May 13, 2021 Last updated May 13th, 2021 1,201 Reads share

Most Common Mistakes Angular Developers Make

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To err is the human. Regardless of expertise and experience, we all tend to make some mistakes or errors at the job. An Angular developer is no exception. Some mistakes are too common that they happen by default. 

So, learning from mistakes is the best thing that an Angular developer can do to make its work productive and effective. There is one more thing that an Angular developer can do to commit the least possible mistakes at the job and it knows the most common ones. 

Out of all the mistakes, some tend to happen and trap the Angular developer the most. We have come up with a list of those mistakes. Know them well and try not to commit them while you’re developing an app. 

Mistake #1 – Not being attentive towards unsubscribe 

As an Angular developer, it is crucial that you clean your subscriptions and not ignoring them. No excuse will be entertained at this front. Yet, the majority of the Angular developers commit this one. They forget to clean their unwanted subscriptions. 

Raised Issue – With a constant subscription, the risks of memory leaks in the system increases. 

Besides, this subscription built-up possesses a huge risk on the data security. 

Possible Solution You can solve this issue with two solutions. The first one says to initiate the OnDestroy lifecycle hook for your subscribed components and the second one suggests you prompt the lifecycle hook for the previously subscribed services. 

In layman’s languages, it is wise to bind up the services which are no longer useful for you. 

Mistake #2 – Putting all the excessive codes into one single controller

This is the second most common mistake that any Angular developer makes. The most common work responsibility on the shoulders of 

The angular developer is organizing and developing the codes. 

In AngularJS programming language, it is done by doing the equal distribution of the codes into small cubical. This way, codes are easier to track and capable to work sufficiently with each other. But, the MVC architecture of AngularJS compels putting excessing codes into one single controller. 

Besides, there is one more very common code handling mistake which is placing one single concept into a single controller.   

Raised Issue – Because of this layering of code happens. 

Possible Solution – You can reduce the odds of codes layering by generating minimized compartments for each application territory. It is wise to created sorted units for the rationale layer. 

Mistake #3 – Calling out jQuery for help 

We understand that as an Angular developer you are excited to have viable libraries and jQuery is popular amongst all. This library is widely used for simplifying DOM manipulation. But, when you’re using AngularJS, jQuery has no place. If you’re still using it then you’re committing a mistake. 

Raised Issue – Using jQuery by an Angular developer is not suggested as using it will make you force to call $digest() all by yourself. Also, there is an AngularJS dedicated solution for DOM manipulation. 

So, jQuery doesn’t have any grounds here. The use of jQuery will also leave you a huge chunk of detached DOM trees, which are not easy to clean up. 

Possible Solution – Before you blindly follow the practice and start using jQuery, look up for in-build DOM manipulation features. 

Mistake #4 – Performing DOM changes directly 

If you want to be known as a reliable and efficient Angular developer then stop performing DOM changes directly. Most of the developers do that and this is where the main problem starts.   

DOM alteration or modification is the most common job responsibility that Angular developers bear. To make this possible, developers usually refresh the title of the page, execute SVG, or concentrate on the control post a validation error. They take the help of jQuery for this job as well. 

Raised Issues – Altering the DOM directly, using jQuery, will prevent updating the views. AngularJS can’t make that the DOM element has been generated. Hence, change detection will not work.  Also, it can hinder the platform’s independence of your app.   

Possible Solution – Try using ElementRef.native element or utilize the Renderer2 service. With the Rendere2 service, you will be able to use the default layer in the browser and can easily replace the renderers with viable and fitting options whenever you try to run your app on a different platform. 

Mistake #5 – Taking the help of client-side pagination for a large database 

Every Angular developer has to perform data rendering to ensure the proper representation of bulk data in the app. Using client-side pagination for this job is the biggest mistake that any Angular developer can make.  

Raised Issue – For bulky data, using client-side pagination can be too time-consuming and taxing. It increases the time to market the app. 

Possible Solution – Instead of client-side pagination, try server-side pagination. In this type of process, the system can run the specific pages and enter the data records as per the given directions. 

Mistake #6 – Not using the Angular in its full capacity  

Most of the time, developers overlook Angular and take the help of other resources. This makes the process of app development complex. 

Raised Issue – Some of the third-party libraries have poor compatibility with Angular. 

Possible Solution – Try to search for the alternative in the pre-built list of features in Angular before start using other tools. Angular has many of them and won’t disappoint you at all.  For instance, there are reactive forms, service and pipes, route guards, custom directives, interfaces, decorators, resolvers, and Http Interceptors. 

Mistake #7 – Not testing the app in a different browser 

The ecstasy of developing the app is too overwhelming and a developer can get carried away with it. And if s/he has launched the app without testing it in different browsers then all the efforts can go in vain. Sadly, many developers commit this mistake very often. 

Raised Issue – With the cross-browser testing, you might end up having a buggy app. 

Possible Solution – If you find cross-browser testing too tedious then try using online tools like LambdaTest tools or BrowserStack. They will perform the testing in the least possible effort. 

The Final Say 

It’s ok to make mistakes. But it’s not ok to turn a blind eye towards the most common ones and repeating them again and again. Learn from the above list and educate yourself about mistakes that are commonly committed by an Angular developer. They are very common and have very viable solutions. 

When you learn to stay away from these mistakes then you can make most of this powerful framework. So, don’t make your work tedious or cumbersome. Just have an easy-going journey. It will improve your productivity and make most of your skills. By no means, your abilities will be questionable. 

Chandresh Patel

Chandresh Patel

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