前端分页

 handleCurrentChangeDetail(val, datas) {

            this.detailPage.currentPage = val

            let list = datas && datas.length ? datas : this.nowDetailList;

            this.getPageList(list)

          },

           // 获取分页列表

          getPageList (list) {

            const {

              currentPage,

              pageSize

            } = this.detailPage

            const copyList = list.concat()

            this.detailPage.total = copyList.length

            this.detailList = copyList.slice((currentPage - 1) * pageSize, currentPage * pageSize)

          },