小编ill*_*ill的帖子

我正在尝试使用 bootstrap4.3 类显示下拉菜单，但在菜单上选择后什么都不会发生，我使用的是 angular 8 版本。

<div class="dropdown">
  <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"> Dropdown button </button>
  <div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
    <a class="dropdown-item" href="#">Action</a>
    <a class="dropdown-item" href="#">Another action</a>
    <a class="dropdown-item" href="#">Something else here</a>
  </div>
</div>

MatDatePicker,其过滤器定义如下:

<mat-form-field class="example-full-width">
  <input matInput [matDatepickerFilter]="myFilter" [matDatepicker]="picker" placeholder="Choose a date">
  <mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
  <mat-datepicker #picker></mat-datepicker>
</mat-form-field>

export class DatepickerFilterExample {
  someDateToBlock: number = 3;
  myFilter = (d: Date): boolean => {
    const day = d.getDay();
    // THIS FUNCTION CANNOT ACCESS THE VARIABLE 'someDateToBlock'
    return day !== 0 && day !== 6;
  }
}

我想在过滤器函数中访问变量some​​DateToBlock(或任何其他).是否有解决方法使这个可能吗？