/TypeScript/Preventing letters from being placed in an input ts

Preventing letters from being placed in an input ts

  validateNumber(event) {
    const keyCode = event.keyCode;

    const excludedKeys = [8, 37, 39, 46];

    if (!((keyCode >= 48 && keyCode <= 57) ||
      (keyCode >= 96 && keyCode <= 105) ||
      (excludedKeys.includes(keyCode)))) {
      event.preventDefault();
    }
  }

Source: stackoverflow.com

Preventing letters from being placed in an input ts

<input type="password" placeholder="Enter Mobile no" formControlName="mobile_no" (keydown)="validateNumber($event)">

Source: stackoverflow.com

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