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Up and Running with Bootstrap 2

Adding a dropdown menu to the navigation bar


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Up and Running with Bootstrap 2

with Jen Kramer

Video: Adding a dropdown menu to the navigation bar

So over the course of the last few videos we've built this fully responsive navigation bar. We know that it will respond to smaller screen sizes by hiding this navigation where required. You can access it through JavaScript, which will make a nice easily clicked on navigation bar work great on a mobile phone. But you might be wondering about one aspect of this bar that we haven't explored yet. And that is there's only one level of navigation here, just the primary navigation is present. What about secondary navigation or tertiary navigation? How do we show that on this web page? Well, certainly you could always take the approach of plugging in, in left column or right on this web page or even another horizontal bar that might contain those secondary or tertiary links.

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Up and Running with Bootstrap 2
2h 38m Beginner Oct 12, 2012

Viewers: in countries Watching now:

Bootstrap is a free web development tool from Twitter that, with a little bit of CSS and JavaScript experience, makes building websites quick, intuitive, and fun. Author Jen Kramer explores its 12-column grid layout; typography and icon libraries; fully functional components like nav bars, buttons, and tabs; and much more. This course also shows how to add JavaScript extras like dropdown menus, modal windows, and photo carousels.

Topics include:
  • Understanding the difference between default and fluid grids
  • Nesting with fluid grids
  • Creating a thumbnail gallery
  • Adding block quotes and lists of text
  • Incorporating images and icons
  • Adding breadcrumb navigation and pagination
  • Using tabs and pills navigation
  • Making the nav bar responsive with JavaScript
  • Adding dropdown menus to the nav bar, tabs, and pill
Subjects:
Web CMS Blogs Responsive Design Web Design
Software:
Bootstrap
Author:
Jen Kramer

Adding a dropdown menu to the navigation bar

So over the course of the last few videos we've built this fully responsive navigation bar. We know that it will respond to smaller screen sizes by hiding this navigation where required. You can access it through JavaScript, which will make a nice easily clicked on navigation bar work great on a mobile phone. But you might be wondering about one aspect of this bar that we haven't explored yet. And that is there's only one level of navigation here, just the primary navigation is present. What about secondary navigation or tertiary navigation? How do we show that on this web page? Well, certainly you could always take the approach of plugging in, in left column or right on this web page or even another horizontal bar that might contain those secondary or tertiary links.

But a popular approach these days is to include dropdowns, and I get requested to teach how to make dropdowns all the time. Well, finally, I'm going to show you how to do it. Dropdowns are very easy to add here within Bootstrap, and I'm going to walk you through how we might go about doing that now. So down here in Dreamweaver, I've added a bit of code to this particular page. So here is the link for schedule. Notice that starts with an li then we have our a tag with the /a.

But the closing li doesn't occur until down here. Remember that these lists are actually nested within the li. That is the correct way to mark them up. So we have our ul here inside of that li with a /ul down here, and I have three bullets inside of that. What I'd like to do is have this become a dropdown menu. So let's take a look at where we are at this particular point. If you just open that document and then take a look at it inside of Firefox, you'll notice that we have indeed a bulleted list that appears right under the word schedule, which is great.

But it's not really a dropdown, because of course, it's showing right there on the page right now. So we need to add some additional styles in order to make this a dropdown. The first thing I'm going to do inside of Dreamweaver is for this specific li, the li belonging to that word schedule, I'm going to add a class of dropdown, which of course indicates that a dropdown will follow within this li. Then in the href side of this I'm going to add a class of dropdown-toggle, and then I'm going to use that data-toggle which is what is helping to integrate the JavaScript data-toggle="dropdown" just like that.

So we've added a class of dropdown-toggle and a data-toggle of dropdown to that a tag that's associated with the word schedule. Finally, what I want to do is add to the ul a class of dropdown-menu which is going to give me some styling here for the dropdown menu. So if you go ahead and save that--Ctrl+S or Command+S to save--Refresh the page inside of Firefox. Now you see that we have a navigation bar.

When I move my mouse over schedule and I click, you'll notice that I get a dropdown menu. So there's Day One, Day Two, and Day Three, and all these are clickable and will take you to those particular pages. How did I know that schedule was the one that had the dropdown menu? Well, I knew because I coded it. But how is a visitor of my web page going to know that schedule is the dropdown menu? An excellent question. It's likely that a visitor isn't going to know that that's a dropdown menu. So we should probably indicate somehow that schedule has got more behind it than just a single link.

So here back within Dreamweaver, we can add some additional code which will give us a little triangle that will appear right next to that word schedule that would indicate that a dropdown menu is located there. So right here after the word schedule, before the /a, go ahead and put in a span class of caret immediately followed by a /span. This little bit of code is going to put in that tiny little triangle arrow that would indicate that the dropdown lives right there.

Save your page, Ctrl+S or Command+S, refresh the page inside of Firefox, and now the word schedule has the little triangle right next to it, which would indicate that if you click on that you now have some additional options to explore. So dropdowns are pretty straightforward to add to our navigation toolbar. Actually, they're pretty easy to add to tabs and pills as well. I'll show you how to do that in the next video.

Find answers to the most frequently asked questions about Up and Running with Bootstrap 2.


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Q: I am trying to create the image carousels shown in this course, and they are not functioning properly. The custom.css file seems to be missing from the exercise files and I think this is the reason. Can you provide it?
A: custom.css isn't created until the carousel indicators are added. However, these styles have to do with the way the indicators look, and nothinghas to do with the way the carousel functions.
 
Are you sure you're working with Bootstrap 2.x? You download that from here: 
http://getbootstrap.com/2.3.2/. The carousel changed radically between Bootstrap 2.x and Bootstrap 3, and this course might not work with version 3.
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