$watch how the $apply runs a $digest. UPDATE: This post is meant for beginners, for those that just started to learn Angular and want to know how data-binding works. If you already know how to use Angular properly, I highly suggest you go to the source code instead. Angular users want to know how data-binding works. There is a lot of vocabulary around this: $watch, $apply, $digest, dirty-checking… What are they and how do they work?
Here I want to address all those questions, which are well addressed in the documentation, but I want to glue some pieces together to address everything in here, but keep in mind that I want to do that in a simple way. Let’s start from the beginning. The browser events-loop and the Angular.js extension Our browser is waiting for events, for example the user interactions. Angular extends this events-loop creating something called angular context (remember this, it is an important concept). The $watch list Every time you bind something in the UI you insert a $watch in a $watch list. File: index.html. Learn to Build Modern Web Apps with the AngularJS Tutorial | Thinkster.
Angularjs. Using Yeoman to Create a Web Application. ← Big Data Roundup | Meteor Web Application Creation → A guest post by Jonnie Spratley, who currently works for GE as a UI Developer on the Industrial Internet Team building user interfaces for next generation products, and teaches a variety of programming courses at AcademyX. In this post we will discuss using Yeoman, which is a client-side stack that contains three tools and frameworks to help developers quickly build beautiful and scalable web applications. These tools include support for linting, testing, minification and more.
Read Yeoman: Optimizing Your Workflow in AngularJS for more about Yeoman. Yo is used to generate things, from other generators to files and more.Bower is used for dependency management, downloading and installing .js components.Grunt is used for task management such as building, previewing and testing. How To We are going to use all of these tools described above to create an AngularJS application. 1. . $ npm install -g yo grunt-cli bower 2. 3. A. B. C. D. E. F. G. Angular/protractor. AngularJS SEO with Prerender.io. AngularJS is an excellent framework for building websites and apps.
Built in routing, data-binding and directives among other features enable AngularJS to completely handle the front-end of any type of application. The one pitfall to using AngularJS (for now) is Search Engine Optimization (SEO). In this tutorial, we will go over how to make your AngularJS website or application crawlable by Google. The Problem Search engines crawlers (or bots) were originally designed to crawl HTML content of web pages. If you are fully utilizing AngularJS, there is a strong possibility that you will only have one real HTML page that will be fed HTML partial views asynchronously. The Solution Rest assured, Google does have a way of indexing AJAX applications and your AngularJS app can be crawled, indexed and will appear in search results just like any other website.
What We’ll Be Building Our application will be able to be rendered by Google bot and all his friends (Bing bot). How It Works About Prerender.io.
Authentication in AngularJS (or similar) based application. | Espeo. Implementation of the concept described below and also a demo application is available here: Hello again, today I would like to write a little bit about how am I handling authentication in an application front-end running inside web browser, using AngularJS. Traditional server ‚login form’? Well… no, thank you. At the beginning, I did not realize that traditional and commonly used form based authentication does not suit my client-side application. The major problem lies in a key difference between traditional – server-side, and client-side applications.
Let’s take a look at a sample server-side web application flow of events: Same application, but different flow: Now let’s see how it is in client-side application, running inside a web browser: OK, so let’s try other way around: Guess what? Let’s try to adapt. Of course everything is doable, but after investigation, I did something else. AngularJS has a $http service. The goal is to be able to: Popular Modules - AngularJS Modules, Plugins and Directives. Angular-app/angular-app. Meliaxford/angular-client-side-auth. Userapp-angular/angularjs.userapp.js at master · userapp-io/userapp-angular. Witoldsz/angular-http-auth. Why does Angular.js rock? Let’s see if we can discover why :) Angular.js is a MV* (Model – View – Whatever) Javascript framework which is maintained by Google which excels in the creation of single-page-applications or even for adding some “magic” to our classic web applications.
I could spend all the day writing about why you should try Angular.js in your new project, but I feel that it would be better if we see it in action. Data binding and scopes The first question that usually comes to mind is: Does it support data binding? Let’s see an example of Angular.js’ way of data binding: In this little piece of code, there are a few things to explain but before that, I want you to get familiarized with the code: Try it Insert your name: Echo: NOTE: Don’t worry too much about the ng-app thing at this moment. As you see, what we write in the input, is echoed after it. Ok, but where are we saving that user.name? Alright alright, that wasn’t hard, but…. The idea is something like: Let’s see a complex example: See it Hello, World. Deal with users authentication in an AngularJS web app. This post is meant to share some thought about the main issues related to the user’s authentication in an AngularJS web app. This post is about how to maintain, and recognize, the status of authentication of an user (that is, if he’s logged in, or not) between the different routes of a web application.
Moreover it also explains how to handle the case of a not authenticated user, who is trying to access to a page, that requires the user to be logged in. Before going into the details of my approach, it is very important to clarify that, because the user has full controll of the browser, each control implemented with front end technologies, must (!) Be repeated also in the backend. Recognize an authenticated user There are probably several ways to recognize an authenticated user; infact it’s possible to set a global variable, or create a cookie… but my favourite way to reach the objective is to use an AngularJS service.
This approach give me several advantages. Natural Language Form. AngularJS.
Libs. Community. Home page. Tutorials. AngularJS Cheat Sheet by ProLoser. Under the hood. How to.