Vue 分页器组件[通俗易懂]

<template>
  <div class="pagination">
    <button>上一页</button>
    <button @click="changecurentpage(1)" v-if="startEnd.start > 1">1</button>
    <button v-if="startEnd.start > 2">···</button>

    <button @click="changecurentpage(startEnd.start+index)" v-for="(item,index) in continuPage" :key="index">{
  
  {startEnd.start+index}}</button>


    <button v-if="startEnd.end < pagesTotal -1">···</button>
    <button @click="changecurentpage(pagesTotal)" v-if="startEnd.end < pagesTotal">{
  
  {pagesTotal}}</button>
    <button>下一页</button>

    <button style="margin-left: 30px">{
  
  {currentPageNo}}/{
  
  {pagesTotal}}页</button>
  </div>
</template>

<script>
export default {
  props: ['currentPageno','pageSize','total','continuPage'],
  data() {
    return {
      currentPageNo : this.currentPageno
    }
  },
  methods: {
    changecurentpage(currentPageNo) {
      // if(this.startEnd.end)
      this.currentPageNo = currentPageNo
    }
  },
  computed: {
    pagesTotal() {
      return Math.ceil(this.total/this.pageSize)
    },
    startEnd() {
      let {currentPageNo,continuPage} = this
      let start = currentPageNo-parseInt(continuPage/2)
      if (start < 1) start = 1
      let end = currentPageNo+parseInt(continuPage/2)
      if (end > this.pagesTotal) {
        end = this.pagesTotal
        start = end - continuPage +1
      }
      return {start, end}
    }
  }
};
</script>

<style lang="less" scoped>
.pagination {
  text-align:center;
  button {
    margin: 0 5px;
    background-color: #f4f4f5;
    color: #606266;
    outline: none;
    border-radius: 2px;
    padding: 0 4px;
    vertical-align: top;
    display: inline-block;
    font-size: 13px;
    min-width: 35.5px;
    height: 28px;
    line-height: 28px;
    cursor: pointer;
    box-sizing: border-box;
    text-align: center;
    border: 0;

    &[disabled] {
      color: #c0c4cc;
      cursor: not-allowed;
    }

    &.active {
      cursor: not-allowed;
      background-color: #409eff;
      color: #fff;
    }
  }
}
</style>