Show validation error when dot or e is typed in to input type=number

I have an input type=number for a Percentage field. I only want the user to enter a number between 0 and 100. I want to disallow any decimal values such as 50.25, 60.2, 70.0. I also want to disallow any usage of exponents such as 2e1, 1e2.

I have tried creating a custom validator but Angular converts 10.0 to 10 and 2e1 to 20 so I am not able to validate control.value.

Restrict the input of the user, so that you wont have this problem, also add the Validators.max and Validators.min to show errors when the limit is exceeded!

import { JsonPipe } from '@angular/common';
import { Component } from '@angular/core';
import {
  FormControl,
  FormGroup,
  FormsModule,
  ReactiveFormsModule,
  Validators,
} from '@angular/forms';
import { bootstrapApplication } from '@angular/platform-browser';
import 'zone.js';

@Component({
  selector: 'app-root',
  standalone: true,
  imports: [FormsModule, ReactiveFormsModule, JsonPipe],
  template: `
  <form [formGroup]="formGroup">
    <input name="num"  id="num" formControlName="num"
      type="number"
      min="1"
      max="100"
      step="1"
      onkeypress="return event.charCode >= 48 && event.charCode <= 57"
      title="Numbers only">
      {{formGroup.controls['num'].errors | json}}
</form>
  `,
})
export class App {
  name="Angular";
  formGroup: FormGroup<any> = new FormGroup({});

  ngOnInit() {
    this.formGroup = new FormGroup({
      num: new FormControl(1, [Validators.min(1), Validators.max(100)]),
    });
  }
}

bootstrapApplication(App);

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