# Angular Material 滑鼠滑過的時候展開/關閉Menu ```angular <a mat-menu-item [matMenuTriggerFor]="animals" #trigger="matMenuTrigger" (mouseenter)="trigger.openMenu()" (mouseleave)="trigger.closeMenu()" >Link 1</a> <mat-menu #animals="matMenu" xPosition="after" [hasBackdrop]="false">aaa</mat-menu> ```