(1). data()中引入:

icon: require('@/assets/images/modules-a5.png')

icon: require('../../assets/images/modules-picture.png')

(2). style中引入:

background: url(../../assets/images/entry-icon.png) 0 0 no-repeat;

(3). html中引入:

<img src="@/assets/images/a-1.png" alt="">

<img src="../../assets/images/a-1.png" alt="">