I have a input field where requirement is that it has 0 intially set on change of value that 0 is removed and number is added but that 0 is removed only if key pressed by user is a number now the issue arrises that when i do use a input event it take my value as sing quoted string as ‘8’ i had used replace method but what if i press backspace also on focus out it add a .00 to a number if its there but i am also found a issue when my number is initially 0 and i press a non numberic value it makes my number set ” and also on bacspace keypress it should allow backspace and remove zero but should not give error that is also case so its a mix of various cases

<input type="text" class="someclass" [readOnly]="isView || isEdit" placeholder=""
                        formControlName="somename" mask="separator.2" thousandSeparator="," (input)="removeZeroOnKeydown($event)"
                        (focusout)="onFixedAmount('somename')" separatorLimit="99999999999999">
                     <label class="label">Some Label$</label>

   removeZeroOnKeydown(event: InputEvent) {
    let inputElement = event.target as HTMLInputElement;

    //Get FormControl Name on keydown
    let controlName = inputElement.getAttribute('formControlName');
    
    if (!controlName) return;

    let control = this.myformname.controls[controlName];

    //Check Formcontrol input field value
    let controlValue = control.value;

    // If the input field only contains "0", replace it with the input data
    if (controlValue == 0 || controlValue == '') {

    //Get the keypressed value
    let inputData = (event as InputEvent).data;

    //let numberValue = inputData.replace(/'/g, "");
    
    if (inputData && /^d$/.test(inputData.replace(/'/g, ""))) {

      //Set value of keypressed
      control.setValue(inputData);
    }
    else{
      if(controlValue == 0 && controlValue){
      control.setValue(0);
      }
      else if(!/^d$/.test(inputData.replace(/'/g, "")) && controlValue != 0) {
        control.setValue('');
      }
    }
  }
}

 onFixedAmount(FormControlName) {
    let amount = this.myformname.controls[FormControlName].value;
    if (amount) {
      this.myformname.controls[FormControlName].setValue(amount ? Number(amount).toFixed(2) : 0);
    }
  }