Difference between Angular 4 vs Angular 5

Difference between Angular 4 vs Angular 5

When it comes to building a web application, which has multiple and complex business logic in it, Angular can be a perfect choice. Everything which is applicable for Angular 4 is also applicable for Angular 5 version. However, some basic concepts for Angular since its inception like controllers, scope, directive, and modules have been replaced, but still, there is a sense of complexity associated with it. Service improvements and new features including bug fixes from version 4 are being shipped in version 5. Main attraction arriving with Angular 5 is, however, its speed and execution. Loading time with execution is being made faster with Angular 5. Not just speedy execution, compiler have also been improved albeit slightly. Diagnostics generated by the compiler is slightly improved, when decorator has the wrong expression which results in a faster rebuild. It also assists in incremental compilation for production builds.

Angular 4 is an output of a complete overhaul of Angular version 1. It needs high development skills since it arrives with a set of complexity. With version 4, animation package has been pulled out from the core and put into a separate package. Few advantages like documentation finding, auto-completion like features can also be enabled with it. With this version, parent and child elements can be coordinated across page transitions, because of animation enhancement. The template is being cited as an ng-template tag, instead of <template>. Developers, who use the deprecated template while updated to Angular 4 version, can be identified easily with this new feature by the core Angular team. Core Angular team has also upgraded version 4 with TypeScript version 2.2. It will enhance the security of Angular applications. The rate of NGC would be much faster, resulting in far better type checking during the program.

Angular 5 has some certain other enhanced features. Prior version 5, an earlier version like 4.3 were launched with HttpClient within @angular/common as a smaller but powerful way to make a web request. But with version 5, this HttpClient is being replaced with HttpClientModule which lands under @angular/common/HTTP package for all applications. If one wishes to update the HttpClient, then it becomes necessary to replace HttpModule with HTTP client module. Another welcome feature is support for AppShell. A router is being used to render the application. The app shall be simply inserted by using commands like -ng generate app-shell. Also with version 5, one can decide whether or not, to restrict newlines, white spaces, and tabs from the application level as well as component level.

With version 4, route parameters are being made available in the form of a map and its execution can happen via simple method calls. All get an update operation can be performed now efficiently with a new service known as Meta tags. Thus with version 4, type security of applications and speed of ng-compiler execution is enhanced significantly. Coding faults can be easily found out with this, like defining a variable and telling TypeScript that null and undefined keywords can be inserted as the variable’s value. Directive addition of ngComponentOutlet enables the developer to create a dynamic component, declaratively.