But there is one important reason why the Angular templating system is different, that makes it very good fit for application development: bidirectional data binding.
The template is compiled in the browser and the compilation step produces a live view. Angular CLI is also called as the command line interface tool. It is used to build, initialize, and maintain Angular apps.
In angularJS, pipes can have more than one parameter in order to tune the fine output. You can create a parameterized pipe by declaring the pipe with colon : and values of parameter. Developer can separate multiple parameter values with colon :. Routing is a method of merging various views. The controller takes the decision to combine these views depend on logical needs. Isolated test is a process of checking instance of class without using any injected values or Angular dependence.
It helps you to implement program very easily. DSL animation functions in AngularJS are: 1 group , 2 state , 3 transition , 4 style , 5 keyframes , 6 trigger , 7 sequence , and 8 animate.
In angularJS, a module is a process to group directives, and services components that are related. It arranges them in a way that they can mix with other modules to create an application. In angular, pipes provide a simple method to transform the data. It takes the values like arrays, integers, data, and strings as input and divided with pipe symbol. It converts the data in the required format. Pipes displays the same thing in the browser. In angularJS, it provides some in-built pipes, but developers can also develop their own pipes.
ViewEncapsulation determines whether the styles defined in the AngularJS component will affect the entire app or not. Prep Up For your Job Interview!!! Go through AngularJS Tutorial to be better prepared.
This detailed AngularJS interview questions pdf will help you to clear the doubts about AngularJS interview questions and will also help you to crack the interview. Skip to content. A command line interface- it can generate components, routes, services, and pipes with the help of commands. Data binding- data binding has been improved in Angular 2. So, whatever DOM element property you need to bind, you just wrap it in square brackets.
Modern- Angular 2 has been targeted as modern browsers in which various hacks that make angular harder to develop have been removed. Lazy loading can be done only in four steps:— Update your route file Install angular-router-loader and add the loader to your webpack configuration file.
Define the lazy routes Import the routes to the module. The Angular 2 comprises of the following key components: Module — This is used to break the application into the logical pieces of the program code and each piece of code or module is designed to perform a single and unique task. Component — This is used to bring the modules together. Metadata — This is used to add more data to an Angular JS application. Service — This component is used to develop the components, which can be used to share in the entire application.
Below are few component specific hooks in Angular2. The hidden property in Angular 2 is a special case. The property is more powerful and is used to bind any property of the elements. It is considered the closest cousin of ngshow and nghide.
So, some of the advantages of Angular 2 are:- Angular 2 Angular1 Angular 2 is a mobile-oriented framework Whereas Angular1 was not developed with mobile base in mind. Angular 2 is a versatile framework, i. Nowadays, the controllers are replaced by components and Angular 2 is completely component based.
Whereas Angular1 was based on controllers whose scope is now over. The differences between observable and promises are: Observable is a more powerful way of handling HTTP asynchronous requests.
Whereas, A promise handles a single event when an asynchronous operation completes or fails. An observable is like a stream which allows passing zero or more events where the callback is called for each event. Observable works with multiple values for a particular time. Whereas, Promises works with and even returns a single value at a time. Observables can be canceled. Whereas, Promises cannot be canceled.
Observable supports map, filter, reduce and similar operators. Whereas, Promises cannot be retried. A promise should have access to the original function that returned the promise in order to have a retry capability. They are: In Angular 2, a component is a directive with a view whereas a directive is a decorator with no view. Components are the specific type of directive that allows us to utilize web component functionality throughout our application.
Whereas, Directive is the mechanism by which we attach behavior to elements. A component is used to break up the application into smaller components.
Whereas, Directive is used to design the re-usable components. Components can be used to define pipes. Whereas, We cannot define pipes using directives. Components can be present per DOM element.
Whereas, Directive is used to add behavior to an existing DOM element. Here are some of the differences between ActivatedRoute and RouterState with reference to Angular ActivatedRoute consists of the information about a route associated with a component loaded in an outlet. Whereas, RouterState represents the state in which the writer actually is. We need ActivatedRouteSnapchat to traverse all the activated routes. Whereas, during a navigation, after redirects have been applied, the router creates a RouterStateSnapshot.
ActivatedRouteSnapshot has old data. When route changes, ActivateRouteSnapshot has data from previous route. Whereas, the RouterState cares about application components, or, to be more specific, about their arrangements. The comprehensive comparison that taps into components initialization process is given below:- ngonInit is just a method in a class which structurally is not different to any other method in a class.
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