Template Driven Form - pristine Vs dirty in angular | Angular tutorial English (Session-254)

Template Driven Form – Pristine vs Dirty in Angular | Angular tutorial in English (Session-254)

In this Angular session, learn the real difference between pristine and dirty states in Template-Driven Forms — two core concepts that help you understand how users interact with form fields. These states are essential for showing validation messages at the right time, avoiding unnecessary error highlights, and improving overall form experience.

Angular automatically tracks whether a form control has been changed or not, and updates the pristine and dirty properties based on user actions.

What You’ll Learn in This Video:

1.What is pristine and when a field is considered pristine

2.What is dirty and how Angular marks a field as dirty

3.Difference between pristine vs dirty with real examples

4.How Angular updates these states as users type or edit fields

5.Using pristine/dirty to show or hide validation messages

6.Checking control state in template using ngModel

7.Real-world use cases: login forms, signup forms, feedback forms

FAQs (Pristine vs Dirty)

Q1: What does pristine mean in Angular forms?
Q2: When does Angular mark a field as dirty?
Q3: How do I check pristine or dirty states in template-driven forms?
Q4: Why should I display validation errors only when a field becomes dirty?
Q5: Do pristine/dirty states reset on form submission or reset?

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