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Angular7 Form Validation on button push or property not in html


By : jmh
Date : October 18 2020, 08:10 AM
Hope that helps You can add a required control to your form, and set value to it when the user click on the button:
TS:
code :
 userForm: FormGroup = this.fb.group({
    name: ['My name', [Validators.required]],
    button: [null, [Validators.required]],
 });
<button type="button" (click)="userForm.get('button').setValue(true)">
  Click required
</button>


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Radio Button Validation HTML FORM


By : user5756991
Date : March 29 2020, 07:55 AM
it fixes the issue One solution without using client-side scripting would be to select one by default using CHECKED:
code :
<input type="radio" name="amount" value="25" id="25" CHECKED /> 

Angular7 Reactive Forms input property value does not change in controller/component, only on the HTML markup


By : user2000104
Date : March 29 2020, 07:55 AM
Any of those help You should create the FormGroup once the component view is initialized. So you can implement AfterViewInit and put the following code in ngAfterViewInit function.
code :
ngAfterViewInit(){
  this.categoryForm = new FormGroup({
    categoryTitle: new FormControl(this.categoryTitle, [Validators.minLength(3), Validators.maxLength(50)]),
    categoryDescription: new FormControl(this.categoryDescription, [Validators.minLength(5), Validators.maxLength(200)])
  })
}

Angular7: Form validation differnces


By : user2749260
Date : March 29 2020, 07:55 AM
will help you So why does the console logs differ? We can start by saying that angular forms are in fact asynchronous, so that is part of the answer. Secondly we have to know how console log works. As stated here:
code :
setTimeout(() => {
  console.log(this.customerForm.get('docs').get(type).valid);
},100);

Angular7 reactive form material time input validation


By : user3061135
Date : March 29 2020, 07:55 AM
I wish did fix the issue. You can use the HTML type="time" or if you want more you can simply use a library like: JsDaddy/ngx-mask found on Github. Use it like this:
HTML with MatInput:
code :
<input formControlName="Time" matInput placeholder="Time" type="time" />
<input formControlName="Time" matInput placeholder="Time" mask="Hh:m0" />

html button is activating asp validation in html input form - Why?


By : Rob Biehl
Date : March 29 2020, 07:55 AM
around this issue I'd want to ask why after clicking on my custom button that just appends text to div that's inside form, then it activates asp validation of that form? , Set your button type as button
code :
<button type="button" id="appendChild" onclick="addText()">add new thing</button>
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