Reset Forms in Angular using Reactive Forms

TL;DR

Learn how to reset reactive forms in Angular, including resetting form values, validation statuses, and making the form pristine and untouched.

Transcript

resetting of angular forms sounds and looks like  quite a simple operation isn't it however in many   scenarios Its Behavior might be very surprising  for example when you reset your root form group   model then after resetting you realize that  the status of the form is still submitted   from this video you will learn everything  you have to know ... Read More

Key Insights

• 💁 Resetting forms in Angular involves resetting form values, validation statuses, and making the form pristine and untouched.
• 💁 The NG submitted status represents the submission state of the form and can be reset using the form group directive's resetForm() method.
• 💁 Different strategies can be used for resetting forms, such as resetting values to null or keeping user-entered values.
• 🤙 Handling the native JavaScript reset event requires calling preventDefault() to prevent the default behavior of wiping form values.

Questions & Answers

Q: What is the purpose of resetting the form in Angular?

Resetting the form is important to restore the form to a certain state, including resetting values, validation statuses, and making the form pristine and untouched.

Q: How can you reset form values to null in Angular?

To reset form values to null, you can simply call the reset() method on the form group instance representing the form.

Q: What is the significance of the NG submitted status in Angular forms?

The NG submitted status represents the submission state of the form and is handled by the form group directive. It can be reset using the resetForm() method of the form group directive.

Q: How can you reset the form to the initial form value in Angular?

To reset the form to the initial form value, you can save the initial value after building the form and provide it as an argument to the reset() method when needed.

Key Insights:

• Resetting forms in Angular involves resetting form values, validation statuses, and making the form pristine and untouched.
• The NG submitted status represents the submission state of the form and can be reset using the form group directive's resetForm() method.
• Different strategies can be used for resetting forms, such as resetting values to null or keeping user-entered values.
• Handling the native JavaScript reset event requires calling preventDefault() to prevent the default behavior of wiping form values.
• The video course covers advanced Angular form features, custom form control implementation, dynamic form creation, and global validation error management.

Summary & Key Takeaways

• The video discusses the importance of resetting forms to a certain state after submission or at a specific point in time.

• The first strategy mentioned is to reset form values to null, reset validation statuses, and make the form pristine and untouched.

• The second strategy involves resetting everything but keeping the form control values as entered by the user.

• The video also covers resetting the form to the initial state and handling the native JavaScript reset event.