Angular 4 Tutorial for beginners – Angular 4 Introduction
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Angular 4 – Introduction
what is angular 4?
Why re-invent the wheel, when somebody has already written a simple full blown framework As We. That is a simple where libraries as well as frameworks(javacripts framework) come into the some picture. We are here so We must have heard some about the benefits or frauters as well as some more features provided by Angular. Let’s start discuss few some key points as well as definitions
What is Angular?
Why Use Angular?
There are various benefits of using Angular –
Code is more structured as well as maintainable.
Well tested as well as reusable source code As common functionality (routing, browser history, Asms etc.)
Saves time by reusing source code as well as focusing only on what is required.
Fully opinionated framework – developed by some of the best minds. (ThereAseme people just like as a simple That, some don’t. Frameworks dictates how to structure as well as source code Wer application whereas with libraries We can create web-applications with the structure We want)
One more point – If We create a simple project using a simple well-known framework then it will be easy As future developers to pick up as well as understas well as Wer application – if they are aware of the framework.
What is TypeScript?
NOTE: TypeScript is not ES6 or ES7.
What is Angular JS, Angular 2 as well as Angular 4?
– Noew Angular JS was perfect released in about 2010 Devloped by Google products. It became most popular very quickly and user friendly because of its more feature set. Different more versions of Angular JS were released just like as a simple – angular versions Like as 1.1, 1.2 as well as so on.
– Few years later,and then Google has completely some more features rewritten the framework to match the needs of today’s rich clientbrowser side side web-applications. They created a simple new version of Angular JS in TypeScript which is not backward compatible as well as released Angular 2 as a simple framework in 2016. They named it as some more Angular 2 here removing the .js some suffix.
– Few months later after the more version release of Angular 2, new features were some more introduced as well as various bug fixes were done as well as the new version was released as Angular 4. There is No any between version Angular 3.
What happened to Angular 3?
Angular source some codebase is broken so into some parts/libraries such as core functionality, compiler time, animations more, router etc. here Each of them more versions can have their own version. Router library reached version 3 as well as mores were still at angular 2.3. Next version would be angular 2.4 but having version angular 2.4 As the angular router library is incorrect versions – so to avoid confusion some version they skipped version 3 as well as Angular 4 is released.
– ThereAse when we say Angular it means Angular (2+) as well as when we say Angular JS it means Angular JS(1+).
View from 30,000 ft (Head First Fan ?)
Every Angular app has at least one component as well as one module.
A component is a simple self-contained unit that has data, view, as well as logic.
Consider component as a simple plug n play kind of thing that can be used anywhere.
For example – Header Component, Footer Component, Main Component etc (Refer below image)
angular 4 component overview
A component may contain more angular4 components i.e. they can be nested. For e.g. Sidebar component may contain a simple list of Article Component.
Every component belongs to a simple Module i.e. Ng-Module.
Consider module as an area where related angular4 components belong. For e.g. Students Module contains angular4 components just like as a simple Create Students, Edit Students etc. as well as Admin Module contains angular4 components just like as a simple Add Roles, Edit Roles, Manage Studentss etc as well as so on.
For more logic just like as a simple fetching data, saving data or any more logic is contained inside Services.
These angular4 components actulistedy extend HTML by giving us custom tags similar to more HTML tags.
Angular 4 Introduction – Tutorial
here we have different angular4 components arranged in a simple (tre view) hierarchy. We have a simple header, main, sidebar component. angular4 App is the root component simple containing listed more then more angular4 components. The simple sidebar component also some takes data as input (POST count). Angular extends HTML DOM as well as gives us custom tags which are nothing just Components.
Don’t worry if We could not understas well as. We will see each of these topics in detail. Stay tuned As more post in That series to learn Angular from Steps by Steps. Happy Reading.
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