基于Vue的简单通用分页组件

分页组件是每一个系统里必不可少的一个组件，分页组件分为两部分。第一部分是模版部分，用于显示当前分页组件的状态，例如正在获取数据、没有数据、没有下一页等等；第二部分是分页数据对象，用于封装一个分页组件的属性和方法，例如获取数据的 url、当前第几页(page)、每次加载条数(count)、一共有多少页(totalPage)等等，方法可能会有上一页、下一页、处理数据等等。

分页数据对象

import base from '@/api/base'

export default class Pagination {

  constructor({ url, processFunc, processExt, count = 10, isMock = false }) {

    // 数据访问地址

    this.url = url

    // 数据集合

    this.list = []

    // 第几页

    this.page = 1

    // 一共几页

    this.totalPage = 1

    // 加载数据条数

    this.count = count

    // 数据处理函数

    this.processFunc = processFunc

    // 错误处理函数

    this.processExt = processExt

    // 正在加载中

    this.loading = false

    // 参数

    this.params = {}

    // 是否底部

    this.reachBottom = false

    // 是否为空

    this.empty = true

    // 是否需要清除

    this.toClear = false

    // 是否为mock数据

    this.isMock = isMock

  }

  /**

   * 加载下一页数据

   */

  async next(args) {

    if (this.loading) {

      // console.warn('page loading!')

      return this

    }

    const param = {

      pageNo: this.page,

      pageSize: this.count

    }

    // 附加参数

    this.loading = true

    try {

      Object.assign(param, args)

      let res

      let data

      try {

        res = await base.get(this.url, param)

        data = res.data

      } catch (e) {

        if (typeof this.processExt === 'function') {

          data = this.processExt(e)

        } else {

          throw new Error(e)

        }

      }

      // 底部判断

      if (data === null || data.length < 1) {

        if (this.toClear) {

          this.clear()

        } else {

          this.reachBottom = true

        }

        return this

      }

      this.empty = false

      // 处理数据

      this._processData(data)

      // 设置数据

      if (this.toClear) {

        this.list = data

        this.toClear = false

      } else {

        this.list = this.list.concat(data)

      }

      ++this.page

      this.totalPage = res.page.totalPages

      if (

        (res.page && res.page.page === res.page.totalPages) ||

        data.length < this.count

      ) {

        this.reachBottom = true

      }

      return this

    } finally {

      this.loading = false

    }

  }

  /**

   * 恢复到第一页

   */

  reset() {

    this.empty = true

    this.toClear = true

    this.page = 1

    this.reachBottom = false

  }

  clear() {

    this.toClear = false

    this.page = 1

    this.list = []

  }

  /**

   * 处理数据（私有）

   */

  _processData(data) {

    if (this.processFunc) {

      for (let i in data) {

        const result = this.processFunc(data[i])

        if (result) {

          data[i] = result

        }

      }

    }

  }

}

分页模版

<template>

  <div class="z-page-stat">

    <p v-show="page.loading" class="page-loading">

      <span class="ign-loading"></span>

    </p>

    <div

      class="u-more-btn"

      v-show="showLoadMore && !page.reachBottom && !page.loading && !page.empty"

      @click="$emit('nextPage')"

    >

      <span>查看更多</span>

    </div>

    <p class="reach-btm" v-show="showBtmTx && !page.empty && page.reachBottom">

      到底了~

    </p>

    <div class="page-empty" v-show="!page.loading && page.empty">

      <div class="empty-inner">

        <div class="img-bg" v-if="emptyImg">

          <img

            v-if="!emptyImg || emptyImg == 1"

            src="../../img/empty-page.png"

            alt=""

          />

        </div>

        <p class="tx">{{emptyText}}</p>

        <div class="empty-ctn">

          <slot name="empty"></slot>

        </div>

      </div>

    </div>

    <slot name="other"></slot>

  </div>

</template>

<script>

  export default {

    name: 'pageStatus',

    data() {

      return {}

    },

    props: {

      page: {},

      emptyImg: {},

      emptyText: {

        type: String,

        default: '暂时没有数据'

      },

      showLoadMore: {

        // 是否显示加载更多按钮

        type: Boolean,

        default: false

      },

      showBtmTx: {

        // 到底了文字要不要显示

        type: Boolean,

        default: true

      }

    },

    components: {},

    created: function() {},

    mounted: function() {},

    methods: {}

  }

</script>

<style lang="stylus" rel="stylesheet/stylus">

  .z-page-stat

    text-align center

    letter-spacing 2px

    color #757575

    line-height 60px

    .page-loading

      .ign-loading

        border-radius 100%

        margin 16px 0

        animation-fill-mode both

        border 2px solid #e8473f /* no */

        border-bottom-color transparent

        height 25px /* no */

        width 25px /* no */

        background transparent !important

        display inline-block

        animation rotate 1s 0s linear infinite

    .page-empty

      position absolute

      left 0

      width 100%

      top 50%

      transform translate(0, -50%)

      .empty-inner

        width 320px

        margin 0 auto

      .img-bg

        position relative

        display inline-block

        width 254px

        height 254px

        background #d6d6d6

        border-radius 50%

        margin-bottom 20px

      img

        width 94px

        margin-top 28px

      .tx

        color #8c8c8c

    .empty-ctn

      .u-btn

        margin-top 90px

        margin-left 20px

        border 2px solid #464646 /* no */

        box-shadow none

        width 168px

        height 62px

        line-height 62px

</style>

使用组件

<template>

  <div>

    <div class="card-content" v-for="act in page.list" :key="act.id">

      <p>

        {{act.title}}

      </p>

    </div>

    <p-status :page="page"></p-status>

  </div>

</template>

<script>

  import { mainList } from '@/api/activity'

  import PageStatus from 'comps/pageStatus.vue'

  export default {

    data() {

      return {

        page: mainList()

      }

    },

    mixins: [appPage],

    computed: {},

    created: async function() {

      this.page.next({

        /*传参*/

      })

    },

    components: { 'p-status': PageStatus }

  }

</script>

// @/api/activity

import Pagination from '@/utils/Pagination'

/**

 * 列表

 */

export function mainList() {

  const url = `/activity/activity/list.do`

  return new Pagination({

    url: url

  })

}