[已解決] ReactiveForm 的 Validator --- minLength驗證器無效果

[viacharles]

如題…
errors只列印出required
試過minLength(),maxLength(),parttern都列印不出來…
是哪裡寫錯了嗎…？？
列印出的結果－－－

startNum: FormControl
errors:
required: true
__proto__: Object
pristine: true
status: "INVALID"

程式碼
html

<form  [formGroup]="form">
<input 
type="number" 
class="input" 
formControlName="startNum">

ts

public form!: FormGroup;
constructor(private fb: FormBuilder,) {}
ngOnInit(): void {
    this.form = this.fb.group({
     startNum: new FormControl('',{
        validators: [
          Validators.minLength(4),
          Validators.required,
          Validators.pattern('\d{7}')
        ],
      }),
    });
  }

找不到問題出在哪＠＠~感恩~

[viacharles]

解決了 ,