Vue.component('zpagenav', { 
 template: `<nav class="zpagenav">` + 
     `<ul class="page-ul">` + 
      `<li v-bind:key="index" v-for="(item,index) in pageList" v-bind:class ="item.class" @click.stop="setPage(item)" v-html="item.html">` + 
      `</li>` + 
     `</ul>` + 
     `<span class="total">共 {{total}} 條</span>` + 
    `</nav>`, 
 props: { 
  prevHtml: String, 
  nextHtml: String, 
  page: Number, 
  total: Number, 
  pageSize: Number, 
  maxPage: Number 
 }, 
 computed: { 
  pageList: function () { 
   var _this = this, pageList = []; 
   let pageCount = Math.ceil(_this.total / _this.pageSize); 
   let page = _this.page; 
   let prevHtml = _this.prevHtml ? _this.prevHtml : '<'; 
   let nextHtml = _this.nextHtml ? _this.nextHtml : '>'; 
   let maxPage = _this.maxPage ? _this.maxPage : 9; 
 
   let hasPrev = page > 1; 
   let hasNext = page < pageCount; 
 
   //上一頁 
   pageList.push({ 
    class: hasPrev ? '' : 'disabled', 
    page: hasPrev ? page - 1 : page, 
    html: prevHtml 
   }); 
 
   //首頁 
   pageList.push({ 
    class: page == 1 ? 'active' : '', 
    page: 1, 
    html: 1 
   }); 
 
   var p0 = Math.floor(maxPage / 2); 
   var p1 = 1 + 2 + p0; //首頁+省略至少2個頁碼+中間頁面數(shù)的一半 
 
   var start, end; 
   if (page >= p1) { 
    start = page - p0; 
    //前置省略號 
    pageList.push({ 
     class: 'dot', 
     page: page, 
     html: '...' 
    }); 
   } else { 
    start = 2; 
   } 
 
   var p2 = page + p0; 
   if (p2 < pageCount) { 
    end = p2; 
   } else { 
    end = pageCount - 1; 
   } 
 
 
   //頁碼列表 
   for (let i = start; i <= end; i++) { 
    pageList.push({ 
     class: page == i ? 'active' : '', 
     page: i, 
     html: i 
    }); 
   } 
 
 
   if (end < pageCount - 1) { 
    //后置省略號 
    pageList.push({ 
     class: 'dot', 
     page: page, 
     html: '...' 
    }); 
   } 
 
 
   //尾頁 
   if (pageCount > 1) { 
    pageList.push({ 
     class: page == pageCount ? 'active' : '', 
     page: pageCount, 
     html: pageCount 
    }); 
   } 
 
   //下一頁 
   pageList.push({ 
    class: hasNext ? '' : 'disabled', 
    page: hasNext ? page + 1 : page, 
    html: nextHtml 
   }); 
 
   return pageList; 
  } 
 }, 
 methods: { 
  setPage: function (item) { 
   if (item.class == '') { 
    this.$emit('pagehandler', item.page); 
   } 
  } 
 } 
});