Vue 分页封装包括像素计算

1. 在 src 底下建立一个 utils （工具类文件夹，用于存放各种工具） 文件夹

2. utils 文件夹底下放各种 工具类的 js 文件

// 备注： 这个工具主要用来计算屏幕高度的

Math.easeInOutQuad = function(t, b, c, d) {
  t /= d / 2
  if (t < 1) {
    return c / 2 * t * t + b
  }
  t--
  return -c / 2 * (t * (t - 2) - 1) + b
}

// requestAnimationFrame for Smart Animating http://goo.gl/sx5sts
var requestAnimFrame = (function() {
  return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || function(callback) { window.setTimeout(callback, 1000 / 60) }
})()

/**
 * Because it's so fucking difficult to detect the scrolling element, just move them all
 * @param {number} amount
 */
function move(amount) {
  document.documentElement.scrollTop = amount
  document.body.parentNode.scrollTop = amount
  document.body.scrollTop = amount
}

function position() {
  return document.documentElement.scrollTop || document.body.parentNode.scrollTop || document.body.scrollTop
}

/**
 * @param {number} to
 * @param {number} duration
 * @param {Function} callback
 */
export function scrollTo(to, duration, callback) {
  const start = position()
  const change = to - start
  const increment = 20
  let currentTime = 0
  duration = (typeof (duration) === 'undefined') ? 500 : duration
  var animateScroll = function() {
    // increment the time
    currentTime += increment
    // find the value with the quadratic in-out easing function
    var val = Math.easeInOutQuad(currentTime, start, change, duration)
    // move the document.body
    move(val)
    // do the animation unless its over
    if (currentTime < duration) {
      requestAnimFrame(animateScroll)
    } else {
      if (callback && typeof (callback) === 'function') {
        // the animation is done so lets callback
        callback()
      }
    }
  }
  animateScroll()
}

　　

3. 在 src 文件夹底下建立 components （公共类文件，多数用于组件封装）

4. components 文件夹底下建立 Pagination（分页） 文件夹

<template>
  <div class="pagination-container">
    <div :class="{ hidden: hidden }" class="pagination-container">
      <el-pagination
        :background="background"
        :current-page.sync="currentPage"
        :page-size.sync="pageSize"
        :layout="layout"
        :page-sizes="pageSizes"
        :total="total"
        v-bind="$attrs"
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
      />
    </div>
  </div>
</template>

<script>
import { scrollTo } from "@/utils/刚刚上面src底下的 utils 文件夹 底下建立的 js 文件名字";

export default {
  name: "Pagination",
  props: {
    total: {
      required: true,
      type: Number,
    },
    page: {
      type: Number,
      default: 1,
    },
    limit: {
      type: Number,
      default: 20,
    },
    pageSizes: {
      type: Array,
      default() {
        return [10, 20, 30, 50];
      },
    },
    layout: {
      type: String,
      default: "total, sizes, prev, pager, next, jumper",
    },
    background: {
      type: Boolean,
      default: true,
    },
    autoScroll: {
      type: Boolean,
      default: true,
    },
    hidden: {
      type: Boolean,
      default: false,
    },
  },
  computed: {
    currentPage: {
      get() {
        return this.page;
      },
      set(val) {
        this.$emit("update:page", val);
      },
    },
    pageSize: {
      get() {
        return this.limit;
      },
      set(val) {
        this.$emit("update:limit", val);
      },
    },
  },
  methods: {
    handleSizeChange(val) {
      this.$emit("pagination", { page: this.currentPage, limit: val });
      if (this.autoScroll) {
        scrollTo(0, 800);
      }
    },
    handleCurrentChange(val) {
      this.$emit("pagination", { page: val, limit: this.pageSize });
      if (this.autoScroll) {
        scrollTo(0, 800);
      }
    },
  },
};
</script>

<style scoped>
.pagination-container {
  background: #fff;
  /* padding: 32px 16px; */
  margin: 30px 0 50px;
}
.pagination-container.hidden {
  display: none;
}
.pagination-container .el-pagination {
  position: initial;
}
</style>

 

5. 在 main.js 中全局挂载分页组件

Vue.component('Pagination', Pagination)

　

6. vue 文件中应用

<pagination v-show="total > 10" :total="total" :page.sync="query.pageNum" :limit.sync="query.pageSize"  />
@pagination="列表接口"