In my drupal config I have created a video page, which I'm using to create video titles.
I also created a course page, which will be displaying all the video titles available in that course using views and node reference combination. It only displays video title list.
Now,
Take a look here
http://www.lynda.com/home/DisplayCourse.aspx?lpk2=65713
You see the video titles are arranged in a chapter - wise manner, using javascript to hide/show chapter title.
I want to implement a similar functionality in my drupal site. If it is not possible with views thats ok, but I need a way to implement the javascript and chapter title in the course page. I want to keep the layout same as much as possible.
Even if I have to manually enter/edit the code in the body, I don't care as long as I have the functionality.
If you don't want to write the jQuery and are satisfied with the "accordion" effect see http://drupal.org/project/views_accordion
A demo of views accordion can be found on http://manueg.okkernoot.net/ (See "latest thoughts" in the main content area). This is integrated with views so all you need do is to make the correct video title the accordion title.
You can probably theme the accordion too to get the desired user interface.
If you have implemented the markup, the javascript effect will be pretty easy to make.
You just need to apply a click handler on the chapters and hide/show the content. jQuery that is included in Drupal makes this quite simple and easy.
For the markup, it will probably be easier to do in a custom module, since you need a very specific ordering, and need some specific info on the chapter as well as the pages.
Update:
You should consider using node relationships, and use two content types. Especially if you want more info for each chapter like a image, teaser text etc.
Related
I noticed on youtube that replies to each comment are inside a <div id="replies">. So the same id is used for every comment reply group.
When is it a good practice to give same ids to multiple similar elements?
I know ids should be unique, that's why I'm wondering about this.
To check it, go to a youtube video, inspect and select the reply area of a comment. Optionally, Ctrl+F in inspect and search replies.
YouTube uses web components which might be the reason there are multiple of the same IDs. Web components are encapsulated chunks of HTML, javascript, and CSS that you can drop into your pages. You can read more about them here: https://www.polymer-project.org/
So my thinking of why YouTube specifically has multiple of the same ID is that the replies component itself has an ID of replies and is being targeted on a component level rather than a global.
I hope this makes sense? Even if it doesn't, try to avoid ID's that aren't unique like the others mentioned.
One of the reason YouTube can have duplicate IDs, completely invalid looking html and still get away with it, it's because they are generating dynamic content. Remember, even though it is incorrect, the browser will render it just fine. They are not using the ID to mark a unique element, but more as metadata.
Note that Youtube uses custom html tags that I assume helps them reuse code for not just the website, but also for their app.
Read more about custom elements
Update: Just wanted to show an example on how generating content through an application can help you get away with things that could otherwise be a problem.
Writing Inline css is not recommended mainly because it becomes impossible to maintain the larger the css becomes. However, you can code it in an external file during development, then compile it to be inline using an application and have none of the headaches.
See example
newbie question.
I've read some of the W3Schools, I also read a lot from other sources on the internet, however I can't find what I need, and I'm sure it's quite simple to you.
I'm using ASP.Net, and I want to add to my website, multiple items, which every item hold a picture, and some other information, including links. I'm pretty sure I don't need to write the code for every item in the HTML source, and I don't know exactly how to implement my this.
The basic idea is that my items will be imported from a Database that I create in visual studio, and I want to style my webpage so they would appear in a certain formation, I thought I might need to use Javascript or CSS for this, hope I'm not mistaken.
Javascript isn't some sort of magician that will render all your stuff on its own. However, you can use it to attach a template to every of your items.
What you have to do is :
Create a base HTML template for 1 of your item that can be applied to all of them
Create a Javascript function that will attach thoses CSS classes and HTML attributes to every element out of your DB (or you could use a templating frameork .. since there's a lot of them I'll let you look for it on Google. It's pretty easy to use)
On page load or whatever event you want to bind on, you call your function which will attach the CSS and HTML to every element out of your DB and will render it on your page
Enjoy what you've done.
I hope this helps. Good luck ! ;)
I am working on a simple Cordova app with about 4 page types and I am trying to think through which is the better way to handle the inner HTML templates.
Hidden HTML hard coded into the HTML files that is hidden and populated/revealed by my JS.
Using a JS template system and appending and removing from the DOM.
I feel that appending all that to the DOM for a page is inefficient when I could just update the sections that change. But perhaps an append is lightweight enough where I shouldn't worry about it.
There are a number of ways you can do it. In terms of load on the browser. That is hard to say. From your question it is hard to know what is in these pages, what are you displaying, is it live data, static html etc.
When you first plot out an app, if you are from the old class of building multiple page websites, it can be a little concerning as to how well your app/page will run with all those pages crammed in to one, and all that data plus code.
The answer is, amazingly well. If done properly in modern browsers, and for example Ipads the app will run to near native performance.
The options you have are
Map all the pages into one HTML document. Hide each page content using css display:none, flip them into view using css animation, fading or just display:block.
Use a javascript routing library to map urls to blocks of code that deal with each page, this makes mapping out your app much easier, and means that buttons can just link to your pages, like a real website. see http://projects.jga.me/routie/
Building all the page templates into one page can make it hard to code, as the page becomes enormous, consider breaking the inner content of each page into separate files, you can then give each page holder a url and use a small xhr request to load the page on-the fly, once loaded you can cache it into memory or even local-storage, depending on whether you remove it when it is closed or keep it hidden.
In my experience you can put an enormous number or nodes into one page and have very little speed drop, bear in mind if you use something like jquery and do a lot of $(".page > .page1 > .items li") your going to have a slow app.
Tips
Use element ID's everywhere document.getElementById(..) is 100's of times faster in a loop that $(...)
cache elements when you find them, if you need them later store them in a memory cache.
keep for loop inner code to a minimum.
use a decent click touch libary like http://hammerjs.github.io/ and delegate all the events of the body tag or at least on each page.
If you need to touch the server, load data, think dom first, device second server later. A good app is a responsive app, that responds to the user instantly.
I know this has been posted a while ago, but for the sake of the users I am going to add my answer.
I completely agree with MartinWebb but my answer will shed some light on the results of his options. I am currently working on a similar project. Please note that this answer pertains to cordova (previously called phonegap) specifically. My app has about 5 pages with +-20 different components (input's, div's, h1's, p's, etc.). This is what i tried and the result of each:
jQuery was my first option, mainly because it is easy to use and reduces the amount of code required to accomplish a said goal. Result: First time I tried this approach I though I would spice it up with animations and transformations. The result of this was a very unresponsive app. I removed the animation and transformation, however due to the nature of my application I required multiple dynamically added components and jQuery just wasn't up for the task.
Css display:none and visible:hidden was my next option. I used javascript's dom to display certain div's. Result: This works if your not planning on switching many div shortly after one another eg. a simple menu. It quickly became apparent that this wasn't going to work. Also this does not eliminate my need for the dom. Remember document.getElementById('menu').style.display = "none"; is still part of the dom. This as a solution, for me, is poor. There is a reason that var menu= document.createElement('div'); is part of the language. Which brings me to my last option.
Building a page 90% on javascript's dom was my last option. Logically I could not see how 600 lines of code cold trump one .innerHTML or .style.display = "block"; but it did. Result: It was by far the most responsive of all the solutions.
I'm not saying that all webpages should be coded with dom appending, but as I stated previously, for a cordova app of a few pages (<6), with a few components a javascript dom appending approach would be best. It takes longer to code, but you will be rewarded with control and efficiency. I would suggest coding the backbone of your app in html and populating and controlling with javascript's dom.
Best of luck.
The first option, <div>s with display:none; would be more efficient by a small margin, but you can get the best of both worlds by compiling your JavaScript and templates together into a single file using something like browserify or require.js.
I'd like to know how can I create a system using HTML, CSS and jQuery that simulates a multipage website using a single HTML page. One example of this feature is used in this website.
Is there a plugin to create this effect and transition?
the website link you have given here is actually a single page. There are many plugins to achieve what is happening there. one of them is
reveal.js it also has an online presentation creator present here
other one is impress.js but IE isnt supported
My webapp uses both Rails and JS and I would like users to be able to embed the images they upload to any blog/site.
What do I need to know, from a development point-of-view to allow me to create the functionality that generates an 'embed' link. It can be either a link like YouTube does, or a JS snippet or anything.
Just want to get a high-level overview of what I need to be able to do and how to proceed.
Thanks.
I would try using iframe. I created a widget which used javascript and I put it all into a single html file hosted on my website. Then I gave away an iframe snippet like this for example...
<iframe src="http://mywesbite.com/myWidget.html"></iframe>
The user can simply place the iframe snippet into their website and that's it!
I'm a little bit late to the party here, but I just wanted to add to Jacob's answer.
You can easily allow the user to customize the embedded content (perhaps choose light on dark vs. dark on light text to more closely match the page's environment/design) by using query params within the iframe src:
<iframe src="http://___.com/widget?theme=light&size=large"></iframe>
of course you'd probably want to build a UI to allow the user to make these distinct changes... you can't expect average user's to do that by hand:)
Vimeo's UI for customizing embedded videos is pretty nice if you want a best case scenario.