Difference Between Angular 2 and Angular

Angular 2 and Angular

Angular 2 vs Angular 1: Angular can be defined as an application that helps coders or programmers build different web applications. There are various differences that arise when discussing Angular 1 and Angular 2. Angular 1 is mainly used when dealing with a DOM compiler in an HTML environment. It was designed to help designers create web applications without necessarily writing a code. Angular 2 on the other hand, was an improvement of Angular 1 and it came with more advanced features previously absent in Angular 1. Some differences between angular 2 and Angular 1 are as follows:

What is the difference between Angular2 and Angular?

  1. Mobile-oriented: When Angular 1 was first designed, it was not intended to support any mobile environment. And this is probably one of the most striking differences between the two applications. The design of Angular 2 was meant to make it mobile friendly and this is why it is considered the most advanced of the two.
  2. The controllers: In Angular 1, the x controllers usually disappear after the program is consoled whereas this is not the case when it comes to Angular 2. The x controllers in angular 2 are replaced with components while for angular 1, x controllers disappears completely and are not replaced with anything. Angular 2 has an extra notation with an export keyword but is not in angular 1.
  3. The size: Angular 2 is smaller in size compared to angular 1. This means that when it comes to matters concerning the loading time, angular 2 tends to take less loading time because it is smaller in size while angular 1 takes more loading time because of its bigger size.
  4. The languages used: For Angular 2, there are more choices when it comes to what languages one prefers. For instance, one can decide to use typescript, ES5, ES6 or Dart when writing angular 2 code. Angular 1 does not provide the user the luxury of choosing what language to use when writing a coding program. This limits the user a lot as the addition of the typescript, which is not in angular 1 provides a great step when writing codes in JavaScript.
  5. Setting up: Angular 1 is easy to set up compared to angular 2. All that the user needs to do for angular 1 is to set up a reference of library and is set to go live but for Angular 2, it is dependent on other libraries which requires a lot of effort to set up.
  6. The bootstrap: Angular 1 it has two ways to bootstrap the program, one way is to use the (ng-ap) attribute and the second is by use of codes. Angular 2 on the other hand, has only one way to set bootstrap, and that is only by use of codes. The bootstrap function takes the components which are also parent component of the angular application.
  7. The structure they are built: In angular 1 structural directives, the syntax is changed in such a way that the (ng-repeat) is replaced with (*ngFor) while in angular 2 structural directives, the asterisk (*) sign is used as a prefix for structural directives. The (in) is replaced with (of), and the camelCase syntax is also used.
  8. Their uses: Angular 2 has a major change that enables it to directly use the valid HTML DOM elements and properties. Angular 1 uses ng-href, ng- src, ng-hide and ng-show. Angular 2 has some hidden properties to get the same output that Angular 1 would still output using its properties. Angular 2 takes the HTML event and wraps it with parentheses while angular 1 does not wrap the HTML event using parenthesis.
  9. Definition of service: In Angular 1, a service can be defined in 4 different ways i.e factory, service, provider, constant and values while in Angular 2 there is only one way of defining a service and that is by using a class. Only one service is defined in angular 2 but you will need to register it with your component using the provider.
  10. Dependency injection: Angular 2 has an advantage when it comes to dependency injection. The DI in Angular 2 is available, but there is a different way of injecting the dependencies. When everything is in class for angular 2, the DI is achieved via the constructor while for angular 1 the DI is not available which introduces the disadvantages when it comes to dependency injections since it will need to have some programs written to help in the injection.


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