Easy-to-follow video tutorials help you learn software, creative, and business skills.Become a member

Reassigning CSS rules with JavaScript

From: Create a Sliding Tabbed Panel with jQuery and Dreamweaver

Video: Reassigning CSS rules with JavaScript

Now that we have we disabled the CSS rules that make our user interactive experience possible, we need to add them back in with JavaScript. So in Dreamweaver, let's come back to our sliding_ panels.js file, let's scroll up, let's find our document ready, and the first thing we are going to do in the document ready is set a block property back onto the tabs container. So we'll type dollar sign, beginning and ending parentheses, tick marks for a string literal, .sp, space, .tabs, outside of the parentheses .css, another set of parentheses, semicolon, inside of the parentheses for css two tick marks for the first string literal. We are going to type display, outside of the string literal comma, another string literal. Let's put in block.

Reassigning CSS rules with JavaScript

Now that we have we disabled the CSS rules that make our user interactive experience possible, we need to add them back in with JavaScript. So in Dreamweaver, let's come back to our sliding_ panels.js file, let's scroll up, let's find our document ready, and the first thing we are going to do in the document ready is set a block property back onto the tabs container. So we'll type dollar sign, beginning and ending parentheses, tick marks for a string literal, .sp, space, .tabs, outside of the parentheses .css, another set of parentheses, semicolon, inside of the parentheses for css two tick marks for the first string literal. We are going to type display, outside of the string literal comma, another string literal. Let's put in block.

So we set display none as the default state, and now with JavaScript we are going to go back and reassign display to block. After that instruction, let's hit a few returns and let's target the other two items. So dollar sign, parentheses, two tick marks for a string literal. We are going to type .sp .panel_container .panel. Outside of the parentheses, we are going to type .css, parentheses, semicolon.

Now, we need to set multiple CSS properties here, so we need to add a beginning and ending bracket first. We are first going to reset the position, after the string literal, colon, another string literal. We are going to set absolute. Then we are going to hit a comma. Now we need to set the height. Two tick marks for a string literal, then a colon, two more tick marks, 400 pixels.

Next line dollar, sign parentheses, tick marks inside for a string literal, .sp .panel_container.panels, plural. Outside of those parentheses .css, beginning and ending parenthesis, semicolon, brackets inside for multiple properties. Inside of the brackets, two tick marks, position colon, another string literal, absolute, comma, next property top, colon, string literal, zero pixels.

So what we are basically doing here is the true rules that we set in our CSS originally and then removed, we're adding them back in with JavaScript here. So let's hit File > Save. Let's come back to index.html. Let's choose File > Save All to test this. Now in this case, I am going to come over here and test this in a browser. I am going to choose Safari. So now when this loads in Safari, our tabs come back. Our interactive user experience is in place.

But now what I am going to do here is I am going to come up to the Develop menu. I am going to disable JavaScript and then reload the page and see what this page would look like if somebody didn't have JavaScript. So as you can see, we saw exactly what we saw earlier in Dreamweaver. All of the panels stack up. We see all of the CSS design properties we put in place, but we don't get them stacked up. We don't see the tabs and we don't see the advanced user experience. And then of course if we come over here and disable styles altogether, this is exactly the page somebody would see if they didn't have JavaScript or CSS.

So all of the content would be visible and accessible; they just wouldn't get the added style and they wouldn't get the advanced user experience that we get with JavaScript. So that completes adding the progressive enhancement technique here. Next we'll talk about how you might want to apply progressive enhancement techniques to some of my other courses.

Show transcript

This video is part of

Start learning today

Get unlimited access to all courses for just $25/month.

Become a member
Sometimes @lynda teaches me how to use a program and sometimes Lynda.com changes my life forever. @JosefShutter
@lynda lynda.com is an absolute life saver when it comes to learning todays software. Definitely recommend it! #higherlearning @Michael_Caraway
@lynda The best thing online! Your database of courses is great! To the mark and very helpful. Thanks! @ru22more
Got to create something yesterday I never thought I could do. #thanks @lynda @Ngventurella
I really do love @lynda as a learning platform. Never stop learning and developing, it’s probably our greatest gift as a species! @soundslikedavid
@lynda just subscribed to lynda.com all I can say its brilliant join now trust me @ButchSamurai
@lynda is an awesome resource. The membership is priceless if you take advantage of it. @diabetic_techie
One of the best decision I made this year. Buy a 1yr subscription to @lynda @cybercaptive
guys lynda.com (@lynda) is the best. So far I’ve learned Java, principles of OO programming, and now learning about MS project @lucasmitchell
Signed back up to @lynda dot com. I’ve missed it!! Proper geeking out right now! #timetolearn #geek @JayGodbold
Share a link to this course

What are exercise files?

Exercise files are the same files the author uses in the course. Save time by downloading the author's files instead of setting up your own files, and learn by following along with the instructor.

Can I take this course without the exercise files?

Yes! If you decide you would like the exercise files later, you can upgrade to a premium account any time.

Become a member Download sample files See plans and pricing

Please wait... please wait ...
Upgrade to get access to exercise files.

Exercise files video

How to use exercise files.

Learn by watching, listening, and doing, Exercise files are the same files the author uses in the course, so you can download them and follow along Premium memberships include access to all exercise files in the library.


Exercise files

Exercise files video

How to use exercise files.

For additional information on downloading and using exercise files, watch our instructional video or read the instructions in the FAQ.

This course includes free exercise files, so you can practice while you watch the course. To access all the exercise files in our library, become a Premium Member.

Are you sure you want to mark all the videos in this course as unwatched?

This will not affect your course history, your reports, or your certificates of completion for this course.


Mark all as unwatched Cancel

Congratulations

You have completed Create a Sliding Tabbed Panel with jQuery and Dreamweaver.

Return to your organization's learning portal to continue training, or close this page.


OK
Become a member to add this course to a playlist

Join today and get unlimited access to the entire library of video courses—and create as many playlists as you like.

Get started

Already a member?

Become a member to like this course.

Join today and get unlimited access to the entire library of video courses.

Get started

Already a member?

Exercise files

Learn by watching, listening, and doing! Exercise files are the same files the author uses in the course, so you can download them and follow along. Exercise files are available with all Premium memberships. Learn more

Get started

Already a Premium member?

Exercise files video

How to use exercise files.

Ask a question

Thanks for contacting us.
You’ll hear from our Customer Service team within 24 hours.

Please enter the text shown below:

The classic layout automatically defaults to the latest Flash Player.

To choose a different player, hold the cursor over your name at the top right of any lynda.com page and choose Site preferencesfrom the dropdown menu.

Continue to classic layout Stay on new layout
Exercise files

Access exercise files from a button right under the course name.

Mark videos as unwatched

Remove icons showing you already watched videos if you want to start over.

Control your viewing experience

Make the video wide, narrow, full-screen, or pop the player out of the page into its own window.

Interactive transcripts

Click on text in the transcript to jump to that spot in the video. As the video plays, the relevant spot in the transcript will be highlighted.

Are you sure you want to delete this note?

No

Your file was successfully uploaded.

Thanks for signing up.

We’ll send you a confirmation email shortly.


Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

Keep up with news, tips, and latest courses with emails from lynda.com.

Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

   
submit Lightbox submit clicked
Terms and conditions of use

We've updated our terms and conditions (now called terms of service).Go
Review and accept our updated terms of service.