AngularJS is a perfect choice to make single page applications as it makes use of client model-view-controller. It has the set of efficient components that is used to create rich internet applications. AngularJS is considered as one of the powerful tools and the most impressive JavaScript frameworks in the industry to manage efficient data display.
The best part of AngularJS framework is to elucidate the web development process which makes it perfect for prototyping smaller applications. Moreover, single page applications can be efficiently made for sophisticated UX. Precisely, it focuses on scalable applications to be used on multiple devices.
The advancement of technology has also infected the JavaScript development environment and gave birth to fast and user-friendly web processing with the front-end frameworks, majorly AngularJS. It is a wide knowledge pool where a passionate AngularJS developer can expand his web development skills.
With multiple features, pitfalls also run in parallel for the Angular applications. To reap the maximum benefits from this software, few of the common mistakes must be avoided.
To use jQuery
jQuery is best-known for AJAX operations, event handling and DOM manipulation, unlike AngularJS which is used for creating scalable applications. So, there is no need to use jQuery. Just declare your code and extend the HTML syntax.
Declaration with anonymous functions
It is a good habit to always assign all the available objects and functions to a certain variable. It makes the code neat and enables its easy splitting into files. It is also a boon from testing side as the clearly declared code is easy to be understood and checked.
Excessive use of isolated scope
An isolated scope must be used precisely at the place where it is genuinely required. When a directive can be fit perfectly, there is no need to use isolated scope. Likewise, two scope cannot be used in one directive, else you may undergo issues during nesting and inheritance.
To avoid controllerAs
With controllerAs syntax, you can easily define the models. Basically, scope is primarily used for assigning a model to a controller object, but for several nested scopes, controllerAs produces less confusing results.
Improper use of controllerAs
Well, controllerAs is preferred to create better code for any application, but it must be fully utilized to make most out of it. For developers, it is the best choice to assign a model to a controller tool and comprise several useful functions.
Heavy processing
While working with AngularJS, heavy processing is a very common issue which can lead to frozen browser. This can be reduced with the use of web workers and you can process complex projects with ease.
Inadequate learning of resolves
Use of Resolves has a great use in loading a view and it adds the total time required in the above process. So, it must be used optimally without overusing to save the time and thus avoid the process from slowing down.
Lack of modules
Unlike initial days, a single module is not enough now to offer full functionality. Practically, it causes improper code management. So, a better approach is to group the code to gain better scalability.
Less focus on Dependency injection
It is the finest opportunities offered by AngularJS which facilitates the testing process and enables the clear code. AngularJS is assumed to be very flexible in terms of implementation. The simplest way here is to carry DI as a parameter within a function.
Excessive Watchers
In AngularJS, “watchers” is an integral component to keep an eye on the changes to a component. When a watcher has been set, the AngularJS engine will frequently review the current state of the object. For one or two watchers, performance can be maintained, but it cannot be followed when the watchers are hundreds or thousands in number. You are at the stake of risk of slow app performance in the browser.
Conclusion
AngularJS is an awesome front-end tool and a leading framework to build dynamic single page applications. As backed by Google, there is an immense support to help you get started along with plenty of user communities. Like any other platform, one needs to have a sound knowledge of syntax and basic requirements of this technology. There may be few flaws or mistakes that may occur during the coding process, but to grab knowledge from the above-mentioned points and work on the same can prevent these issues.
Author Bio:
David Meyer is an professional AngularJS web developer working with CSSChopper from past few years. He is also passionate for writing informative blogs highlighting the basic concepts of AngularJS web application development.