html - 如何为匹配给定值的元素设置 id？

Question

我在 Angular 7 中有以下内容:

<th *ngFor="let day of weekDays"><div>{{day}}</div></th>

但想设置 <th id="today"对于所有weekDays中的单个元素对应/等于 today .

鉴于:

  this.today = "Fri 5/7";

结果应该是:

<th id="today"><div>Fri 5/7</div></th>
<th><div>Sat 6/7</div></th>
<th><div>Sun 7/7</div></th>
<th><div>Mon 8/7</div></th>
<th><div>Tue 9/7</div></th>
<th><div>Wed 10/7</div></th>
<th><div>Thu 11/7</div></th>

我该怎么做？

Answer 1

尝试这样的事情

 <th *ngFor="let day of weekDays" [attr.id]="today==day?'today':null"><div>{{day}}</div></th>