/* 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.isDOM(dom)
this.dom = this.isDOM(dom) ? dom : dom.$el;
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 += "";
// 去除height：100%样式，解决分页下，样式混乱问题
str += "";
return str;
getHtml: function () {
var inputs = document.querySelectorAll('input');
var textareas = document.querySelectorAll('textarea');
var selects = document.querySelectorAll('select');
var canvass = document.querySelectorAll('canvas');
for (var k = 0; k < inputs.length; k++) {
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)
} else {
inputs[k].setAttribute('value', inputs[k].value)
for (var k2 = 0; k2 < textareas.length; k2++) {
if (textareas[k2].type == 'textarea') {
textareas[k2].innerHTML = textareas[k2].value
for (var k3 = 0; k3 < selects.length; k3++) {
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')
//canvass echars图表转为图片
for (var k4 = 0; k4 < canvass.length; k4++) {
var imageURL = canvass[k4].toDataURL("image/png");
var img = document.createElement("img");
img.src = imageURL;
img.setAttribute('style', 'max-width: 100%;');
img.className = 'isNeedRemove'
// canvass[k4].style.display = 'none'
// canvass[k4].parentNode.style.width = '100%'
// canvass[k4].parentNode.style.textAlign = 'center'
canvass[k4].parentNode.insertBefore(img,canvass[k4].nextElementSibling);
// 包裹要打印的元素
// fix: https://github.com/xyl66/vuePlugs_printjs/issues/36
// return this.wrapperRefDom(this.dom).outerHTML;
return this.dom.outerHTML;
// 向父级元素循环，包裹当前需要打印的元素
// 防止根级别开头的 css 选择器不生效
wrapperRefDom: function (refDom) {
let prevDom = null
let currDom = refDom
while (currDom && currDom.tagName.toLowerCase() !== 'body') {
if (prevDom) {
let element = currDom.cloneNode(false)
element.appendChild(prevDom)
prevDom = element
} else {
prevDom = currDom.cloneNode(true)
currDom = currDom.parentElement
return currDom.tagName.toLowerCase() === 'body' ? currDom : prevDom
writeIframe: function (content) {
var w, doc, iframe = document.createElement('iframe'),
f = document.body.appendChild(iframe);
iframe.id = "myIframe";
//iframe.style = "width:0;height:0;top:-10px;left:-10px;";
iframe.setAttribute('style', '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();
var _this = this
iframe.onload = function(){
_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);
isDOM: (typeof HTMLElement === 'object') ?
function (obj) {
return obj instanceof HTMLElement;
function (obj) {
return obj && typeof obj === 'object' && obj.nodeType === 1 && typeof obj.nodeName === 'string';
const MyPlugin = {}
MyPlugin.install = function (Vue, options) {
// 4. 添加实例方法
Vue.prototype.$print = Print
export default MyPlugin
2.将print.js放在src/plugins/print
//在main.js引入
import Print from '@/plugins/print2'
Vue.use(Print)
3.页面里头书写
//加ref读取标签，no-print则不参与打印，打印调用如下：
this.$print(this.$refs.print)
//因为每次打印都会多一个img（将echarts的canvas转为img），我的print.js里头已经配置给这个img里头加的classname为isNeedRemove，所以每次打印完需去除，我只有一张echarts、去除的数量根据业务需求定。
this.$nextTick(()=>{
let arr=document.getElementsByClassName('isNeedRemove')
if(arr.length) arr[0].remove();
/* 去除页眉页脚 */
@page {
size: auto A4 landscape;
margin:20px auto;
@media print {
// 这里写自己需要的样式
5.背景色缺失解决
在body里头添加该样式
-webkit-print-color-adjust: exact;
参考文献：
1.打印不出背景色==》解决：
https://blog.csdn.net/weixin_30480583/article/details/98594685
2.自动分页：
https://www.jianshu.com/p/cf606ebcf095
3.打印不出来echarts==》解决
https://blog.csdn.net/shishuwei111/article/details/94167974
4.样式出不来解决
https://www.jianshu.com/p/35b8e9e08a95
