AngularJS is one of the powerful tools, used for managing the display of data. It is the most impressive JavaScript frameworks in the industry.

The main purpose of AngularJS is to elucidate the web development process that makes it perfect for prototyping smaller applications. Moreover, it is used to develop a Single Page Application that can provide sophisticated User Experience to you. In other words, it creates scalable applications, used on multiple devices.

With the introduction of multiple features, Angular can also create pitfalls for the developers. In order to reap the maximum benefits from this scalable web software, you should avoid some of the common mistakes.

Today, in this post, we will share the top 7 mistakes that every AngularJS developer should avoid during the web development process.

Top 7 Mistakes AngularJS Developers Should Avoid





1. Unable to Utilize the Available Tools

Many of developers are unable to utilize the available tools. This is one of the frustrating situations as it becomes necessary to make a use of the tools available in AngularJS.

For example, Firefox and Chrome like browsers include an exceptional development strings that comprise debugging, error output and profiling. With the support of these tools, a developer can develop it easily in the browser and can also find the errors very swiftly.

Similarly, in the other example of the console log – AngularJS errors are usually printed on the console log, where you can find all information from the start to the troubleshooting procedure. This is specifically an issue that arises during the learning process, when searching out the way through Angular code for the very first time.

Therefore, it should be a great practice to check the console output before finding out the solutions.

2. MVC Directory Framework

The models are not as openly defined as a framework like backbone.js. When you are working in an MVC framework, then a common practice is to combine files together according to the file type:

templates/

_login.html

_feed.html

app/

app.js

controllers/

LoginController.js

FeedController.js

directives/

FeedEntryDirective.js

services/

LoginService.js

FeedService.js

filters/

CapatalizeFilter.js

It looks like an expected layout, especially, when processing from Rails background. After the application begins to scale, this particular layout causes various folders to be open. Whether you use Visual Studio, Sublime or Vim with the Nerd Tree, a lot of time is wasted on scrolling through the directory tree.

Thus, this directory framework makes it simpler to search all these files related to a specific feature that will hasten the development process. However, it can be controversial to carry .html files with .js files.

3. Improper use of Event Handler

Angular’s scope is engaged to carry all the data that is a need for your views to display the page to the user. It is very extensible that allows various custom functions to be written that is based upon the populated content. It can be a very tempting tool, used for coders.

The temptation to add code like:

$scope.onButtonClick = function() { // do something based upon data in the template } 1 2 3 $ scope . onButtonClick = function ( ) { // do something based upon data in the template }



Can be perfect, especially when it comes to adding functionality based on data showcased such as showcasing a custom button based upon user input. However, this disobeys one of the basic principles of AngularJS that is to keep your display and logic as segregated as possible.

4. Modules

It is obvious when we start to hang everything off of the main module. It can work great when starting a small application, but it instantly becomes outrageous.

var app = angular.module('app',[]); app.service('MyService', function(){ //service code }); app.controller('MyCtrl', function($scope, MyService){ //controller code }); 1 2 3 4 5 6 7 var app = angular . module ( 'app' , [ ] ) ; app . service ( 'MyService' , function ( ) { //service code } ) ; app . controller ( 'MyCtrl' , function ( $ scope , MyService ) { //controller code } ) ;



A general strategy after this is to combine similar types of object:

var services = angular.module('services',[]); services.service('MyService', function(){ //service code }); var controllers = angular.module('controllers',['services']); controllers.controller('MyCtrl', function($scope, MyService){ //controller code }); var app = angular.module('app',['controllers', 'services']); 1 2 3 4 5 6 7 8 9 var services = angular . module ( 'services' , [ ] ) ; services . service ( 'MyService' , function ( ) { //service code } ) ; var controllers = angular . module ( 'controllers' , [ 'services' ] ) ; controllers . controller ( 'MyCtrl' , function ( $ scope , MyService ) { //controller code } ) ; var app = angular . module ( 'app' , [ 'controllers' , 'services' ] ) ;



If you follow the same concept of grouping all features together will enable scalability.

var sharedServicesModule = angular.module('sharedServices',[]); sharedServices.service('NetworkService', function($http){}); var loginModule = angular.module('login',['sharedServices']); loginModule.service('loginService', function(NetworkService){}); loginModule.controller('loginCtrl', function($scope, loginService){}); var app = angular.module('app', ['sharedServices', 'login']); 1 2 3 4 5 6 7 8 var sharedServicesModule = angular . module ( 'sharedServices' , [ ] ) ; sharedServices . service ( 'NetworkService' , function ( $ http ) { } ) ; var loginModule = angular . module ( 'login' , [ 'sharedServices' ] ) ; loginModule . service ( 'loginService' , function ( NetworkService ) { } ) ; loginModule . controller ( 'loginCtrl' , function ( $ scope , loginService ) { } ) ; var app = angular . module ( 'app' , [ 'sharedServices' , 'login' ] ) ;



When you are working on big applications everything might not be carried on a single page and by having features carried within modules, then it’s easy to use the modules across apps again and again.

5. Fixed Scope Binding

Usually, Angular comes with its own scope nesting rules. A gullible implementation of inputs restrict to a model, for instance, it can lead to a common breakdown in the binding procedure. However, the complications come down to creating sure names are fully qualified.

Any consequent admittance to the index element will result in the local changes only. It is due to how scopes handle JavaScript primitive objects. In fact, these scopes will be duplicated and modify any specific element.

In other words, it means that primitives are passed by value while non-primitives are passed by references. To get out of this problem, you need to structure your scope objects.

6. Not Using Batarang

Batarang is an exceptional Chrome extension, used for developing and debugging AngularJS applications. It offers model browsing to have a gaze inside What AngularJS has determined to be the models bound to scopes. However, it can be beneficial when working with directives and to abstract scopes to view where values are bounded.

Batarang also provides a dependency graph. If it is coming into an untested codebase, then it would be an imperative tool to determine which services should get the most importance.

It would be better to use Batarang, a powerful performance tool as it is quite easy to view which function is taking most of the time span. It also shows the full watch free that can be beneficial when having assorted watchers.

7. Manual Testing

Many of developers would not prefer TDD development method. Most of the times, an AngularJS developers check to view if the code works or has broken something otherwise they can do a manual testing.

It is important to test an AngularJS application. Actually, it was created to be testable from the ground up. The main evidence of this is ngMock module and Dependency Injection. You can use the most powerful tools that can take the testing process to the higher level.

(a) Protractor

It uses the jasmine test framework to define tests. The protractor has a supportive API for assorted page interactions.

The unit tests are the building blocks of a test series, but the difficulty of an application grows, then interaction tests frustrate in more real situations. But with the help of this tool, you can verify the health of your Angular apps.

(b) Karma

After writing the integration tests by using Protractor, the test needs to run. But this waiting period can frustrate you. In order, to solve this problem, the core team of AngularJS has developed a Karma Tool.

It is one of the powerful JavaScript test runners that help to close the feedback loop. It performs the task by running the tests any time specified files are changes. It can also run tests in parallel over multiple browsers.

Conclusion

If you want to utilize the most efficient and impressive JavaScript frameworks, then you need to avoid all mistakes that can bound you to fulfill the desired goals. Obviously, it is great web software that can continue to upgrade with the community. But still, it is important for the developers to consider the major pitfalls before starting out the development process.

Author Bio

Lucy Barret is an experienced WordPress Developer at WPGeeks Ltd. She has the responsibility of handling a team of 75+ developer and delivering 100% client satisfaction with PSD to WordPress projects. She loves to share WordPress and other designing related tutorials through her blog.