Angular 6 - How to set dynamic type in html input using angular input decorator

Question

I'm passing dynamic type to input using angular @Input decorator. It's doesn't working and showing NaN value => type="NaN". How I can acheive this? Here is my code:

datepicker.html

<input  class="{{ value ? 'has-value' : '' }}"
        type="{{inputType}}"
        [(ngModel)]="value"
        [max]="getToday()"/>

datepicker.ts

@Input() inputType: string;

app.html

<app-datepicker [inputType]="datetime-local"[(ngModel)]="example1"
      (ngModelChange)="filter()"></app-datepicker>

<app-datepicker [inputType]="date"[(ngModel)]="example2"
      (ngModelChange)="filter()"></app-datepicker>

John · Accepted Answer · 2019-06-12 08:31:35Z

1

You need to add '' to your bindings, otherwise the datepicker assumes that you are passing an object, not a string. Like this: [inputType]="'datetime-local'"

<app-datepicker [inputType]="'datetime-local'"[(ngModel)]="example1"
      (ngModelChange)="filter()"></app-datepicker>

<app-datepicker [inputType]="'date'"[(ngModel)]="example2"
      (ngModelChange)="filter()"></app-datepicker>

Alternatively, you can remove the [] from the attribute like this: Then you do not need to add the ''

<app-datepicker inputType="datetime-local"[(ngModel)]="example1"
      (ngModelChange)="filter()"></app-datepicker>

<app-datepicker inputType="date"[(ngModel)]="example2"
      (ngModelChange)="filter()"></app-datepicker>

answered Jun 12, 2019 at 8:31

John

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Sachin Gupta · Accepted Answer · 2019-06-12 08:36:37Z

1

You need to bind type to a variable in

ChildComponent.html

<input [type]='type'>

ChildComponent.ts

@Input() type;

App.component.html

<select (change)='change($event)'>
  <option>number</option>
  <option>date</option>
  <option>datetime-local</option>
</select>

<app-child [type]='type'></app-child>

{{type}}

App.component.ts

type;
change(ev ) {
 this.type = event.target.value;
}

answered Jun 12, 2019 at 8:36

Sachin Gupta

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Angular 6 - How to set dynamic type in html input using angular input decorator

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ChildComponent.html

ChildComponent.ts

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App.component.ts

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2 Answers 2

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