Cons of AngularJS:

Performance: Dynamic application didn't generally play out that well. Complex SPAs could be laggy and badly arranged to use because of their size.

Steep learning curve: As AngularJS is a versatile instrument, there is in every case in excess of one approach to finish an assignment. This has created some perplexity among engineers. Nonetheless, the abundance of instructional exercises and issue dialogs took into account settling the vast majority of the issues.

After the release of Angular 2 and afterwards the Angular 4 update, the utilization of the first AngularJS 1.x gradually began to decline. While the new versions still have similar features, portrayed in the advantages segment, they were totally rebuilt in the new versions.

Cons of Angular2 & 2+

On the off chance that you've been following the publicity and exchange around Angular 2-7 releases, you may realize that the technology produces much analysis around it. We should analyze the principle disadvantages to likewise be considered.

Divided and churning community:

Notwithstanding the LTS claims, the community around any technology is the thing that makes it ground-breaking in the market. Furthermore, the Angular community story is very questionable. As per the 2018 StackOverflow Developer Survey, Angular (both Angular 1.x and Angular) is the second most usually utilized technology in the category Frameworks, Libraries, and Different Technologies, which is cool.

Be that as it may, the reality is that the developers that ordinarily utilize Angular are probably going to beat by a similar survey in the category the Most Loved, Dreaded, and Needed Frameworks, Libraries and Tools. As of now, TensorFlow is the most loved technology surveying 73.5 percent, trailed by React with 69.7 percent. What's more, 45.4 percent of the respondents are considering Angular the most dreaded technology. It's lower than Hadoop (46.1), Xamarin (51), and Cordova (59.6), yet at the same time very high. On the splendid side, the outcome is lower than in the earlier year (48.3), and likely the general population who are screwed over thanks to AngularJS on legacy items likewise cast a ballot. Thus, some piece of this negative reaction may really be routed to AngularJS.

Relocating legacy frameworks from AngularJS to Angular requires time:

As we stated, the distinction among AngularJS and Angular is expansive, so is the way of movement from the past to the future. In contrast to refreshing from saying Angular 6 to Angular 7, it won't be a breeze, particularly in case you're managing a legacy monstrosity.

There are diverse approaches to do that, one of which is to utilize a hybrid methodology. It involves having both old and new Angular working in the meantime while you gradually update the entire item. In addition to the fact that it takes time, you'll need to audit numerous tools, the change to another language, and manage a heavier application as you have both Angulars running.

Angular is verbose and complex:

The most incessant dissension that you get notification from the Angular development community is the verbosity of the instrument. This issue hasn't changed since AngularJS.

In spite of the fact that we've referenced the segment based design as the major Angular advantage, the manner in which components are overseen is excessively entangled. For example, you may require up to five records for a solitary segment in Angular, need to inject conditions, and pronounce the part lifecycle interfaces. Different purposes of concern are Angular-explicit outsider libraries and its syntax. Consequently, a great part of the development time in Angular is spent doing tedious things.

Steep learning curve:

On the off chance that you locally available new developers comfortable with JavaScript to learn and utilize new Angular, they will be tested contrasted with comparative React or Vue onboarding. The variety of themes and aspects to be secured is vast: modules, dependency injection that we referenced previously, components, services, templates, and so forth.

Another boundary is RxJS, a reactive programming library for nonconcurrent programming. Learning it, in any event on the essential dimension, is compulsory for utilizing Angular. Engineers whine about error messages that are excessively obscure, making it impossible to grasp without extra research pursued by trial-and-error manipulations.

TypeScript, as we've just referenced in the advantages segment, is additionally a bone of contention. While TypeScript enhances the practicality of code, learning it doesn't make the curve gentler.

CLI documentation is inadequate with regards to subtleties:

A few engineers express concerns with the present province of CLI documentation. While the order line is extremely helpful and loved by Angular developers, you wouldn't discover enough information in their official documentation on GitHub and you'll invest some energy in investigating strings on GitHub to find solutions. Fortunately, the community is there to help.

Angular is made for enterprise-scale applications:

Asserting that new Angular is dubious would be excessively euphemistic. If you somehow managed to peruse diverse input posts from the development community, all things considered, you'd stumble over complaints as opposed to the excitement. In any case, we aren't that pessimistic about Angular.

The utilization of TypeScript for expanding the practicality of code, the performance score that enhances as you make progressively complex applications, and an explicit ecosystem decisions imply that Angular is probably going to end up the fundamental instrument for long haul and substantial speculation projects where a steep learning curve is made up for by steadiness and continuous tech support.

What's more, this is the real contrast between the new Angular and ReactJS that you may likewise consider. The last is anything but difficult to grasp, deploy, and begin working with, yet it's unquestionably less versatile and viable than Angular.

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