EG 1: Do not close when clicking on the link -->
		<a href="#" data-keepOpenOnClick>
			...
		</a>
	</li>
	<li>
        <-- EG 2: Do not close when clicking the checkbox -->
		<input type="checkbox" data-keepOpenOnClick> Pizza
	</li>

    <-- EG 3: Do not close when clicking the entire LI -->
	<li data-keepOpenOnClick>
		...
	</li>
</ul>

On bootstrap 4, when you put a form inside the dropdown menu, it won't collapse when clicking inside of it.

So this worked best for me:

<div class="dropdown">
    <!-- toggle button/link -->
    <div class="dropdown-menu">
        <form>
            <!-- content -->
        </form>
    </div>
</div>

In short, You can try this. It is working for me.

<span class="product-remove">
  <a class="removefromcart" onclick=" event.stopPropagation();" packageid="4" href="#">x</a>
  </span>

The menu opens when you give show class to the menu, so you can implement the function yourself without using data-toggle="dropdown".

<div class="dropdown">
  <button class="btn btn-secondary" type="button">
    Dropdown button
  </button>
  <div class="dropdown-menu">
    <a class="dropdown-item" href="#">Action</a>
    <a class="dropdown-item" href="#">Another action</a>
    <a class="dropdown-item" href="#">Something else here</a>
  </div>
</div>
<div id="overlay"></div>

#overlay{
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 1000;
  display: none;
}

#overlay.show{
  display: block;
}

.dropdown-menu{
  z-index: 1001;
}

$('button, #overlay').on('click', function(){
  $('.dropdown-menu, #overlay').toggleClass('show')
})

Try this in codepen.

I was having the same problem with an accordion/toggle sub-menu that was nested within a dropdown-menu in Bootstrap 3. Borrowed this syntax from the source code to stop all collapse toggles from closing the dropdown:

$(document).on(
    'click.bs.dropdown.data-api', 
    '[data-toggle="collapse"]', 
    function (e) { e.stopPropagation() }
);

You can replace [data-toggle="collapse"] with whatever you want to stop closing the form, similar to how @DonamiteIsTnt added a property to do so.

I wrote some lines of code that make it works as perfect as we need with more of control on it:

$(".dropdown_select").on('hidden.bs.dropdown', function () {
    if($(this).attr("keep-open") == "true") {
        $(this).addClass("open");
        $(this).removeAttr("keep-open");
    }
});

$(".dropdown_select ul li").bind("click", function (e) {
    // DO WHATEVER YOU WANT
    $(".dropdown_select").attr("keep-open", true);
});