Three useful Babel presets

By Axel Rauschmayer

As of version 6, Babel supports presets, sets of features that can be enabled together. Two new presets are useful complements to babel-preset-es2015 (for ES6):

  • babel-preset-es2016 gives you the two features of ECMAScript 2016: the exponentiation operator and Array.prototype.includes().
  • babel-preset-es2017 gives you:
    • babel-plugin-syntax-trailing-function-commas: optional trailing commas in parameter lists and function/method calls.
    • babel-plugin-transform-async-to-generator: async functions. This is the one feature after ES6 that I’m most looking forward to.

The following preset is a replacement for babel-preset-es2015 on Node.js:

  • babel-preset-es2015-node only adds those ES6 plugins and transforms whose functionality is missing from Node.js (very few in the latest versions).

More information:

Source:: 2ality

30 Learning Resources For Mastering Angular 2

By Danny Markov

30-angular-resources

Angular 2 is a vast and complex framework with a never ending learning curve. To help you grasp more of its many features, we’ve curated a list of 30 free learning resources that cover it all – from the quickstart guide to specific details and best practices.


Let’s first quickly go over the available guides and tutorials on the official Angular website. There are a bunch of different resources there and we decided it’s a good idea to explain them.

QuickStart (TypeScript version)

Angular2 apps can be written in TypeScript, Dart, or good ol’ vanilla JavaScript. There are separate versions of the official docs for each language, but the TypeScript one is by far most detailed, as this is the recommended technology to use.

This will be the starting point for most beginners to Angular2. It includes setting up a work environment and running a basic Hello World app. Don’t be fooled by its name, you will need a good hour or two to finish this QuickStart.

QuickStart (Vanilla JavaScript version)

A much simpler version of the TypeScript QuickStart. Since it is written for vanilla JavaScript this tutorial doesn’t require a complex work environment and setup, so it goes straight to the framework itself and some of it’s main concepts.

Tour of Heroes

Tour of heroes is a much more detailed tutorial than the QuickStart. It goes through the process of building a Single Page App, step by step, covering many of the must-know Angular2 features. There are TypeScript and Dart versions, but no vanilla JS.

Advanced Documentation

Here the Angular team offers over 15 standalone tutorials, each doing a very in-depth look into an important topic. You can learn about Angular animations, the lifecycle of components, the navigation router, and many other core features.

Cookbook

A collection of code snippets and quick solutions to common challenges. Here you can find a chart of the differences between Angular 1 and 2, a FAQ section on NgModules, and solutions for form validation among other helpful tips and guides.


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Now let’s look at some tutorials and articles written by the community. We’ve tried to include only publications that are fairly new, making them compatible with the changes in recent versions.

Upgrading Apps To Angular 2 Using ngUpgrade

A well-written article that covers everything you need to know about upgrading old Angular 1 apps to the new framework. In it you can see what Angular2 does better, which aspects of an app need the most radical changes, as well as practical code snippets to get the job done.

Router Introduction: Child Routes, Auxiliary Routes, Common Pitfalls

This tutorial focuses on the new 3.0 router component, and explains the whole process needed for configuring it correctly. The author has done a great job explaining what Single Page Apps are, how they work, and how to route them in a robust and secure way.

Ahead-of-Time Compilation

The new Angular2 compiler improves the performance of applications dramatically by taking full advantage of JavaScript Virtual Machines. In this blog post you can learn about Just-in-Time and Ahead-of-Time compilation, their pros and cons, and how to implement them.

Styling Angular 2 Components

A more beginner-oriented lesson looking at different techniques for adding CSS styles to components. It shows you how to use component inline styles, style urls, and template inline styles, and explains the advantages behind each one.

Web Workers In Angular 2

Web workers are great for doing asynchronous tasks that don’t block the UI JavaScript, something very important for Single Page Apps. Here you can learn how to run Angular apps or components as web workers, allowing them to function in the background, independent from the main app thread.

Angular Router: Declarative Lazy Loading

Angular apps tend to get really big, and at some point the source files become too large to be loaded at once. Lazy loading allows us to speed up application load time by splitting it into multiple bundles, and loading them on demand.

Dependency Injection In Angular 2

A deep dive into the greatly improved Angular2 dependency injection system and the different approaches behind the old and new DI. This article also has a second part, that further explains the host-child relationship and the visibility of dependencies.

How does Angular 2 Change Detection Really Work ?

The Angular2 change detection mechanism is much more transparent and easier to reason about than its equivalent in Angular 1. However, there are still situations where you need to know exactly whats going on under hood.

Building an Angular 2 Application for Production

Angular is a very powerful and complex framework, and it’s not surprising that it’s footprint is also quite large. In this blog post you can learn various techniques, such as Tree-shaking and minification, that will drastically reduce the size of your final app.

Taking Advantage Of Observables In Angular 2

Observables in Angular 2 can be used for handling asynch code as an alternative to Promises. They are a vast and complex topic, but this two-part tutorial does a great job of introducing them and showcasing their many use cases.

Communication Between Components & Components Design

An interesting take on design patterns for building Angular components. The article goes through the components of a YouTube music player app and the relationships between them, with lots of code examples and explanations.

Optimizing NgUpgrade Bundle Sizes

NgUpgrade is meant to bridge the gap between Angular 1 and 2 by allowing code from both frameworks to co-exist in the same app. This can greatly increase the size as both versions need to be included. You can learn how to reduce that extra footprint in this quick tip.

Three Ways to Test Angular 2 Components

In this article you will learn three different techniques that you can use to thoroughly test Angular 2 components. They are isolated testing, shallow testing, and integration testing. All three have their strengths and weaknesses and are best applied in certain scenarios.

Protecting Routes Using Guards

Protecting routes is a very common task when building applications, as we want to prevent our users from accessing areas that they’re not allowed to access. Angular 2’s router provides a feature called Guards that tries to solve exactly that problem.

Debugging Angular 2 Applications

This guide gives a comprehensive overview of the various ways you can debug an Angular 2 applications using tools such as the Chrome DevTools, Angular Augury, simple JSON pipe filters, and the console itself.


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Since we know many developers prefer interactive lessons, here are a couple of places where you can find excellent code walkthroughs and general Angular talks.

Egghead.io

Egghead.io is one of the most popular and recommended sources for learning Angular. Although many of the lessons are for pro members only, there are still lots and lots of awesome free lessons you can watch.

Adventures in Angular

Adventures in Angular is a weekly podcast dedicated to the Angular framework. The panel cover a wide array of topics and it’s probably the best place to get Angular news. The archive contains over 110 episodes, each at least 30 minutes long.

Angular 2 from Scratch

Awesome one-hour-long course covering most of the basics. Although its beginner-oriented there are lots of things everyone can learn from this video in therms of project management and workflow.

Ajden Towfeek

A YouTube channel with lots of screencasts on web development and programming, with a focus on Angular 2 and its ecosystem of related technologies, tools, and languages.

Angular University

Another YouTube channel with a large collection of Angular tutorials, courses, code examples, and quick-tips.


Last but not least, here are some resources that didn’t fit any of the above categories, but can still be essential learning tools for any Angular developer.

Rangle’s Angular 2 Training Book

The only completely free book on Angular 2 that we could find. It covers the most important Angular 2 topics, from getting started with the basic toolchain, to writing applications in a scalable and maintainable manner. You can read it in the web browser or download it as an eBook (PDF, Mobi, ePub).

TypeScript in 30 Minutes

Although you can technically write Angular 2 in vanilla JavaScript or Dart, TypeScript provides by far the best experience with the framework. Using this tutorial you can get started with the language and learn most of it’s important features.

Style Guide

The offical style guide for the framework. Contains a ton of syntax and formatting recommendations, as well as general best practices. It’s very detailed and long, but knowing Angular’s enterprise nature, you’ll probably need to go through it at some point.

Built With Angular 2

Learn from other people’s experiences with the framework by checking out this large collection of open-source applications and experiments, all developed in Angular 2.

Angular 2 Final Q&A

An interview and Q&A with the creators of the framework, right after the release of Angular 2 Final. A great place to hear more about the project and its upcoming features straight from the horses mouth.

Source:: Tutorialzine.com

Freebie: 5 Beautiful Bootstrap Headers

By Georgi Georgiev

5-freebie-beautiful-headers

In this post we present to you a collection of five templates for headers and navigation bars. We’ve created them using Bootstrap 3, following all the best practices for working with the framework. The templates are ready to use and easy to incorporate in any existing design.

The Headers

To help you save time, we’ve created five different designs, that you can choose from. They are simple, fully responsive and work great on mobile devices.

Blue Header

Our headers can be used as part of an existing design, or can be customized easily if you have experience with Bootstrap. For some of the templates, we’ve used fonts from Google Fonts, the built-in Glyphicons set, and images from Pexels.com.

Header Nightsky

Header Nightsky

How to use

To use any of the templates from the demo, follow these simple steps:

  1. Grab the zip archive from the Download button near the top of the page and extract it.
  2. Open the .html file for the template you want, copy the code inside and paste it in your project.
  3. The styles are located in separate CSS files for each design. You can find them in the /assets/css/ folder.

Free for Commercial Use

You have all rights to customize and use these templates. They are 100% free and can be implemented in both personal and commercial projects, no attribution required (our license page). Enjoy!

Source:: Tutorialzine.com