• html

<button #myButton1 ion-button color="primary" class="button1" (click)="changeStyle1()">Click me1</button>

• scss

.button1 {
    opacity: 1;
    transition: 2s linear !important;
  }

• ts

//引用
import { Component,ViewChild,Renderer,ElementRef } from '@angular/core';

@ViewChild('myButton1',{read:ElementRef}) myButton1;

constructor( public renderer:Renderer) 
{
}

changeStyle1()
{
     this.renderer.setElementStyle(this.myButton1.nativeElement,"opacity","0");
}

this.renderer.setElementStyle(this.myButton1.nativeElement,"style参数"," value");