AngularJS vs Angular benchmark comparison

Are you looking to migrate your app from old Angularjs to the latest version of Angular?

But why should you do that? What benefits you could get after migration? In this article we will try to answer the question is new Angular version performs better than old AngularJs.

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Why do you need to migrate from AngularJS to Angular?

Features
Angular JS
Angular 2+

Architecture

MVC
Component-based

Language

Javascript
Typescript

DOM

Static
Dynamic

Structure

Hard to manage and not stable
Better structure and easy to develop

Speed

Slow
Two times faster for the same application

Data binding

Two Way Data Binding
Interpolation, unidirectional, two-way binding, event binding

Tooling support

Third Party Tools
CLI

Reactive programming

No
Yes

Mobile support

No
Yes

Material design

No
Yes

Skilled developers

Not many due to old technology
A lot due to new technology

Development support

Hard
Average

Official support

Till June 30, 2021
Ongoing
If you still have some questions about this section please read our blog article about 12 reasons for angularjs to angular migration.

AngularJS vs Angular performace comparison

performance overview

Summary

Preparation

Preparation

Test app


To get a clear picture of which angular performs better we need a test application written on a different version of angular framework. Also we need to cover next requirements to make our experiments close to real life experience.
  1. Real World App - not just an “Hello world” example, but a working application with a couple of features and screens.
  2. Standardized - A project that has the same level of complexity and functionality. Use the same APi, has the same markup, styles etc.
  3. Trusted by community - Ideally this project should be built as open source and approved by other developers to show the impartiality of the experiment.
Fortunately for us such a project is already done and being tested for several years by Eric Simons. His RealWorld shows you how the exact same real world blogging platform is built using all popular frontend and backend frameworks. As they use the same API spec it could be used as a perfect solution for testing performance of real applications.
The example application is a social blogging site (i.e. a Medium.com clone) called "Conduit". It uses a custom API for all requests, including authentication.  For comparison were taken 3 versions from the Real World repository:  Angular 9, Angular 7 and AngularJS. Our goal is to find out if the Angular team achieved better performance with the newer versions of Angular.

Collect metrics

After considering an application to test we need to define what metrics we look at and how to collect them. To measure the performance we will use sitespeed.io. It is an open source pack of tools that helps to automize and standardize the process of collecting benchmark data from websites.

Performance overview

First visual change

The time when content of a page is visible to the user for the first time. Lower is better. The faster the page is rendering the more chances to attract end users to stay on the page.
Angular 9
Angular 7
AngularJs

Speed index

The Speed Index is the average time at which visible parts of the page are displayed. It is expressed in milliseconds and dependent on the size of the view port. It was created by Pat Meenan and you can check the full documentation here.
Angular 9
Angular 7
AngularJs

Total page transfer size 

The total transfer size of all assets on a page.
Angular 9
Angular 7
AngularJs

Javascript content size

The javascript size unpacked. Winner is Angular 9, the last version of Angular on the current moment, which use new render compilier Ivy that highly decrease the bundle size.
Angular 9
Angular 7
AngularJs

Visual readiness

Visual readiness is the time between the first visual change and the last visual change within the viewport. It is calculated by analyzing a video recording of the screen.
Angular 9
Angular 7
AngularJs
Features
Angular 9
Angular 7
AngularJS

DOM Content loaded

561 ms
907 ms
1035 ms

Visual complete

802 ms
1037 ms
1187 ms

First visual change

802 ms
1037 ms
1187 ms

Speed index

903 ms
1161 ms
1291 ms

Last visual change

2239 ms
2519 ms
2281 ms

Visual readiness (detailed)

Angular 9
Angular 7
AngularJS

As a result

Overall testing shows that newer versions of Angular performs better in most cases. The most important result is the Speed Index in which Angular 9 achieves under 1s. This metric is very important for user experience, because users will prefer to use light and fast apps to those that work slow. Also Angular team did a great job on optimizing the final size of the bundle, despite optimizations like zipping which available on both AngularJs and Angular - new Angular gives us various tools during development such as lazy loaded modules. This helps to keep the code base clean and scalable.

Our Angular developers

Denys Angular developer

Denys

Angular developer with UX focus

Short overview
Delivered more than 10 user-oriented Angular applications for E-commerce, Photography and Internet fields. Denys have 9.5 NPS score from existing customers.
Main Expertise
Angular, Angular.js, HTML/CSS, Typescript.
Soft skills
English, Critical Thinking, Troubleshooting, Communication.
Alex Angular developer

Alex

Angular developer with Enterprise focus

Short overview
Delivered more than 10 angular apps for Banking, Healthcare and E-commerce fields. Alex have 9.4 NPS score from existing customers.
Main Expertise
Angular.js, HTML/CSS, Javascript.
Soft skills
English, Detail-Oriented, Restructuring and Project Management.
Vitalik Angular developer

Vitalik

Angular developer with UI focus

Short overview
Helped companies from Industrial Automation and Consumer Goods fields with delivering interfaces on a long-term basis.
Main Expertise
Angular, Angular.js, Node.js, Chrome extensions.
Soft skills
English, Prioritizing, Attention to Details.
Denis Angular developer

Denis

Angular developer with UI focus

Short overview
Helped companies from the Information Technology sector with migration to the latest Angular from old-school looking front-end.
Main Expertise
Angular.js, HTML/CSS, Typescript, Javascript.
Soft skills
English, Integrity, Problem Solving.
Let's migrate

FAQ

  • What tech skills do you have?

    We are focusing only on front-end technologies: Angular, React, Node.js, React Native. All developers are taking courses and having learning plans in that direction.

  • Who is the owner of the source code?

    You will be the owner of all source code which we will develop for you.

  • What is your average hourly rate for migration?

    Our hourly rate is 50-100$/hour depends on project roadmap, complexity, timeline. We don't have junior developers in our team.

  • Can I talk to your existing customers?

    Sure, before starting working with us we can give you a few contacts of our existing customers so you will be able to get personal feedback.

  • What if I will want to replace my developer?

    We believe that it won't happen but still, you have this option. Just make a request to our manager and we will make a replacement for you in a week.

Let's start your AngularJs to Angular migration with us

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