@media print {
  // 解決單選框復選框打印時選中消失的問題
  ::v-deep .el-radio__input,
  ::v-deep .el-checkbox__input {
    -webkit-print-color-adjust: exact;
    -moz-print-color-adjust: exact;
    color-adjust: exact;
  }
}

 // 解決表格打印時表格顯示不全的問題
  ::v-deep table {
    table-layout: auto !important;
  }
  ::v-deep .el-table__header-wrapper .el-table__header {
    width: 99% !important;
  }
  ::v-deep .el-table__body-wrapper .el-table__body {
    width: 98% !important;
  }
  ::v-deep #print table {
    table-layout: fixed !important;
  }
  ::v-deep .el-table__fixed {
    display: none;
  }

 ::v-deep .el-table .el-table__cell.is-hidden > * {
    visibility: visible;
    font-size: 12px;
  }

  .noPrint {
    display: none;
  }
  @page {
    size: auto;
    // margin: 3mm; // 頁邊距
  }

  // form 表單打印樣式調(diào)整
  ::v-deep .el-form-item__label {
    padding: 0;
    width: 90px !important;
  }
  ::v-deep .el-form-item__content {
    margin-left: 90px !important;
  }
  ::v-deep .el-select__caret {
    opacity: 0;
  }
  ::v-deep .el-form-item__label {
    padding: 0;
    width: 90px !important;
  }
  // 清除input邊框
  ::v-deep .el-input__inner {
    max-width: 180px;
    padding: 0px;
    border: 0;
  }
  ::v-deep .el-table {
    .el-input__inner {
      display: none;
    }
  }
  // el-select 多選清除邊距，icon和背景
  ::v-deep .el-input__icon {
    display: none;
  }
  ::v-deep .el-tag {
    padding: 0;
    border-width: 0;
  }
  ::v-deep .el-tag__close {
    display: none;
  }

// 1. 全局掛載
import Print from 'vue-print-nb'
Vue.use(Print)
// or
// 2. 自定義指令
import print from 'vue-print-nb'
directives: {
  print
}

// 1. 全局掛載
import { createApp } from 'vue'
import App from './App.vue'
import print from 'vue3-print-nb'
const app = createApp(App)
app.use(print)
app.mount('#app')
// or 
// 2. 自定義指令
import print from 'vue3-print-nb'
directives: {
    print   
}

<template>
  <div class="hello">
    <h1>{{ msg }}</h1>
    <h2>Essential Links</h2>
    // 局部打印文本以及按鈕
    <div id="printArea">Print Area</div>
    <button v-print="print">Print!</button>
    <ul>
      <li>
        <a
           rel="external nofollow" 
          target="_blank"
        >
          Core Docs
        </a>
      </li>
      <li>
        <a
           rel="external nofollow" 
          target="_blank"
        >
          Forum
        </a>
      </li>
      <li>
        <a
           rel="external nofollow" 
          target="_blank"
        >
          Community Chat
        </a>
      </li>
      <li>
        <a
           rel="external nofollow" 
          target="_blank"
        >
          Twitter
        </a>
      </li>
      <br>
      <li>
        <a
           rel="external nofollow" 
          target="_blank"
        >
          Docs for This Template
        </a>
      </li>
    </ul>
    <h2>Ecosystem</h2>
    <ul>
      <li>
        <a
           rel="external nofollow" 
          target="_blank"
        >
          vue-router
        </a>
      </li>
      <li>
        <a
           rel="external nofollow" 
          target="_blank"
        >
          vuex
        </a>
      </li>
      <li>
        <a
           rel="external nofollow" 
          target="_blank"
        >
          vue-loader
        </a>
      </li>
      <li>
        <a
           rel="external nofollow" 
          target="_blank"
        >
          awesome-vue
        </a>
      </li>
    </ul>
  </div>
</template>

export default {
  name: 'HelloWorld',
  data () {
    let that = this
    return {
      msg: 'Welcome to Your Vue.js App',
      print: {
        id: 'printArea',
        popTitle: '配置頁眉標題', // 打印配置頁上方的標題
        extraHead: '打印', // 最上方的頭部文字，附加在head標簽上的額外標簽，使用逗號分割
        preview: true, // 是否啟動預(yù)覽模式，默認是false
        previewTitle: '預(yù)覽的標題', // 打印預(yù)覽的標題
        previewPrintBtnLabel: '預(yù)覽結(jié)束，開始打印', // 打印預(yù)覽的標題下方的按鈕文本，點擊可進入打印
        zIndex: 20002, // 預(yù)覽窗口的z-index，默認是20002，最好比默認值更高
        previewBeforeOpenCallback () { console.log('正在加載預(yù)覽窗口！'); console.log(that.msg, this) }, // 預(yù)覽窗口打開之前的callback
        previewOpenCallback () { console.log('已經(jīng)加載完預(yù)覽窗口，預(yù)覽打開了！') }, // 預(yù)覽窗口打開時的callback
        beforeOpenCallback () { console.log('開始打印之前！') }, // 開始打印之前的callback
        openCallback () { console.log('執(zhí)行打印了！') }, // 調(diào)用打印時的callback
        closeCallback () { console.log('關(guān)閉了打印工具！') }, // 關(guān)閉打印的callback(無法區(qū)分確認or取消)
        clickMounted () { console.log('點擊v-print綁定的按鈕了！') },
        // url: 'http://localhost:8080/', // 打印指定的URL，確保同源策略相同
        // asyncUrl (reslove) {
        //   setTimeout(() => {
        //     reslove('http://localhost:8080/')
        //   }, 2000)
        // },
        standard: '',
        extarCss: ''
      }
    }
  }
}

/*
***設(shè)置打印內(nèi)容樣式，不影響頁面原有樣式
***以下內(nèi)容為設(shè)置element table在打印時的樣式，防止打印不全*/
@page {
  size: auto;
  margin: 3mm;
}
@media print {
  html {
    background-color: #ffffff;
    height: auto;
    margin: 0px;
  }
  body {
    border: solid 1px #ffffff;
    /* margin: 10mm 15mm 10mm 15mm; */
  }
  #print table {
    table-layout: auto !important;
  }
  #print .el-table__header-wrapper .el-table__header {
    width: 100% !important;
    border: solid 1px #f2f2f2;
  }
  #print .el-table__body-wrapper .el-table__body {
    width: 100% !important;
    border: solid 1px #f2f2f2;
  }
  #print #pagetable table {
    table-layout: fixed !important;
  }
  #print .el-table__empty-block {
    width: 100% !important;
    height: auto !important;
  }
  #print .el-input-number--small{
    width: 100% !important;
  }
}