如何从代码中刷新ngIf方法调用

在subscribe中填写的模板中生成成员变量对您有用吗?如在 ts

showCompleteButton = {};

yourApiCall.subscribe(ars => {
 this.ars = ars;
 ars.forEach(ar => {
   this.showCompleteButton[ar] = this.showCompleteButton(ar);
   //do not know what type ar is but you get the idea...
 });

在HTML中:

<td *ngIf="showCompleteButton[ar]">

旁注:从模板调用函数对性能不好,每个周期都会反复调用。