我想在Angular 9中全局限制输入类型为文本的字母数字

filterInput(value: string) {
  const filteredValue = value.replace(/[^a-zA-Z0-9]/g, '');
  if (filteredValue !== value) {
    this.inputValue = filteredValue;
  }
}

import { FormBuilder, Validators } from '@angular/forms';
// ...
constructor(private fb: FormBuilder) {
  this.myForm = this.fb.group({
    inputControl: ['', Validators.pattern(/^[a-zA-Z0-9]*$/)]
  });
}

<form [formGroup]="myForm">
  <input type="text" formControlName="inputControl">
</form>

ngOnInit() {
  this.myForm.get('inputControl').valueChanges.subscribe(value => {
    const filteredValue = value.replace(/[^a-zA-Z0-9]/g, '');
    if (filteredValue !== value) {
      this.myForm.get('inputControl').setValue(filteredValue, { emitEvent: false });
    }
  });
}