Código na unha

1.jQuery Tabbed Interface / Tabbed Structure Menu Tutorial


Postado por Fernando Schimit - Fox Creative

Introduction

One of the main benefits of using a popular java script library, such as jQuery, is the incredible number of available plug-ins that will kick-start any development project.
Today we are going to build a custom gallery that scans a folder of images and outputs a slick gallery, utilizing PHP, CSS, jQuery and the jQuery Lightbox plug-in.
There is no need to download the plug-in – I’ve included it in the demo files, so grab them and get on reading.

The XHTML

We start off with our XHTML front-end.

demo.php

And that is basically all there is to it. Note the highlighted area – this is where we put our PHP code, that will generate the gallery images. Now lets go through how this is done.

The PHP

The idea is simple – our PHP back-end is going to scan a folder that we’ve set up with our gallery images, and turn it into a fancy CSS & jQuery gallery. The great thing about this strategy is that it is incredibly easy to set up a gallery, and adding images to an existing one is a charm – just dump them in the gallery’s directory via FTP and it is ready to go.

demo.php

By traversing through the files in the directory and skipping the non-image files, we output some XHTML code for every image . This code (lines 28-39) consists of a div container, with a CSS class pic (and in some cases a nomargin, more on that later), and we set its background to the image file via the style attribute. We position the image in the center of the background by specifying its position to be 50% 50%. This centers it both horizontally and vertically and thus shows  only the middle part, that fits into the div container’s size. This creates a nice thumbnail, with no need of actually resizing the image.
This works best with images with smaller resolutions, so you should consider resizing those 10 megapixel photos before uploading them.
The div contains a hyperlink which is linked to the image and has a title of the image filename. Both these attributes are used by the lightBox plugin to generate the lightbox gallery. So by renaming the file, you can change the caption that shows under it.
You may wonder what is the point of that nomargin class? Every image in the gallery has a right and a bottom margin. But this means that it is not possible the last element of each row to align with the right part of the heading div and it looks amateurish. So we assign this special class, which clears the right margin for the last element on each row and gives us a proper alignment.

The CSS

Everything is set up, but we still have to give it that cool look.

demo.css

The jQuery

To make it all tick, we need to include the jQuery java script library in our page, and add the lightBox plugin. The following code was taken from the head section of demo.php:
On line 1 we include the lightbox plugin’s CSS file, which styles the lightbox that displays the images. On line 2 we include our own CSS file.
Line 4 is where we include the jQuery library from Google’s CDN. Later come the lightbox plugin itself and our own script.js file.
Now we are ready to put the finishing touch.

script.js

The lighbox() method takes an object as an optional parameter. The only reason we provide any parameters is that I changed the default location of the plugin, putting it in a subfolder /lightbox which aids for a cleaner file structure. Unfortunately the images that the plug-in uses become inaccessible and have to be provided manually.
With this our gallery is complete.

Conclusion

Postado por Fernando Schimit - Fox Creative

Web development is an area in which you have to keep up with the latest technologies and techniques, so that you are at the top of your game.  And no wonder – this is an area which changes with an amazing pace. What is the standard now will be obsolete in just a couple of years.
But changes do not come from nowhere. The early adopters are already using what we are going to use day-to-day a few years from now. One of these technologies is HTML5 – the new version of the fundamental language of the web.
Today we are making a HTML5 web template, using some of the new features brought by CSS3 and jQuery, with the scrollTo plug-in. As HTML5 is still a work in progress, you can optionally download a XHTML version of the template here.

Step 1 – The Design

Every design process starts with an initial idea which you later build upon. At this stage, designers usually go with programs such as Photoshop, to work on the details and see how it will all fit together.
After this, the design is hand coded with HTML and CSS going hand by hand, moving from designing the background, colors and fonts, to detail work on the content section.

Step 2 – HTML

It is a good time to note, that HTML5 is still a work in progress. It will remain so probably till around 2022 (I am absolutely serious about this). However some parts of the standard are complete, and can be used today.
In this tutorial, we are using a few of the tags introduced with this new version of HTML:

• header – wraps your page header;
• footer – wraps your page footer;
• section – groups content into sections (e.g. main area, sidebar etc);
• article – separates the individual articles from the rest of the page;
• nav – contains your navigation menu;
• figure – usually contains an image used as an illustration for your article.

These are used exactly as you would use normal divs. With the difference being that these tags organize your page semantically. In other words, you can present your content in such a way, that the subject matter of your page can be more easily determined. As a result services, such as search engines, will bring you more targeted visitors and thus boost your revenue (and theirs actually).
However, there are some implications in using HTML5 today. One of the most notable is the IE family of browsers, which does not support these tags (it can be fixed with a simple JavaScript include file though). This is why you should base your decision for moving to HTML5 on your site’s audience. And just for this purpose, we are releasing a pure XHTML version of this template as well.

template.html – Head section

You can notice the new at line one, which tells the browser that the page is created with the HTML5 standard. It is also much shorter and easier to remember than older doctypes. After specifying the encoding of the document and the title, we move on to including a special JS file that will enable Internet Explorer (any version) to render HTML5 tags properly. Again, this means that if a visitor is using IE and has JavaScript disabled, the page is going to show all messed up. This is why, depending on your audience, you should consider the regular XHTML version of this template, which works in any browser and is released free for all of our readers here.

template.html – Body Section

Here we use the new section tags, which divide your page into separate semantic sections. Outermost is the #page section which is set to a width of 960px in the style sheet (a fairly standard width with older computer displays in mind). After this comes the header tag and the navigation tag. Notice the href attributes of the links – the part after the hash symbol # corresponds to the ID of the article we want to scroll to.

template.html – Article

The markup above is shared between all of the articles. First is the dividing line (the best solution semantically would be an

---

line, which in HTML5 has the added role of a logical dividing element, but unfortunately it is impossible to style in a cross-browser fashion, so we will stick with a DIV). After this we have the new article tag, with an unique ID, which is used by the navigation to scroll the page. Inside we have the title of the article, two paragraphs and the new figure tag, which marks the use of images in the article.

template.html – Footer

Lastly, we have the footer tag, which does exactly what you expect it to do. At the bottom of the page are the rest of the JavaScript  includes, which add the jQuery library and the scrollTo plug-in, which we are going to use in the next steps.

Step 3 – CSS

As we are using HTML5, we have to take some extra measures with the styling. The tags that this new version of HTML introduces, are not yet provided with a default styling. This is however easily fixed with a couple of lines of CSS code and the page works and looks as it is supposed to:

styles.css – Part 1

We basically need to set the display value of the new tags to block, as you can see from the first couple of lines. After this we can style them as we would do with regular divs. We style the horizontal lines, the articles, and the navigation buttons, with the latter organized as an unordered list inside of the nav tag. At the bottom we assign the border-radius property for four different types of elements of once, which saves a lot of code.

styles.css – Part 2

In the second part of the code, we apply more detailed styling to the elements. A width for the page section, a hover property for the figure tag and styles for the links inside of the footer. There are also a few styles that are not included here, but you can see them in styles.css. Now lets continue with the next step.

Step 4 – jQuery

To enhance the template, we will create a smooth scrolling effect once a navigation link has been clicked, using the scrollTo jQuery plug-in that we included in the page earlier. To make it work we just need to loop through the links in the navigation bar (and the UP link in the footer) and assign an onclick event which will trigger the $.srollTo() function, which is defined by the plug-in.

script.js

With this our template is complete!

Wrapping it up

In this tutorial, we leveraged the new semantic features provided by HTML5, to design and code a one-page web template. You can use it for free both personally and commercially, providing you leave the back link intact. If you like this tutorial, be sure to check out our twitter stream as well, where we share the latest and greatest design and development links.


Postado por Fernando Schimit - Fox Creative