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What is angular json and what are its benefits
AngularJS is a platform that helps you to create Single Page Applications. It combines HTML, CSS, and JavaScript to make developing these apps very easy. However one of the problems that programmers come across is JSON. In order for AngularJS to work with a data service it has to be using AJAX requests. This means you need a server somewhere in the world that can accept your request and send back your data in JSON format, which then needs to be parsed by your code. This can be a bit of hassle and for some people could be quite annoying. But what if you could parse JSON data without the need for HTTP requests? This is where AngularJS comes in. It uses a technique called parsing JSON data without the need of AJAX calls by using the parser provided by AngularJS. In this article, I will talk about what AngularJS is and how JSON data can be parsed in angular js.
The question that arises when you start to use AngularJS is how do you get the data from a web server and present it to the user? This can be a difficult task for the developer because they would have to use AJAX requests to send a request to the server. The server then returns that text back which then has to be parsed by some code in order for it to work. You can see why this could be difficult and there are many developers that use json data with AngularJS.
What is AngularJS?
How to use angular json in your project
As you can see I’m using AngularJS 1.4.9 and it’s a good idea to update, so I’m going to install:
npm install -g bower
bower update angular#1.4.9
ng serve
And now, to see how the app runs, I need to set up a server. This can be done by running:
node –harmony script/server
This will start the node server on port 3000 and now we can open a browser window, type http://localhost:3000 in the address bar and see my app as it should look.
This is the easiest way to get my app up and running, I can’t provide another tutorial for your exact setup (site, framework etc.) but here’s the basics:
jsonData = { “name” : “Martin”, “age” : 28 }
elem = angular.element(‘#myData’);
elem.scope().model = jsonData;
But in my app I only need to display this data. This is a better approach, and with the help of the ng-model directive we can have this display:
elem.scope().model = jsonData;
I’m using JQuery 1.7.2, but another good library is Script.aculo.us which can do a lot more than I describe here.
Examples of how to use angular json in your project
I mentioned this earlier but I think it deserves mentioning again. All the code for this tutorial is available in a Github project which you can find here . I’m going to create a simple Guestbook template and use AngularJS’s built in JSON parser. We’ll be doing everything from scratch so please make sure you have NodeJS installed. And if you don’t have AngularJS installed, install it with:
npm install angularjs
Now lets jump into our Guestbook client. Create a new directory called guestbook , and then in the resulting guestbook directory, open up index.html . Then we need to create a new file called guestbook.js . This will be used to bootstrap our angular application. For those of you that are familiar with MVC, this is equivalent to creating a controller for your application (our home page). In our case, we want to make a guestbook template. Open up guestbook.js . All this file does is make a call to the controller and then displays the result (the guestbook).
Tips for working with angular json
I hope you find this tutorial useful, it was my first time using AngularJS and I had to go through some trouble in order to get a basic website up and running. But if you do get stuck then feel free to contact me and I’ll be more than happy to help.
You can download the final project here (I have disabled the default CSS styles and included some basic styling, as well as adding a few extra features.)
The full code is also available on GitHub.
Table of contents:
Downloading AngularJS and creating a basic HTML page.
Creating an Angular Controller. Adding some fundamental code to our controller. Adding a View for our page. Adding some basic layout for our page. Creating the Directive for our page. Using the Directive to create a list. Implementing a link-out to the list from our page. Creating and using a Controller in JavaScript.
#1) Downloading AngularJS and creating a basic HTML page
AngularJS is provided via NPM (Node Package Manager).
We’re going to first install our project dependencies. If you’re not familiar with NPM, I would suggest you read up on it here . If you have not installed NPM yet, go here and follow the instructions.
The commands below may take a few minutes to run, so grab a coffee.
Alternatives to angular json
If you would like to try something a little bit different, then there are plenty of other tools you could use. For example, you could try using Websockets which is great for real-time communication or maybe you could try out the Data pomp library, which is a wrapper around this actual ng2-json library.
Angular 2.0 is still in development and being improved on a daily basis with new features, and bug fixes. There are a lot of improvements over Angular 1.x that makes it worth to update your code base to start using the newer version. But also if you found this article interesting, please share it or upvote it, because every little bit helps!
##What is “angular json”?—–
The new version of AngularJS, 2 (2.0), is almost ready.
In this article, we will focus on the new `@angular/http` module and how to test it. In the next articles, we will discuss other features such as HttpClient, HttpInterceptor, Observables and their testing.
One of the features of 2.0 that has been in constant evolution is Angular HttpClient.
Since Angular 2.0 is still under development, for sure there are many more changes, but this article will give you a sense of what to expect.
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