This article describes the common mistakes to avoid while using Angular JS.
Keep a track on the count of Watchers :
For each binding, Angular JS creates a watcher. Evaluation and comparison are performed at each digestive stage for prior bindings. The amount of watchers finally turns out to be enormous. Few watchers are all right, but when there are hundreds and thousands of them in the software that eventually slow down the output of an application in the browser, these watchers begin getting troublesome. Angular JS community has a global standard maximum limit of 2,000 watchers, so it is better to keep track of the watchers count from the very beginning of development. Some designers may write the code that counts watchers, helping to later modify and optimize the code.
Inability to use the Available tools :
Most designers do not make the greatest use of the available instruments. This is one of the most deceptive conditions as the sooner or later use of a instrument becomes essential. Firefox and Chrome, for example, integrate unusual strings of enhancement involving inquiry, error yield, and profiling. A developer can quickly discover the errors with the help of these tools and save a lot of time.
Falling back to Jquery :
JQuery is a usual library to manage occurrences and facilitate DOM manipulations. On the other hand, however, AngularJS is a framework used to create scalable applications, test and develop applications, and therefore can not be used to amplify HTML documents. Angular JS has a large number of features, so a developer should be aware of all the features available before jQuery is involved in the development. It doesn't necessarily imply you have to use jQuery even if you need DOM manipulations.
Improper use of Event Handlers :
Angular's horizon is captured to maintain all the information needed to demonstrate the user all of the page's content. It is quite affable that allows custom features to be written based on crowded content. Specifically when it comes to adding features based on predicted information such as boasting a button based on user input, Angular JS can be ideal. However, this rebels with one of the Angular JS ' fundamental values that is to sort out all the logic and show.
Fixed Scope binding :
Normally, Angular follows its own settling laws of degree. For example, a simple use of the limits of information sources to a model can prompt a typical breakdown in the binding system. The complexities, however, come down to make sure the names are fully upskilled. In AngularJS, non-primitives are passed through references, while primitives are passed through value. To put an end to this issue, the developer requires to correctly assemble their scope items.
Declaring everything with Anonymous Functions :
Assigning a clean and maintainable code to your tasks and items. It is simple to operate with this kind of well-maintained and recorded code and can be readily split into files. Not only this, there is an enhanced testability of such parts of code. This makes maintaining the application code easy for the developer and provides the code more expressiveness.
Direct Manipulation of DOM :
This is the most prevalent error committed by any fresh developer of Angular JS. Whether rendering SVG or refreshing the heading of a web page on a change in context, a developer chooses to take the easy way out and immediately make adjustments to the DOM. You should never be tempted to immediately change the DOM.
AngularJS is an outstanding front-end framework. It is one of the major web-based instruments to create single-page apps. And as it's Google-backed and scalable, you get plenty of assistance and guidance to get you started. Development is not just about writing error-free code, it is about committing and never repeating an error once. Instead of adopting the notion of "failing quickly, failing often," one must learn from other developers ' errors and make sure they rarely fail. At least because of the same error.
Author Bio :
Jeevan Kumar is a technology enthusiast and strong believer in agile product development. He is a Senior Content Strategist of Fortunesoft IT Innovations - Angular development company Singapore.