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React Native allows you to build mobile native apps with Javascript

Fcebook announced that its React Native library is now available on Github. The library allows you to build native iOS and Android applications with JavaScript and Facebook’s React library.

A framework for building native apps with React.

React Native runs JavaScript engine in a separate background thread, which communicates with the native main thread using a batched async messaging protocol. There’s a plugin for React that uses this protocol for communication.

  • With React Native your application logic is written and runs in JavaScript, whereas your application UI is fully native; therefore you have none of the compromises typically associated with HTML5 UI.
  • React introduces a novel, radical and highly functional approach to constructing user interfaces. In brief, the application UI is simply expressed as a function of the current application state.

Tom Occhino’s introducing React Native and discussing why developers at Facebook decided to create it:

The tutorial you can find here

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11 must-have plugins for extending Twitter Bootstrap

Twitter Bootstrap is one of our favourite framework for quick website prototyping. If you don’t know about Twitter Bootstrap, it’s simple and flexible HTML, CSS, and Javascript for popular user interface components and interactions. Originally created by a designer and a developer at Twitter, Bootstrap has become one of the most popular front-end frameworks and open source projects in the world. This great tool contains base CSS, grid, responsive, general styling, UI components and javascript plugins that can speed up your development process.

Twitter Bootstrap comes with many javascript plugins too but some common javascript plugins are missing.

1. Jasny Bootstrap

Jasny Bootstrap is a direct fork of Twitter Bootstrap with a number of additional components. It features controls like input masks, file upload buttons, icons, additional form styles and more.

jasny bootstrap

2. Bootstrap Select

Bootstrap favors native browser controls, which is the reason it doesn’t expose any customization options for them. However, in some projects it is useful to have customizable controls like select boxes, which is exactly what Bootstrap Select does. This plugin gives you a pretty and customizable select box which looks great in your page.

bootsatrp-select

3. Bootstrap Image Gallery

Bootstrap Image Gallery is an extension to blueimp Gallery, a touch-enabled, responsive and customizable image & video gallery.
It displays images and videos in the modal dialog of the Bootstrap framework, features swipe, mouse and keyboard navigation, transition effects, fullscreen support and on-demand content loading and can be extended to display additional content types.

Bootstrap Image Gallery

4. Bootstrap Application Wizard

It is a good practice to split long forms into smaller, contextually similar chunks. This makes them a bit easier to handle. The Bootstrap Application Wizard does that for you and more.

Bootstrap Form Wizzard

5. Bootstrap Datetime Picker

Datepicker picker to field or to any other element.

Bootstarp Date Time picker

6. Colorpicker for Bootstrap

An easy-to-use jQuery color picker for Twitter Bootstrap

Bootstap Color Picker

7. Bootstrap Tour

Bootstro.js help you to show your users a guided tour of what is what on a page. Especially, for first-time users. Alternative for bootstro.js is Bootstrap Tour

Bootstro Guide

8. Bootstrap Tag Autocomplete

This is a bootstrap plugin to autocomplete tags for contenteditable div elements. It works in the same way tagging people on Facebook, Twitter or Sandglaz works.

Boostrap tag autocomplete

9. Bootstarp Calendar

A Full view calendar based on Twitter Bootstrap

Bootsatrp Full View Calendar

10. Bootstarp WysiWig Eidtor

bootstrap-wysihtml5 is a javascript plugin that makes it easy to create simple, beautiful wysiwyg editors with the help of wysihtml5 and Twitter Bootstrap.

bootstarp wyswig

11. Font Awesome

Font Awesome gives you scalable vector icons that can instantly be customized — size, color, drop shadow, and anything that can be done with the power of CSS.

Font Awesome

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Want to make your site faster, especially on mobile?

Google today announced that its latest PageSpeed modules help render pages up to 2x faster, particularly on mobile devices

mod_pagespeed ngx+page_speed

As a major aspect of its mission to accelerate the Web, Google today announced the latest version of its mod_pagespeed (Apache) and ngx_pagespeed (NGINX) modules include new enhancements that improve performance. Google says it is seeing pages rendering up to 2x faster, especially on mobile devices.

This speedup comes thanks to two new PageSpeed optimizations (the first two) and existing PageSpeed optimizations (the last two:

  • prioritize_critical_css finds the CSS rules that are used to initially render your page.
  • The critical image beacon identifies the images that appear on screen when your page is first rendered and uses this to guide lazyload_images and inline_preview_images.
  • defer_javascript prevents scripts from running until the page has loaded.
  • convert_jpeg_to_webp reduces the size of images that are downloaded by webp-capable browsers.

This webpagetest video shows the results:

 

more informations you can find here »

How does PageSpeed speed up web-sites?

PageSpeed improves web page latency and bandwidth usage by changing the resources on that web page to implement web performance best practices. Each optimization is implemented as a custom filter in PageSpeed, which are executed when the HTTP server serves the website assets. Some filters simply alter the HTML content, and other filters change references to CSS, JavaScript, or images to point to more optimized versions.

PageSpeed implements custom optimization strategies for each type of asset referenced by the website, to make them smaller, reduce the loading time, and extend the cache lifetime of each asset. These optimizations include combining and minifying JavaScript and CSS files, inlining small resources, and others. PageSpeed also dynamically optimizes images by removing unused meta-data from each file, resizing the images to specified dimensions, and re-encoding images to be served in the most efficient format available to the user.

PageSpeed ships with a set of core filters designed to safely optimize the content of your site without affecting the look or behavior of your site. In addition, it provides a number of more advanced filters which can be turned on by the site owner to gain higher performance improvements.

PageSpeed can be deployed and customized for individual web sites, as well as being used by large hosting providers and CDNs to help their users improve performance of their sites, lower the latency of their pages, and decrease bandwidth usage.

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What is Responsive Web Design

Responsive Web design is the approach that suggests that design and development should respond to the user’s behavior and environment based on screen size, platform and orientation. The practice consists of a mix of flexible grids and layouts, images and an intelligent use of CSS media queries. As the client switches from their portable computer to ipad, iphone or any mobile device, the site might as well immediately switch and react to the client’s preferences.

Core Concepts
Three key technical features are the heart of responsive Web design:

  • Media queries and media query listeners
  • A flexible grid-based layout that uses relative sizing
  • Flexible images and media, through dynamic resizing or CSS

 

Responsive Web Design

 

 

Responsive Web Design tools for Developers

 

1. Web Designer Tools

The Google Web Designer Toos and Webflow allows you to create websites visually – you do also get access to code of course. You can create engaging, interactive HTML5-based designs and motion graphics that can run on any device

laptop-timeline

 

 

2. Frontend frameworks

Foundation / Twitter Bootstrap makes it a simple feat to create a responsive Web design framework.

Foundation

 

3. Responsive Design Testing

This tool has been built to help with testing your responsive websites while you design and build them.

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4. FitText

FitText makes font-sizes flexible. Use this plugin on your fluid or responsive layout to achieve scalable headlines that fill the width of a parent element.

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5. Responsive Slides

ResponsiveSlides.js is a tiny jQuery plugin that creates a responsive slider using elements inside a container.

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6. Adaptive Images

Adaptive Images detects your visitor’s screen size and automatically creates, caches, and delivers device appropriate re-scaled versions of your web page’s embeded HTML images.

 

7. WordPress

When it comes to maintaining a website, nothing is quite as good as having a content management system in place to handle the heavy lifting for you. WordPress allows you to set up a system to add posts and pages to a website without having to go into the code at all. The templating system WordPress uses is easy to work around for developers and designers, and if you’re really lost there are plenty of basic templates to get you started.

wordpress

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Google Announces Android 4.4 KitKat

KitKat, made Android amazing for everybody.

Today Google announced details of its long-awaited Android 4.4 KitKat operating system for the first time, going beyond just the candy bar branding. The KitKat update to the Android OS brings some visual changes, including more immersive graphics, as well as deeper integration with Google’s intelligent assistant, Google Now, among other changes and improvements. KitKat will debut on the long-rumored Nexus 5 smartphone that Google also showed off today at a small meeting with reporters in San Francisco.

As Google’s Android chief Sundar Pichai put it, KitKat will be one version of the OS that will run across all smartphones. The goal is to bring Android to the next billion people and the way to do it is to make KitKat use less memory than previous Android versions.

 

 

android-kitkat

Top 10 new features

  • User interface tweaks
  • New dialler, caller ID
  • Unified Hangouts messaging app
  • Smarter Google Now integration
  • Better support for cloud printing
  • Chrome WebView
  • Step detector, counter
  • Enhanced support for connectivity options
  • Better accessibility options
  • Screen recording

 

more informations you can find here »

What’s New for Developers

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