vue 打印
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print.js
// 打印类属性、方法定义
/* 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 += "<style>" + (this.options.noPrint ? this.options.noPrint : '.no-print') + "display:none;</style>";
return str;
,
getHtml: function ()
var inputs = document.querySelectorAll('input');
var textareas = document.querySelectorAll('textarea');
var selects = document.querySelectorAll('select');
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')
// 包裹要打印的元素
// fix: https://github.com/xyl66/vuePlugs_printjs/issues/36
let outerHTML = this.dom.outerHTML
return 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
// 判断当前元素是否在 body 中,不在文档中则直接返回该节点
if (!this.isInBody(currDom)) return currDom
while (currDom)
if (prevDom)
let element = currDom.cloneNode(false)
element.appendChild(prevDom)
prevDom = element
else
prevDom = currDom.cloneNode(true)
currDom = currDom.parentElement
return prevDom
,
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;";
iframe.setAttribute('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();
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);
,
// 检查一个元素是否是 body 元素的后代元素且非 body 元素本身
isInBody: function (node)
return (node === document.body) ? false : document.body.contains(node);
,
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
全局注册
import Print from "@/utils/print"
Vue.use(Print)
使用
<div ref="printContent"> 打印内容 </div>
<script>
doPrint()
this.$print(this.$refs.printContent)
</script>
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