Angular 4 allows for checkboxes to be automatically marked as checked when the value is true

Question

Angular 4 allows for checkboxes to be automatically marked as checked when the value is true

I have a question regarding how to automatically check a checkbox under certain conditions. Specifically, I have a situation where the accept() function triggers the onApprovedDateChecked() function with a true parameter. When this happens, I need the checkbox to be checked. Can anyone assist me in resolving this issue?

component.html

 <p-checkbox label="dsd" formControlName="fcont" binary="true" 
                               (onChange)="onChecked($event)"></p-checkbox>

component.ts

    accept(){
      onChecked(true)
    }

   onChecked(e: any){

     //make the checkbox to checked
   }

angular typescript angular4-forms

Answer 1

Answer №1

<p-checkbox label="dsd" [(ngModel)]="status" 
formControlName="fcont" binary="true"(onChange)="onChecked($event)"></p-checkbox>

Make sure to set the value of the status variable before the constructor in your TypeScript file:

    import { Component, OnInit } from '@angular/core';
    import {ActivatedRoute, Router} from '@angular/router';

    @Component({
      selector: 'component',
      templateUrl: './component.html',
      styleUrls: ['./component.scss']
    })
    export class RequestReturnComponent implements OnInit {
    status: boolean = false;
    constructor() {}

    ngOnInit() {}

    accept(){
     onChecked(true)
    }

    onChecked(e: any){
      this.status = true;
    }
  }

Answer 2

<p-checkbox label="dsd" [(ngModel)]="status" 
formControlName="fcont" binary="true"(onChange)="onChecked($event)"></p-checkbox>

Make sure to set the value of the status variable before the constructor in your TypeScript file:

    import { Component, OnInit } from '@angular/core';
    import {ActivatedRoute, Router} from '@angular/router';

    @Component({
      selector: 'component',
      templateUrl: './component.html',
      styleUrls: ['./component.scss']
    })
    export class RequestReturnComponent implements OnInit {
    status: boolean = false;
    constructor() {}

    ngOnInit() {}

    accept(){
     onChecked(true)
    }

    onChecked(e: any){
      this.status = true;
    }
  }

Answer 3

Answer №2

Utilize ngModel with binary attribute to toggle its boolean state

<p-checkbox label="dsd" [(ngModel)]="obj.status" 
formControlName="fcont" binary="true"(onChange)="onChecked($event)"></p-checkbox>

Assign either true or false to obj.status to switch the value.

accept(){
 onChecked(true)
}

onChecked(e: any){
  this.obj.status = true;
}

Answer 4

Utilize ngModel with binary attribute to toggle its boolean state

<p-checkbox label="dsd" [(ngModel)]="obj.status" 
formControlName="fcont" binary="true"(onChange)="onChecked($event)"></p-checkbox>

Assign either true or false to obj.status to switch the value.

accept(){
 onChecked(true)
}

onChecked(e: any){
  this.obj.status = true;
}

Answer 5

Answer №3

If you're looking for a solution to handle asynchronous data in Angular, the async pipe could be your best bet. Here's an example implementation:

@Component({
  selector: 'async-checkbox-pipe',
  template: '<input type="checkbox" [checked]="onApprovedDateChecked | async" /> Async checked'
})
export class AsyncCheckboxPipeComponent {
  onApprovedDateChecked = new Observable<string>((observer: Observer<string>) => {
    // Use the observer to dispatch whether it is checked or not later on
      setTimeout(() => {
        return observer.next(true|false)
      }, 1500);
  });
}

You can find an example of this implementation here: https://stackblitz.com/edit/angular-8cqcph

Answer 6

If you're looking for a solution to handle asynchronous data in Angular, the async pipe could be your best bet. Here's an example implementation:

@Component({
  selector: 'async-checkbox-pipe',
  template: '<input type="checkbox" [checked]="onApprovedDateChecked | async" /> Async checked'
})
export class AsyncCheckboxPipeComponent {
  onApprovedDateChecked = new Observable<string>((observer: Observer<string>) => {
    // Use the observer to dispatch whether it is checked or not later on
      setTimeout(() => {
        return observer.next(true|false)
      }, 1500);
  });
}

You can find an example of this implementation here: https://stackblitz.com/edit/angular-8cqcph

Answer 7

Answer №4

CSS

<div class="styled-div">
  <p>This is a styled paragraph.</p>
</div>

styles.css

.styled-div {
  font-size: 16px;
  color: #333;
}

---script---

//declare variable

numOfClicks: number = 0;

Answer 8

CSS

<div class="styled-div">
  <p>This is a styled paragraph.</p>
</div>

styles.css

.styled-div {
  font-size: 16px;
  color: #333;
}

---script---

//declare variable

numOfClicks: number = 0;

Angular 4 allows for checkboxes to be automatically marked as checked when the value is true

Answer №1

Answer №2

Answer №3

Answer №4

CSS

styles.css

---script---

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