juniorAngularJS
What is two-way data binding in AngularJS?
Updated Apr 28, 2026
Short answer
Two-way binding syncs model and view automatically.
Deep explanation
Changes in model update the view and vice versa. AngularJS uses watchers and digest cycle to track changes.
Real-world example
Forms updating UI instantly.
Common mistakes
- Performance issues with too many bindings.
Follow-up questions
- What is ngModel?
- Why avoid overuse?