VUE实现一个分页组件的示例

<template>  <ul class="mo-paging">    <!-- prev -->    <li :class="['paging-item', 'paging-item--prev', {'paging-item--disabled' : index === 1}]" @click="prev">prev</li>     <!-- first -->    <li :class="['paging-item', 'paging-item--first', {'paging-item--disabled' : index === 1}]" @click="first">first</li>     <li :class="['paging-item', 'paging-item--more']" v-if="showPrevMore">...</li>     <li :class="['paging-item', {'paging-item--current' : index === pager}]" v-for="pager in pagers" @click="go(pager)">{{ pager }}</li>     <li :class="['paging-item', 'paging-item--more']" v-if="showNextMore">...</li>     <!-- last -->    <li :class="['paging-item', 'paging-item--last', {'paging-item--disabled' : index === pages}]" @click="last">last</li>     <!-- next -->    <li :class="['paging-item', 'paging-item--next', {'paging-item--disabled' : index === pages}]" @click="next">next</li>  </ul></template>

.mo-paging {  display: inline-block;  padding: 0;  margin: 1rem 0;  font-size: 0;  list-style: none;  user-select: none;  > .paging-item {    display: inline;    font-size: 14px;    position: relative;    padding: 6px 12px;    line-height: 1.42857143;    text-decoration: none;    border: 1px solid #ccc;    background-color: #fff;    margin-left: -1px;    cursor: pointer;    color: #0275d8;    &:first-child {      margin-left: 0;    }    &:hover {      background-color: #f0f0f0;      color: #0275d8;    }    &.paging-item--disabled,    &.paging-item--more{      background-color: #fff;      color: #505050;    }    //禁用    &.paging-item--disabled {      cursor: not-allowed;      opacity: .75;    }    &.paging-item--more,    &.paging-item--current {      cursor: default;    }    //选中    &.paging-item--current {      background-color: #0275d8;      color:#fff;      position: relative;      z-index: 1;      border-color: #0275d8;    }  }}

export default {  name : 'MoPaging',  //通过props来接受从父组件传递过来的值  props : {     //页面中的可见页码，其他的以...替代, 必须是奇数    perPages : {       type : Number,      default : 5     },     //当前页码    pageIndex : {      type : Number,      default : 1    },     //每页显示条数    pageSize : {      type : Number,      default : 10    },     //总记录数    total : {      type : Number,      default : 1    },   },  methods : {    prev(){      if (this.index > 1) {        this.go(this.index - 1)      }    },    next(){      if (this.index < this.pages) {        this.go(this.index + 1)      }    },    first(){      if (this.index !== 1) {        this.go(1)      }    },    last(){      if (this.index != this.pages) {        this.go(this.pages)      }    },    go (page) {      if (this.index !== page) {        this.index = page        //父组件通过change方法来接受当前的页码        this.$emit('change', this.index)      }    }  },  computed : {     //计算总页码    pages(){      return Math.ceil(this.size / this.limit)    },     //计算页码，当count等变化时自动计算    pagers () {      const array = []      const perPages = this.perPages      const pageCount = this.pages      let current = this.index      const _offset = (perPages - 1) / 2        const offset = {        start : current - _offset,        end  : current + _offset      }       //-1, 3      if (offset.start < 1) {        offset.end = offset.end + (1 - offset.start)        offset.start = 1      }      if (offset.end > pageCount) {        offset.start = offset.start - (offset.end - pageCount)        offset.end = pageCount      }      if (offset.start < 1) offset.start = 1       this.showPrevMore = (offset.start > 1)      this.showNextMore = (offset.end < pageCount)       for (let i = offset.start; i <= offset.end; i++) {        array.push(i)      }       return array    }  },  data () {    return {      index : this.pageIndex, //当前页码      limit : this.pageSize, //每页显示条数      size : this.total || 1, //总记录数      showPrevMore : false,      showNextMore : false    }  },  watch : {    pageIndex(val) {      this.index = val || 1    },    pageSize(val) {      this.limit = val || 10    },    total(val) {      this.size = val || 1    }  }}

<template>  <div class="list">    <template v-if="count">      <ul>        <li v-for="item in items">...</li>      </ul>      <mo-paging :page-index="currentPage" :totla="count" :page-size="pageSize" @change="pageChange">      </mo-paging>    </template>  </div></template><script>  import MoPaging from './paging'  export default {    //显示的声明组件    components : {      MoPaging     },    data () {      return {        pageSize : 20 , //每页显示20条数据        currentPage : 1, //当前页码        count : 0, //总记录数        items : []      }    },    methods : {      //获取数据      getList () {        //模拟        let url = `/api/list/?pageSize=${this.pageSize}¤tPage=${this.currentPage}`        this.$http.get(url)        .then(({body}) => {           //子组件监听到count变化会自动更新DOM          this.count = body.count          this.items = body.list        })      },       //从page组件传递过来的当前page      pageChange (page) {        this.currentPage = page        this.getList()      }    },    mounted() {      //请求第一页数据      this.getList()    }   }</script>