<div *ngIf="condition; else elseBlock">
         
<button class="xx" *ngIf="flag" (click)="doFunct()">Next</button>
   
--While (t/f boolean variable called "flag") is true
  This button will be visible + click button executes function
  Once this "flag" becomes false this button disapears

 
<ul>     
    <li *ngFor =#customer of customers>         
        {{customer.name}}     
    </li>
<div *ngIf=”vm.isVIP”> 
    <h3> VIP Customer </h3> 
</div>
 

 
<ul>     
    <li *ngFor =#customer of customers>         
        {{customer.name}}     
    </li> 
</ul> 
<div *ngIf=”vm.isVIP”> 
    <h3> VIP Customer </h3> 
</div>
 

content_copy
<ng-template [ngIf]="condition"><div>Content to render when condition is
true.</div></ng-template>

content_copy
<div *ngIf="condition as value; else elseBlock">{{value}}</div>
<ng-template #elseBlock>Content to render when value is null.</ng-template>

 
<ul>     
  
    <h3> VIP Customer </h3> 
</div>
 

content_copy
<div *ngIf="condition">Content to render when condition is true.</div>