Up and Running with Bootstrap 3
Illustration by John Hersey

Solution: Tooltips


From:

Up and Running with Bootstrap 3

with Jen Kramer

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Video: Solution: Tooltips

All right, so how'd you do? What did you think of those Tooltips? I'm taking a look at file 05_05, which comes from the exercise files folder, just copy that HTML in to your Bootstrap folder and pull it up here in the browser. And this is my solution, so down here at the bottom of the page we have all of our read more buttons. As you roll your mouse over these you'll see a little Tooltip that comes up. It's not terribly helpful I don't think in terms of user experience, I'm not sure that these Tooltips do a lot but hey, we've got Tooltips on this page and you can at least see how they work.
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  1. 5m 25s
    1. Welcome
      58s
    2. Using the exercise files
      1m 19s
    3. Installing Sublime Text 2
      3m 8s
  2. 29m 0s
    1. What is Bootstrap?
      8m 1s
    2. Downloading and unzipping Bootstrap 3
      4m 31s
    3. Examining Bootstrap file structure
      4m 34s
    4. Adding CSS to a Bootstrap HTML file
      4m 35s
    5. Adding JavaScript to a Bootstrap HTML file
      7m 19s
  3. 43m 46s
    1. Exploring Bootstrap's grid system
      9m 10s
    2. Creating new rows and cells
      13m 17s
    3. Adjusting column widths using offset
      5m 2s
    4. Changing column order using push and pull
      5m 33s
    5. Nesting columns
      3m 42s
    6. Creating a JumboTron-style layout
      3m 40s
    7. Challenge: Working with grids
      1m 30s
    8. Solution: Working with grids
      1m 52s
  4. 53m 33s
    1. Exploring basic typography: The small and blockquote tags
      4m 28s
    2. Exploring Bootstrap's responsive classes including .hidden and .visible
      4m 44s
    3. Styling buttons using btn classes
      4m 43s
    4. Styling images with responsiveness and decorative touches
      5m 22s
    5. Incorporating Bootstrap 3 glyph icons
      3m 28s
    6. Creating a thumbnail gallery
      6m 2s
    7. Styling tabular data
      5m 3s
    8. Overriding core CSS with custom styles
      12m 53s
    9. Challenge: Styling panels and callouts
      2m 17s
    10. Solution: Styling panels and callouts
      4m 33s
  5. 27m 40s
    1. Implementing location breadcrumbs
      6m 37s
    2. Using tabs and pills for navigation
      6m 58s
    3. Developing a responsive navigation bar
      9m 9s
    4. Challenge: Modify the "pancake" button
      1m 3s
    5. Solution: Modify the "pancake" button
      3m 53s
  6. 37m 45s
    1. Implementing dropdowns within a navigation bar
      5m 5s
    2. Tabbing within the same page
      15m 45s
    3. Accordion panels with collapse functionality
      11m 37s
    4. Challenge: Tooltips
      1m 59s
    5. Solution: Tooltips
      3m 19s
  7. 3m 0s
    1. Next steps towards advanced Bootstrap
      3m 0s

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Watch the Online Video Course Up and Running with Bootstrap 3
3h 21m Beginner Oct 07, 2013

Viewers: in countries Watching now:

Meet Bootstrap, the one-stop shop for designing sleek, mobile-ready websites with HTML5, CSS3, and JavaScript. It's an open-source, responsive design framework, featuring a grid-based layout system, web-ready icons you can incorporate into your designs, fully functional navigation, and much more. Join Jen Kramer for a quick overview of all of the goodies in Bootstrap, and then learn how to customize the grid, override the CSS to customize your site, and leverage Bootstrap's stylish built-in JavaScript effects. Once you're prepared to test your knowledge, you can take the hands-on challenges offered by Jen.

Topics include:
  • Downloading and installing Bootstrap
  • Understanding the Bootstrap file structure
  • Exploring the 12-column grid
  • Changing column width and order
  • Styling buttons, images, and tables
  • Overriding core CSS
  • Creating a thumbnail gallery
  • Adding JavaScript effects, like dropdown menus, tabs, accordions, and more
Subject:
Web
Software:
Bootstrap
Author:
Jen Kramer

Solution: Tooltips

All right, so how'd you do? What did you think of those Tooltips? I'm taking a look at file 05_05, which comes from the exercise files folder, just copy that HTML in to your Bootstrap folder and pull it up here in the browser. And this is my solution, so down here at the bottom of the page we have all of our read more buttons. As you roll your mouse over these you'll see a little Tooltip that comes up. It's not terribly helpful I don't think in terms of user experience, I'm not sure that these Tooltips do a lot but hey, we've got Tooltips on this page and you can at least see how they work.

So, how exactly did I manage to get this to work? Well, that's over in our HTML. And if you scroll on down the page here, on down to the bottom, say around line 74, this is the line of code that's calling for the read more button. And you'll see that I've added two things here to make this Tooltip happen. What is the data hyphen toggle equals Tooltip? Remember data hyphen anything has to do with JavaScripts so we've bound the JavaScript here to this link and that's going to make the Tooltip magic happen. And I've also added a title attribute.

Now the title attribute is something that's an HTML standard. You can add a title attribute to pretty much any HTML tag at all. And in Firefox at least when you roll your mouse over something it'll come up as a little browser-driven Tooltip, but what Bootstrap is doing is adding some styling to that browser-driven Tooltip to make it look really pretty. So, as you see here, the title of that is read more about vaccines, so that's where that text is coming from. If you just do this much, though. And you try putting this in your browser. You're going to see, especially if you're using Firefox.

You're just going to see little bits of the words. But they're not going to be styled with the little black bubble, the way that you saw in the example. The trick to getting all of that work is down, further down the page here. Down here in the script portion of this. So I've added a call to JavaScript. What you have to do with these Tooltips is, you have to initialize them. And the reason why is, you don't want JavaScript spending all its time listening to every single HTML element in your webpage just in case anyone ever happened to roll their mouse over it.

And in case there ever happened to be a Tooltip associated with it. It just takes up a lot of processing power and makes your page run slow and all kinds of other things. So it's a good practice to tell JavaScript that there's Tooltips associated with certain elements on your page but not every element on your page. And then of course you have to tell JavaScript which elements those are. What happens to be is that those buttons all have something in common. And the A tag in each of those has the same classes, one of which is BTN-info. So I chose as my selector here A.Button-info.

So in other words, an A tag with a class of button-info.Tooltip. This is what initializes the JavaScript. So, anytime the mouse is going to roll over one of those links, that happens to have a class of button-info, the Tooltip JavaScript is going to run, and see if there a need to display a Tooltip for that particular item. So, that's how this is all set up, and how it's working together to make the magic happen. So, I hope that you get Tooltips working on your page. Maybe you tried a few experiments with some of the other attributes associated with Tooltips.

It's a pretty handy little feature that you might find useful on your next website.

Find answers to the most frequently asked questions about Up and Running with Bootstrap 3 .


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Q: I don't see the respond.min.js file at the URL mentioned in the Chapter 1 movie "Adding JavaScript to a Bootstrap HTML file" (https://github.com/scottjehl/Respond). How do I access the file?
A: It appears the respond.js author updated the code or rearranged the file structure. You can find respond.min.js at this URL: https://github.com/scottjehl/Respond/tree/master/dest.
 
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