Post on 27-Jan-2015
description
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Responsive Web Design
Tejaswita Takawalettakawale@equalexperts.com
Akshada Yadavayadav@equalexperts.com
www.equalexperts.com
The scenario today
• Multiple devices (smart phones, tablets etc.)
• Faster connectivity (3G, 4G)
As a result:
Websites are accessed on multiple devices.
What’s needed:
Elastic versions of websites which will FIT and be USABLE on multiple devices.
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Building Multiple Sites
You could create versions of your website for each device and resolution…
But would that be possible, or practical ?
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Problems with multiple versions
Managing multiple codebases
Multiple content management
Learning curve for platform specific technique
Handling multiple URLs impacts:
• Content reliability
• SEO
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Think Different !!!
Have Single Solution for multiple devices
Design your site so that it responds to the user screen resolution.
What we have:
• HTML 5 / CSS 3
• Media queries
• Browser support
• Good network bandwidth
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Solution: Responsive Web Design
• Term introduced in 2010 by Ethan Marcotte
• Responsive Web Design is the approach which suggests that design and development should respond to the user’s behaviour and the environment screen size, platform and orientation.
• Uses a set of techniques and ideas.
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Techniques for RWD
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Anatomy of a page layout
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Make it FluidFluid – The layout shrinks / expands depending on the screen size & resolution.
Aspects of Fluid design:
• Fluid Grids
• Flexible images
• Flexible Containers, Margins & Padding
Formula: Target / Context = Result
Target – the size we want to be displayed by default
Context – depends on the attribute under calculation (usually the parent element)
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Adapt the content
Adaptive – The content becomes usable / user friendly on each device.
Aspects of Adaptive Design:
• Content adaptation
• Media Queries
• Image Swapping
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Responsive Design
Combine Fluid Design with Adaptive Design & Content to create a truly responsive web design.
Aspects:
Fluid Grids
Flexible images
Media Queries
Content Adaptation
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But this is not enough…
Some issues to be resolved:
• “It takes time until I actually see something on the site”
• “Though I’m not processing scripts, they’re getting downloaded on my phone slowing it down further”
• “Device has high screen resolution but doesn’t support CSS3”
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SolutionsProgressive Enhancement : PE
Mobile first approach:
• Create design for the least capable device and the slowest connection speed
• Build up from there to larger breakpoints for faster connections and add decorations for higher screen sizes
Conditional JavaScript loading:
• Load JS only if the rendering device is capable
• Getting something on screen as soon as possible really enhances the user experience
http://coding.smashingmagazine.com/2009/04/22/progressive-enhancement-what-it-is-and-how-to-use-it/
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Solutions
RWD + Server Side Detection : RESS
• Control the markup and CSS at server side based on the device capability.
• Relies on device library on the server to detect the device and return its capabilities.
• Helps serving the appropriate user journey.
• Example: WURFL
Hybrid Model = PE + RESS
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Considerations for RWD
• Context sensitive interaction (e.g. http://dressresponsively.com/)
• Mobile first approach
• Performance
Network considerations
Page weight
Conditional and Lazy loading (e.g Gmail)
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Lazy Loading• Load it only when the user requires the content on his
device
• Falls within the Progressive Enhancement school of RWD thought
• Requires Server Side Detection<script id=“lazy”>
//Make sure to replace (or strip out) comment blocks in your JavaScript first.
/*JavaScript of lazy module*/
</script>
<script>
function lazyLoad(){
var lazyElement = document.getElementbyId(‘lazy’);
var lazyElementBody = lazyElement.innerHTML;
var jsCode = stripoutCommentBlock(lazyElementBody);
eval(jsCode);}
</script>
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Thinking Native ?
Evaluate Native vs RWD on the basis of:
• Efforts – Time and Money
• Browser support for web apps
• Device capabilities
• Performance
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Help at hand…
RWD frameworks:
• Bootstrap
• Skeleton
• Foundation
JavaScript frameworks:
• Respond.js
• Modernizr.js
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References
http://alistapart.com/article/responsive-web-design
http://coding.smashingmagazine.com/2011/01/12/guidelines-for-responsive-web-design/
Responsive Web Design – Ethan Marcotte
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Thank You !!!
Tejaswita Takawalettakawale@equalexperts.com
Akshada Yadavayadav@equalexperts.com