This is the 8th day of my participation in the August Text Challenge.More challenges in August

A, vue – print – nb

This plug-in is nice and simple, but the problem is that it is not compatible with XP32 bits. Official Installation and Usage documents 1. Installation

npm install vue-print-nb --save
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2. Global import in main.js

import Print from 'vue-print-nb'
Vue.use(Print); 
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3. Use the id

<div id="printMe" >
    <p>Print the content</p>
</div>
<button v-print="'#printMer'">print</button>
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Second, the vuePlugs_printjs

1. Download print.js and place it in the plugins folder

| | -- - | -- - the root directory SRC | -- - | -- - | - plugins | -- - | -- - | -- - | -- print. JsCopy the code

2. Global import in main.js

import Print from '@/plugs/print'
Vue.use(Print) / / register
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3. Use it on the page

<template>
  <div ref="print">
      <p>Print the content</p>
      <p class="no-print">Non-print method 1: Add the no-print style class</p>
      <p class="className">Non-print method 2: Customize the class name</p>
  </div>
  <button @click="print()">print</button>
</template>
print(){
    this.$print(this.$refs.print,{'no-print':'.className'});
}
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4. The contents of print.js

// Prints class attributes, method definitions
/* eslint-disable */
const Print =function(dom, options) {
    if(! (this instanceof Print)) return new Print(dom, options);
  
    this.options = this.extend({
      'noPrint': '.no-print'
    }, options);
  
    if ((typeof dom) === "string") {
      this.dom = document.querySelector(dom);
    } else {
      this.dom = dom;
    }
  
    this.init();
  };
  Print.prototype = {
    init: function () {
      var content = this.getStyle() + this.getHtml();
      this.writeIframe(content);
    },
    extend: function (obj, obj2) {
      for (var k in obj2) {
        obj[k] = obj2[k];
      }
      return obj;
    },
  
    getStyle: function () {
      var str = "",
        styles = document.querySelectorAll('style,link');
      for (var i = 0; i < styles.length; i++) {
        str += styles[i].outerHTML;
      }
      str += "<style>" + (this.options.noPrint ? this.options.noPrint : '.no-print') + "{display:none; }";
  
      return str;
    },
  
    getHtml: function () {
      var inputs = document.querySelectorAll('input');
      var textareas = document.querySelectorAll('textarea');
      var selects = document.querySelectorAll('select');
  
      for (var k in inputs) {
        if (inputs[k].type == "checkbox" || inputs[k].type == "radio") {
          if (inputs[k].checked == true) {
            inputs[k].setAttribute('checked'."checked")}else {
            inputs[k].removeAttribute('checked')}}else if (inputs[k].type == "text") {
          inputs[k].setAttribute('value', inputs[k].value)
        }
      }
  
      for (var k2 in textareas) {
        if (textareas[k2].type == 'textarea') {
          textareas[k2].innerHTML = textareas[k2].value
        }
      }
  
      for (var k3 in selects) {
        if (selects[k3].type == 'select-one') {
          var child = selects[k3].children;
          for (var i in child) {
            if (child[i].tagName == 'OPTION') {
              if (child[i].selected == true) {
                child[i].setAttribute('selected'."selected")}else {
                child[i].removeAttribute('selected')}}}}}return this.dom.outerHTML;
    },
  
    writeIframe: function (content) {
      var w, doc, iframe = document.createElement('iframe'),
        f = document.body.appendChild(iframe);
      iframe.id = "myIframe";
      iframe.style = "position:absolute; width:0; height:0; top:-10px; left:-10px;";
  
      w = f.contentWindow || f.contentDocument;
      doc = f.contentDocument || f.contentWindow.document;
      doc.open();
      doc.write(content);
      doc.close();
      this.toPrint(w);
  
      setTimeout(function () {
        document.body.removeChild(iframe)
      }, 100)},toPrint: function (frameWindow) {
      try {
        setTimeout(function () {
          frameWindow.focus();
          try {
            if(! frameWindow.document.execCommand('print'.false.null)) { frameWindow.print(); }}catch (e) {
            frameWindow.print();
          }
          frameWindow.close();
        }, 10);
      } catch (err) {
        console.log('err', err); }}};const MyPlugin = {}
  MyPlugin.install = function (Vue, options) {
    // 4. Add instance methods
    Vue.prototype.$print = Print
  }
  export default MyPlugin
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Disadvantages: This approach is fine in development environments, but can cause style loss problems in production environments. After being packaged by Webpack, whether the printing function is available requires a follow-up test. Here is the Jenkins automatic packaging. After testing, it is not available in production environment, but there is no problem of style loss in XP32-bit system. So this is a combination of two plug-ins. Encapsulated components:

<template>
  <div class="print-content">
    <el-button v-if="isversion! ='windowsXp'" type="primary" icon="el-icon-printer" v-print="'#taskForm'">print</el-button>
    <el-button v-else type="primary" icon="el-icon-printer" @click="handlePrint">print</el-button>
  </div>
</template>
<script>
export default {
  name: "commonPrint".data(){
    return{
      isversion:' '}},mounted(){
     var version = navigator.userAgent;
    if (version.indexOf("Windows NT 5.0." ") != -1) {
        this.isversion="windows2000";
    } else if (version.indexOf("Windows NT 5.1." ") != -1) {
        this.isversion="windowsXp"
    } else if (version.indexOf("Windows NT 5.2." ") != -1) {
        this.isversion="windows2003"
    } else if (version.indexOf("Windows NT 6.0." ") != -1) {
        this.isversion="windowsVista"
    } else if (version.indexOf("Windows NT 6.1." ") != -1) {
        this.isversion="windows7"
    } else if (version.indexOf("Windows NT 6.2." ") != -1) {
        this.isversion="windows8"
    } else if (version.indexOf("Windows NT 10.0." ") != -1) {
        this.isversion="windows10"}},methods: {
    // Print
    handlePrint() {
      this.$print(this.$parent.$refs.taskForms); / / use}}};</script>
<style lang="scss" scoped>
.print-content {
  display: initial;
  margin: 0 8px;
}
</style>
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Some XP32-bit systems have a bug that pops up twice, with the first blank page and the second normal.