5 Features To Watch Out For in Angular v4

“5 Features To Watch Out For in #Angular v4” by @scotch_io #javascript #AngularJS

  • They include but not all:

    Angular v4 is in RC; this means you can start using it in your project hoping that no breaking changes will be released at final.

  • With Angular v4 (RC), you can use the syntax to handle such case:

    Let’s have a look at a possibly realistic example:

    We are simulating an HTTP async request with Observable that returns a user payload if successful.

  • Now, TypeScript allows you to explicitly say a variable can have any of those types:

    The above example simple says:

    This feature is now compliant in Angular (v4), so you could do stuff like this:

    Server-side rendering is the act of spitting the same HTML content in virtual DOM to the server so that they are rendered appropriately by the browser on request.

  • The project was maintained entirely outside Angular, but from Angular v4 forward, Universal will become a core Angular module.
  • Angular v4 ships flattened versions of modules in the ECMAScript Module format.

By now, most probably, we have come in peace with the fact that Angular will be rolling out features using semantic versioning. This means…
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MEAN Stack Tutorial MongoDB ExpressJS AngularJS NodeJS (Part III)

#angularjs Tutorial for Beginners With #nodejs #ExpressJS and #mongodb #javascript Part I

  • We are going to build a full stack Todo App using the MEAN (MongoDB, ExpressJS, AngularJS and NodeJS).
  • TL; DR: NodeJS has been built from bottom up a non-blocking I/O paradigm, which gives you more efficiency per CPU core than using threads in other languages like Java.
  • But, now you can found it in smartphones, servers, robots, Arduino, RaspberryPi… Thus, it does not matter what technology you use to build web applications, you need to be familiar with Javascript.
  • Programming languages that are blocking (Java, Ruby, Python, PHP, …) overcomes concurrency using many threads of execution while JavaScript handles it using non-blocking event loop in a single thread.
  • These are the changes added to perform the remove functionality:

    Do the same for the details Template

    And also in the details controllers

    When we remove elements from the todos array they also disappear from the DOM.

Adrian Mejia blog about programming and software engineering. Featuring MEAN stack (AngularJS, NodeJS, MongoDB and Express), BackboneJS, RESTful APIs, Algorithms and data structures.
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Single Page Apps with AngularJS Routing and Templating – Hell’s Kitchen

Single Page Apps with #AngularJS Routing and Templating

  • Let’s add the module and controller to our HTML so that Angular knows how to bootstrap our application.
  • Since we have our module and controller set up and we know that Angular is working properly, we will start working on using this layout to show the different pages.
  • is an Angular directive that will include the template of the current route (/home, /about, or /contact) in the main layout file.
  • Since we are making a single page application and we don’t want any page refreshes, we’ll use Angular’s routing capabilities.
  • This way, each part of our application will use its own view and Angular controller.

Single page apps are becoming increasingly popular. Sites that mimic the single page app behavior are able to provide the feel of a phone/tablet application. Angular helps to create applications like this easily.
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AngularJS 2.0 From The Beginning

#AngularJS 2.0 From The Beginning - #ngForm - Day 16 by @debasiskolsaha cc @CsharpCorner

  • So far, we have discussed about data binding, input properties, output properties, pipes, viewchild, Directives, Services including routes and template based form binding, using ngForms in Angular 2.0.
  • Now, in this article, I will discuss how to create model based form, using Angular form module in Angular 2.0.
  • In my previous article, I already discussed about the template driven form binding in Angular 2.0.
  • Now, in this article, we will discuss about the Model Driven or Reactive Form binding in the Angular 2.0.
  • To begin, we must first ensure that we are working with the right Directives and the right classes in order to take advantage of procedural forms.

In this article, we will discuss model based form binding in Angular 2.0.
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‘angularjs’ tag wiki

  • AngularJS (a.k.a. AngularJS 1) is an open-source JavaScript framework.
  • Its goal is to augment browser-based applications with Model–View–Whatever (MV*) capability and reduce the amount of JavaScript needed to make web applications functional.
  • AngularJS (also known as AngularJS 1) is an open-source JavaScript framework for building CRUD-centric Ajax-style web applications.
  • Its goal is to shim the browser to augment the HTML vocabulary with directives useful for building dynamic web applications.
  • AngularJS was developed and is maintained by Google, and is used internally by 1600+ applications.


AngularJS (a.k.a. AngularJS 1) is an open-source JavaScript framework. Its goal is to augment browser-based applications with Model–View–Whatever (MV*) capability and reduce the amount of JavaScript needed to make web applications functional. These types of applications are also frequently known as single-page applications (SPAs). It is entirely distinct from its successor, referred to simply as Angular, with its own tag, see [tag:angular2].

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computer solutions: JSON Web Token Tutorial: An Example in Laravel and AngularJS

  • It comprises a compact and URL-safe JSON object, which is cryptographically signed to verify its authenticity, and which can also be encrypted if the payload contains sensitive information.Because of it’s compact structure, JWT is usually used in HTTPheaders or URL query parameters.A JWT is represented as a sequence of base64url encoded values that are separated by period characters.JSON Web Token example:The header contains the metadata for the token and it minimally contains the type of signature and the encryption algorithm.
  • This JWT Header declares that the encoded object is a JSON Web Token, and that it is signed using the HMAC SHA-256 algorithm.Once this is base64 encoded, we have the first part of our JWT.In the context of JWT, a claim can be defined as a statement about an entity (typically, the user), as well as additional meta data about the token itself.
  • However, if we want to add an additional layer of protection, we can encrypt the JWT payload itself using the JSON Web Encryption (JWE) specification.Of course, if we want to avoid the additional overhead of using JWE, another option is to simply keep sensitive information in our database, and use our token for additional API calls to the server whenever we need to access sensitive data.Before we can see all the benefits of using token authentication, we have to look at the way authentication has been done in the past.Because the HTTP protocol is stateless, there needs to be a mechanism for storing user information and a way to authenticate the user on every subsequent request after login.
  • We can easily use the same token for fetching a secure resource from a domain other than the one we are logged in to.A browser or mobile client makes a request to the authentication server containing user login information.
  • The only thing we have to do is calculate the HMAC SHA-256 to validate the token and parse its content.In this tutorial I am going to demonstrate how to implement the basic authentication using JSON Web Tokens in two popular web technologies: Laravel 5 for the backend code and AngularJS for the frontend Single Page Application (SPA) example.

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AngularJS, Angular and Angular v4

Recommended post 💥 “#AngularJS, #Angular and Angular v4 by @Foxandxss #javaScript
”

  • The old and new Angular products need names that are fixed and independent of the version number.
  • With semantic versioning, you can tell if a new release is an easy install, with no breaking changes, simply by looking at the version number.
  • The downside is that breaking changes are inevitable and, therefore, new releases of Angular are bound to have version numbers like , , , etc.
  • Semantic Versioning (SemVer) is a convention that dictates how the version number changes for each new release of a library.
  • A breaking change means that upgrading to the new version of the library might cause your application to behave in an unexpected way that contradicts previously documented behavior or fail outright.

Angular tips blog
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