如何在angular 2中验证输入type="text“最大长度问题

<form>
  <input type="text" [formControl]="myInput">
</form>

import { Component } from '@angular/core';
import { FormControl, Validators } from '@angular/forms';

@Component({
  selector: 'app-my-component',
  templateUrl: './my-component.component.html',
  styleUrls: ['./my-component.component.css']
})
export class MyComponent {
  myInput = new FormControl('', Validators.maxLength(10));
}

<form>
  <input type="text" [formControl]="myInput">
  <div *ngIf="myInput.invalid && (myInput.dirty || myInput.touched)">
    <div *ngIf="myInput.errors.maxLength">
      输入超过最大长度限制。
    </div>
  </div>
</form>