Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
1.3k views
in Technique[技术] by (71.8m points)

input - Clear Angular FormControls after save without form errors

I have the following code:

initializeForm(): void {
    this.myForm = new FormGroup({
        name: new FormControl('hello world', Validators.required)
    });
}

clearValues(): void {
    // save my form.. or do something, then clear my form
    this.myForm.patchValue({ name: null });
}

And then in my html I have the input and some button to save changes. After that I call clearValues.

<input type=text formControlName="name">
<button (click)="clearValues()">Save</button>

When I start my app, the field has no red errors so I can type everything, but If I leave it empty, red errors appears (obviously).

If I write something such as 'Hello World' and I save. The input becomes empty and the red errors appears.

I tried with markAsTouched() or markAsDirty but the same results happens.

How I can click the button and leave the input without errors?

This is what I get, I want an empty with no errors input.

enter image description here


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

There is a function for this on the form object.

this.myForm.resetForm();

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...