AngularJS For Web Development

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Presentation Description

In addition to being written in JavaScript, AngularJS is also distributed as a JavaScript file. It can be embedded into a web page directly through the script tag. Also, it allows developers to express various components of a web application by extending HTML with three ng-directives - ng-app, ng-model and ng-bind. The web developers can even use AngularJS expressions to bind AngularJS data to HTML without writing additional code.

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Presentation Transcript

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AngularJS For Web Development

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➢ Extends HTML Syntax InadditiontobeingwritteninJavaScriptAngularJSisalsodistributedasaJavaScript file. It can beembeddedintoawebpagedirectlythroughthescripttag.Alsoitallowsdeveloperstoexpress various components of a web application by extending HTML with three ng-directives - ng-app ng-model and ng-bind. The web developers can even use AngularJS expressions to bind AngularJSdatatoHTMLwithoutwritingadditionalcode. ➢ Implements MVC Pattern Differently Model-view-controllers enable developers to simplify development of large web applications by keeping their user interface and business logic separated. But AngularJS implementsMVC pattern in a distinct way. The AngularJS teamcalls the distinctimplementationofMVCpatternasmodel-view-whatever.

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➢ Supports Two Way Data Binding In addition to implementing MVC architecture differently AngularJS also supports two-way data binding. The feature helps developers to synchronize the data between model and view components without putting extra effort. AngularJS automatically updates the web applications frontend each time its backend changes. As AngularJS synchronizes the model and view automatically the developers are not required to implement DOM manipulation. ➢ Improves Server Communication AngularJS reduces web server load significantly by supporting caching. At the same time the built-in services provided by AngularJS help developers to improve client-server communication. The services further make it easier for web developers to work with various backend systems and solutions. Also the developers can take advantage of the built-in services to make the data return asynchronously without writing complex code.

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➢ Implements Client-Side Form Validation The web developers can create a variety of forms by combining HTML CSS and AngularJS. AngularJS further helps developers to implement client-side form validation. It monitors the state of the form as well as individual text fields. It evennotifies users about the current state of the form or input fields. The developers can easily validate the form input using standard HTML5attributes.AngularJSevenallowthemtowriteandusecustomvalidationfunctions. ➢ Keeps the Code Maintainable and Testable AngularJS helps developers to write readable and maintainable code by extending HTML syntax. In additionto extending existing HTMLtags the developers canuse directive to create custom HTML syntax. At the same time the framework keeps the code testable by allowing programmers to use plan JavaScript objects. The models in AngularJS are also designed as plainJavaScriptobjects.

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