Build a dynamic checkbox form in Angular with reactive forms!

Want to dynamically generate a list of checkboxes in Angular, track selected values, and even add a “Select All” option? In this step-by-step tutorial, you’ll learn how to build a scalable, flexible checkbox form using Angular’s powerful Reactive Forms module.

✅ What You’ll Learn in This Video:
- How to use Reactive Forms to dynamically create checkbox controls
- Display selected form values in real-time
- Implement a "Select All" toggle to check/uncheck everything

Whether you're building a survey, preference list, or multi-select filter, this tutorial gives you the tools you need to make it dynamic and maintainable.

No fluff—just clean, practical Angular skills you can apply today.

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🔗 Demo Links:

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📚 Additional Resources:

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📖 Chapters:
0:00 – Introduction
0:31 – Dynamically Generating Checkbox Controls with Reactive Forms
2:56 – Connecting the Form Controls to the UI
3:57 – Displaying Selected Checkboxes in Real-Time
4:19 – Extracting Selected States from the Form
5:31 – Implementing a “Select All” Checkbox for Easy Selection
8:52 – What We Built Today: A Quick Recap

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#Angular #ReactiveForms #CheckboxForm #AngularTutorial #FrontendDevelopment #WebDevelopment

[danielbrasileiro]

Hello.

I'm working on an Angular 8 project, and I can't upload the version.

I have a dynamic list of checkboxes, and I can't get the ones that are checked.

Your example uses Object.fromEntries, but it's only supported on Node 12.

Here, Node is 10.9.0.

What version of Angular and Node did you use?

How can I adapt your example to my Angular 8?

Thank you.

[MrVinodkumar]

Hi.. Can you explain what's the need for adding form control for select all... A simple click event would make more sense right. Pls explain

[aram]

Geez I can't wait until SignalForms are available - at which point I assume I could ditch all of those explicit subscriptions one needs to have hanging around in code.

[grdtech]

Don't you think if using formArray would be more easy way here? Thank you.

[ItsTimeCodeYT]

There is one bug in the demo, if you select all and unselect one of the checkbox, still select all is showing as checked. Could you please suggest how we can fix this?

[paulh]

why would u prefer a FormGroup over a FormArray? Less boilerplate in the template?

[chrisding]

Nice! Why do you prefer to use the constructor over ngOnInit? Is there any benefit to this or just a stylistic choice because other lifecycle hooks have become less relevant?