您如何在“*ngfor”循环中呼吁单击复选框的值？

Question

我试图将“单击”项目的值调用为 *ngfor循环中的一个。到目前为止，这是我的代码：

html：

<form [formGroup]='skillChoice'>
...

  <li *ngFor='let skill of skills'>
    <mat-checkbox
      [disabled]='enableSkill(skill)'
      [formControlName]='skill'
      (click)='onClick(skill)'
      >
       {{ skill }}
    </mat-checkbox>
  </li>

ts：

  ngOnInit(): void{
    this.skillChoice.valueChanges.subscribe(val => {
             // val = {skill1: true, skill2: false, skill3:false...}
      ... //other various code
      let skillTracker = new Array()
        // skillTracker needs to be an array of recently clicked items, 
        // putting them in order of when they were clicked, not 
        // alphabetically.
           // i.e. skillTracker = [skill1, skill5, skill3] 
           //  if skill1 is clicked first, and skill3 is clicked last
    }
  }
...
  onClick(skill: string) {
    return skill
  }

在我的研究中，我发现使用this.skillchoice.get（“＆lt;在此处插入技能名称”）会读取Boolean值技能。但这不是我想要的。我希望它可以阅读并打印val数组的“技能”键。有没有办法调用在valuechanges.subscribe中单击的“事件”，而无需为循环创建val中的技能循环？