<ul class="flex fwrap space-between"> <li v-for="(item,index) in course" :key="index"> //todo </li> <li v-show="course.length%4!=0" v-for="(item1,index1) in 4-course.length%4" :key="index1+‘.‘"></li> </ul> // 每行4个
flex布局space-between(around)最后一行左对齐
原文：https://www.cnblogs.com/223zzm/p/12035139.html