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Removing CSS rules that hide elements


From:

Create a Sliding Tabbed Panel with jQuery and Dreamweaver

with Chris Converse

Video: Removing CSS rules that hide elements

So the idea behind progressive enhancement is that we want to make sure that we're not hiding any content with CSS in case the user doesn't have JavaScript enabled. So what will happen is the user won't be able to actually see the content because the JavaScript is not enabled and we can't actually show or hide individual pieces. So the first thing we'll want to do is set the CSS properties in the default state to hide elements we don't want to see and make sure that everything else shows. So over in the CSS Styles panel, let's scroll down until we see .sp .tabs.
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Watch the Online Video Course Create a Sliding Tabbed Panel with jQuery and Dreamweaver
1h 6m Intermediate Oct 11, 2012

Viewers: in countries Watching now:

A tabbed panel interface is a classic feature to incorporate in your website design, but they're usually static elements. This course shows how to build a dynamic sliding tabbed panel from scratch using a combination of HTML, CSS, jQuery, and the tools in Dreamweaver. Author Chris Converse leads you through the process from start to finish, from building the containers to styling the text, tab, and panels, and adding click events to make the tabs interactive. He also shows how to incorporate progressive enhancement techniques, so visitors who don't have JavaScript, for example, can still access the content.

Topics include:
  • Creating the main panel and tab containers
  • Adding content to the containers
  • Adding CSS styles to the text and tabs
  • Adding the jQuery $(document).ready() function
  • Assigning click events to the tabs
  • Setting an autostart on page load
  • Creating custom graphics for the panels
  • Assigning custom classes to the HTML elements
  • Reassigning CSS rules with JavaScript
Subjects:
Developer Web
Software:
Dreamweaver jQuery
Author:
Chris Converse

Removing CSS rules that hide elements

So the idea behind progressive enhancement is that we want to make sure that we're not hiding any content with CSS in case the user doesn't have JavaScript enabled. So what will happen is the user won't be able to actually see the content because the JavaScript is not enabled and we can't actually show or hide individual pieces. So the first thing we'll want to do is set the CSS properties in the default state to hide elements we don't want to see and make sure that everything else shows. So over in the CSS Styles panel, let's scroll down until we see .sp .tabs.

Let's double-click this rule to edit it. Let's come into the Block properties and let's set the Display of this item to none and then click OK. Next let's scroll down and find the .panel_container .panels. This is where we actually set the absolute position property. Let's delete this, and let's find the next rule .sp panel_container panel. Let's delete that as well. So now in the Design view, if I scroll up and down here, I can see Dreamweaver showing me what the users will see if they don't have JavaScript enabled.

So each of the panels will still be visible. They'll have their background graphics and all of this CSS treatments we gave them, but they won't see is the user experience that lines the panels up in a row, and an animated interactive user experience. So now that we've removed all of the CSS properties that inhibit users from seeing content without JavaScript, in the next movie we'll add the CSS properties back in with JavaScript so that we know they do have JavaScript and then we can invoke our user experience.

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