<el-form :model="ruleForm" status-icon :rules="rules" ref="ruleForm" label-width="100px" class="demo-ruleForm">
  <el-form-item label="密码" prop="pass">
    <el-input type="password" v-model="ruleForm.pass" autocomplete="off"></el-input>
  </el-form-item>
  <el-form-item label="确认密码" prop="checkPass">
    <el-input type="password" v-model="ruleForm.checkPass" autocomplete="off"></el-input>
  </el-form-item>
  <el-form-item label="年龄" prop="age">
    <el-input v-model.number="ruleForm.age"></el-input>
  </el-form-item>
  <el-form-item>
    <el-button type="primary" @click="submitForm('ruleForm')">提交</el-button>
    <el-button @click="resetForm('ruleForm')">重置</el-button>
  </el-form-item>
</el-form>
<script>
  export default {
    data() {
      var checkAge = (rule, value, callback) => {
        if (!value) {
          return callback(new Error('年龄不能为空'));
        }
        setTimeout(() => {
          if (!Number.isInteger(value)) {
            callback(new Error('请输入数字值'));
          } else {
            if (value < 18) {
              callback(new Error('必须年满18岁'));
            } else {
              callback();
            }
          }
        }, 1000);
      };
      var validatePass = (rule, value, callback) => {
        if (value === '') {
          callback(new Error('请输入密码'));
        } else {
          if (this.ruleForm.checkPass !== '') {
            this.$refs.ruleForm.validateField('checkPass');
          }
          callback();
        }
      };
      var validatePass2 = (rule, value, callback) => {
        if (value === '') {
          callback(new Error('请再次输入密码'));
        } else if (value !== this.ruleForm.pass) {
          callback(new Error('两次输入密码不一致!'));
        } else {
          callback();
        }
      };
      return {
        ruleForm: {
          pass: '',
          checkPass: '',
          age: ''
        },
        rules: {
          pass: [
            { validator: validatePass, trigger: 'blur' }
          ],
          checkPass: [
            { validator: validatePass2, trigger: 'blur' }
          ],
          age: [
            { validator: checkAge, trigger: 'blur' }
          ]
        }
      };
    },
    methods: {
      submitForm(formName) {
        this.$refs[formName].validate((valid) => {
          if (valid) {
            alert('submit!');
          } else {
            console.log('error submit!!');
            return false;
          }
        });
      },
      resetForm(formName) {
        this.$refs[formName].resetFields();
      }
    }
  }
</script>

<template>
  <div class="my-pagination">
    <el-pagination
      :current-page.sync="currentPageSync"
      :layout="layout"
      :total="total"
      :page-size="pageSize"
      @current-change="handleCurrentChange"
    >
      <el-dropdown placement="bottom" @command="handleSizeChange">
        <div>
          <span class="pagination-text left">每页</span>
          <el-button class="dropdowm-page__button">
            <span>{{ pageSize }}<i class="el-icon-arrow-down el-icon--right"></i></span>
          </el-button>
          <span class="pagination-text right">条</span>
        </div>
        <el-dropdown-menu slot="dropdown">
          <el-dropdown-item v-for="p in pageSizes" :key="p" :command="p">{{ p }}</el-dropdown-item>
        </el-dropdown-menu>
      </el-dropdown>
    </el-pagination>
  </div>
</template>

<script lang="ts">
/**
 * 自定义分页组件
 * 默认参数
 * layout: slot, prev, pager, next
 * total:  0
 * pageSize: 10
 * currentPage: 1
 * */

import { Component, Prop, PropSync, Emit, Vue } from 'vue-property-decorator';

@Component
export default class App extends Vue {
  @Prop({ default: 0 }) total!: number;

  @Prop({ default: 10 }) pageSize!: number;

  @Prop({ default: (layout: string) => `slot, ${layout || 'prev, pager, next'}` }) layout!: string;

  @Prop({ default: () => [10, 20, 50, 100, 200] }) pageSizes!: Array<number>;
  // PropSync，接收prop：currentPage，生成一个新的计算属性：currentPageSync，之后再同步给自身
  @PropSync('currentPage', { default: 1, type: Number }) currentPageSync!: number;

  // 下面两个空函数只是用于emit到父组件，触发对应的事件，不需要传递值
  @Emit('size-change')
  handleSizeChange(pageSize: number) {}

  @Emit('current-change')
  handleCurrentChange(currentPage: number) {}
}
</script>
<style lang="less" scoped>
.my-pagination ::v-deep .el-pagination {
  .pagination-text {
    width: 30px;
    height: 30px;
    font-size: 14px;
    color: #00ee14;
    letter-spacing: 0;
    line-height: 30px;
    font-weight: 400;
    &.right {
      text-align: left;
      padding-left: 8px;
    }
    &.left {
      text-align: right;
      padding-right: 8px;
    }
  }

  .dropdowm-page__button {
    width: 60px;
    height: 28px;
    position: relative;
    text-align: left;
    line-height: 24px;
    padding: 0 10px 0 12px;
    background: #fff;
    border: 1px solid grey;
    color: balck;
  }

  .el-icon-arrow-down.el-icon--right {
    position: absolute;
    right: 6px;
    top: 6px;
  }
}
</style>
        // 使用
        <am-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="current"
          :page-sizes="[10, 20, 50]"
          :page-size="pageSize"
          layout="slot, prev, pager, next"
          :total="total"
        ></am-pagination>