allow only numeric input in angular 7

Angular 7 Directive - Allow Only Numeric in Textbox Example

How to restrict numbers and special characters input in textbox Angular 7?
I am sharing an example for allow only numeric in Textbox Angular 7, following steps involved:-
1.      Create Angular directive to allow only numeric input
2.      Import this directive in NgModule
3.      Use above created directive in your components to apply this

Let’s see the example –
Create Directive to allow only numeric input –
import { Directive, ElementRef, HostListener, Input } from '@angular/core';

  selector: '[OnlyNumeric]'
export class OnlyNumericDirective {

  constructor(private _el: ElementRef) { }

  @HostListener('input', ['$event']) onInputChange(event) {
    const initalValue = this._el.nativeElement.value;
    this._el.nativeElement.value = initalValue.replace(/[^0-9.]*/g, '');
    if ( initalValue !== this._el.nativeElement.value) {

Import directive in NgModule
import { OnlyNumericDirective } from './directive/only-numeric.directive';

  declarations: [
  imports: [
  providers: [
  bootstrap: [AppComponent]
export class AppModule { }

Components – The Interest rate field should be only numeric input by using the directive – OnlyNumeric.
<input type="text" OnlyNumeric required [(ngModel)]="model.InterestRate" id="InterestRate" name="InterestRate" class="form-control" placeholder="Interest rate">

Result looks like –
Stayed Informed - Allow Only Numbers Input in Textbox in Angular 7

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