Today AngularJS is one of the most popular JS Framework. It was developed & maintained by Google. AngularJS popularity is behind its key features. Some of the advanced key features of AngularJS are Model, View, Controller, Search Filter, Directives, One way & Two way Data binding etc. Are you going to Get Started with AngularJS programming. If so this session can very helpful for you. In this session we are presenting the most frequently used in-built directives of AngularJS. To make your learning easier here we are also sharing easy examples.
ng-repeat - To run a loop in HTML AngularJS provides ng-repeat directive. ng-repeat works like a for loop. Let's take a case where you want to show list of Country names in a Combo box. In this case if you are using HTML ul li element then to show list of values in Combo box you can apply ng-repeat to li elements.
ng-repeat with Search filter - As we discussed above AngularJS is rich with powerful Search facility. To implement search we don't required to write our own functions or methods. By simply calling filter with any data bind directive we can easily implement Search facility.
ng-view - ng-view is like a div or span control of HTML. Generally during we design a Single Page Application (SPA) ng-view comes into picture. Let's i have a Company website. I want to update contents in content area depending upon the tab click. In this case ng-view act like a Container.
ng-show & ng-hide - These directives we used to show or hide contents. ng-show and ng-hide works similar.
ng-model - In AngularJS ng-model is used to identify a Control for the use in AngularJS Scope. This is one type of in-built model for Controls.
ng-switch - Every programming language provides Switch case after if else. For more number of Conditional statements Switch case renders better performance. In AngularJS ng-switch is the directive which we used to handle switch case. Like default case in Angular we use ng-switch-default. Hope the example can describe you more better.
ng-options - During we display list of records generally we use HTML Select Box. In this example I am binding JSON formatted data using ng-options directives from AngularJS.
After these Directives AngularJS provides many more in-built directives. You can also create your own directive in Angular.
AngularJS was created by Miško Hevery, a Google engineer, as a side project to simplify web development. Recognizing its potential, Google adopted and further developed the framework, officially releasing it in 2010. The framework was designed to address the complexities of building interactive web applications by providing a structured and efficient way to manage front-end development.
-
Two-Way Data Binding One of AngularJS’s standout features is two-way data binding, which automatically updates the view whenever the model changes and vice versa. This eliminates the need for manual DOM manipulation, reducing boilerplate code and improving development efficiency.
-
Directives AngularJS introduces directives, which extend HTML with custom attributes and elements. Directives like
ng-model,ng-repeat, andng-ifenable developers to create dynamic and reusable components, enhancing code readability and maintainability. -
Dependency Injection The framework’s built-in dependency injection system allows developers to manage components and services efficiently. This promotes modularity, making it easier to test and maintain applications.
-
MVC Architecture AngularJS follows the Model-View-Controller (MVC) pattern, separating application logic, data, and presentation layers. This architectural approach ensures cleaner code organization and better scalability.
-
Testing Support Google designed AngularJS with testability in mind. The framework supports both unit testing and end-to-end testing, ensuring robust and error-free applications.
Simplified Development AngularJS reduces development time by automating repetitive tasks, such as DOM updates and event handling. Its declarative syntax allows developers to focus on functionality rather than low-level coding.
Community and Ecosystem Backed by Google, AngularJS benefits from a large and active community. Numerous libraries, plugins, and third-party tools are available, making it easier to extend functionality.
Cross-Platform Compatibility AngularJS applications run seamlessly across different browsers and devices, ensuring a consistent user experience.
Despite its advantages, AngularJS has some criticism. The framework’s learning curve can be steep for beginners, especially those unfamiliar with concepts like dependency injection and directives. Additionally, performance issues may arise in large-scale applications due to the digest cycle’s overhead.
Due to the rapid advancements in web technologies, Google introduced Angular (commonly referred to as Angular 2+) as a complete rewrite of AngularJS. While AngularJS remains in use for legacy applications, newer projects typically adopt Angular for its improved performance, component-based architecture, and enhanced tooling.
AngularJS revolutionized front-end development by introducing powerful features like two-way data binding, directives, and dependency injection. Its impact on modern web development is undeniable, and although newer frameworks have emerged, AngularJS remains a strong foundation for many applications. Developers continue to appreciate its structured approach, making it a valuable tool in the ever-evolving landscape of web technologies.
Developed by https://jharaphula.com/category/programming-solutions/