PrimeNg多选，默认全选

import { Component, OnInit } from '@angular/core';
import { SelectItem } from 'primeng/api';

@Component({
  selector: 'app-my-component',
  template: `
    <p-multiSelect [options]="options" [(ngModel)]="selectedOptions"></p-multiSelect>
  `
})
export class MyComponent implements OnInit {
  options: SelectItem[];
  selectedOptions: any[];

  ngOnInit() {
    this.options = [
      { label: 'Option 1', value: 'option1' },
      { label: 'Option 2', value: 'option2' },
      { label: 'Option 3', value: 'option3' },
      // 添加更多选项...
    ];

    // 默认全选所有选项
    this.selectedOptions = this.options.map(option => option.value);
  }
}