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I’m using Twitter Bootstrap and I’m having a problem with the top-bar menu. When I choose an item from the dropdowns, all the events are fired correctly, JavaScript is OK, but there is a visual something (a div probably?) that slides down and then disappears. It looks like this:

ugly sliding-down bug image

I’m not a Twitter Bootstrap expert, but I expect I’ve got some invalid HTML put there. Entire HTML code is available here:, but probably the most important part is this:

    <!-- Fixed navbar -->
    <nav class="navbar navbar-default navbar-fixed-top">
        <div class="container">
            <div id="navbar" class="navbar-collapse collapse">
                <ul class="nav navbar-nav">
                    <li class="dropdown">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Samples <span class="caret"></span></a>
                        <ul class="dropdown-menu" role="menu">
                            <li class="dropdown-header">faker.js</li>
                            <li><a href="#" id="example_faker" data-toggle="collapse" data-target=".navbar-collapse">faker example</a></li>
                            <li class="divider"></li>
                            <li class="dropdown-header">chance.js</li>
                            <li><a href="#" id="example_chance" data-toggle="collapse" data-target=".navbar-collapse">chance example</a></li>
                            <li class="divider"></li>
                            <li class="dropdown-header">other</li>
                            <li><a href="#" id="example_boolean" data-toggle="collapse" data-target=".navbar-collapse">boolean</a></li>
                            <li><a href="#" id="example_integer" data-toggle="collapse" data-target=".navbar-collapse">integer</a></li>
                            <li><a href="#" id="example_array" data-toggle="collapse" data-target=".navbar-collapse">array</a></li>

The question is: what can I do to remove the “sliding-down-and-disappearing-thing” bug?


This app supports the mobile version as well. It looks like this:

mobile version mainpage image

When you touch the top right hand nav button, the menu appears:

mobile version mainmenu image

Now when I click samples, the submenu appears:

mobile version samples submenu image

And when I click any of the options, I would like all menus to hide (collapse), just to see the demo immediately.

Now the mobile works as intended :). And I’d like the non-mobile-sliding-bug solution not ot break the mobile version.



  1. <div id="navbar" class="navbar-collapse collapse">

    Remove the 2 css classes.

    This 2 classes are supposed to works with the dropdown system. So the dropdown system try to do something weird with this div and it doesn’t really works.

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  2. Bootstrap menu is not designed to work like this.
    Take a look at and preview it as a mobile device as well.

    A simple workaround for what you want to do would be to have JS that will do the hiding, like:

    <a href="#" onclick="hideNavbarMenu()" id="example_chance">chance example</a>

    And the JS:

    function hideNavbarMenu() {

    Note that I also removed the data-toggle="collapse" data-target=".navbar-collapse" from the links.

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