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+// 打印类属性、方法定义
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+/* eslint-disable */
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+const Print = function (dom, options) {
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+ if (!(this instanceof Print)) return new Print(dom, options);
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+
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+ this.options = this.extend({
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+ 'noPrint': '.no-print'
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+ }, options);
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+
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+ if ((typeof dom) === "string") {
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+ this.dom = document.querySelector(dom);
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+ } else {
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+ this.isDOM(dom)
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+ this.dom = this.isDOM(dom) ? dom : dom.$el;
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+ }
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+
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+ this.init();
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+};
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+Print.prototype = {
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+ init: function () {
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+ var content = this.getStyle() + this.getHtml();
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+ this.writeIframe(content);
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+ },
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+ extend: function (obj, obj2) {
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+ for (var k in obj2) {
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+ obj[k] = obj2[k];
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+ }
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+ return obj;
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+ },
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+
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+ getStyle: function () {
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+ var str = "",
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+ styles = document.querySelectorAll('style,link');
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+ for (var i = 0; i < styles.length; i++) {
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+ str += styles[i].outerHTML;
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+ }
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+ str += "<style>" + (this.options.noPrint ? this.options.noPrint : '.no-print') + "{display:none;}</style>";
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+
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+ return str;
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+ },
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+
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+ getHtml: function () {
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+ var inputs = document.querySelectorAll('input');
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+ var textareas = document.querySelectorAll('textarea');
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+ var selects = document.querySelectorAll('select');
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+
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+ for (var k = 0; k < inputs.length; k++) {
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+ if (inputs[k].type == "checkbox" || inputs[k].type == "radio") {
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+ if (inputs[k].checked == true) {
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+ inputs[k].setAttribute('checked', "checked")
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+ } else {
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+ inputs[k].removeAttribute('checked')
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+ }
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+ } else if (inputs[k].type == "text") {
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+ inputs[k].setAttribute('value', inputs[k].value)
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+ } else {
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+ inputs[k].setAttribute('value', inputs[k].value)
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+ }
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+ }
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+
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+ for (var k2 = 0; k2 < textareas.length; k2++) {
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+ if (textareas[k2].type == 'textarea') {
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+ textareas[k2].innerHTML = textareas[k2].value
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+ }
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+ }
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+
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+ for (var k3 = 0; k3 < selects.length; k3++) {
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+ if (selects[k3].type == 'select-one') {
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+ var child = selects[k3].children;
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+ for (var i in child) {
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+ if (child[i].tagName == 'OPTION') {
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+ if (child[i].selected == true) {
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+ child[i].setAttribute('selected', "selected")
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+ } else {
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+ child[i].removeAttribute('selected')
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+ }
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+ }
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+ }
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+ }
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+ }
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+ // 包裹要打印的元素
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+ // fix: https://github.com/xyl66/vuePlugs_printjs/issues/36
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+ let outerHTML = this.wrapperRefDom(this.dom).outerHTML
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+ return outerHTML;
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+ },
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+ // 向父级元素循环，包裹当前需要打印的元素
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+ // 防止根级别开头的 css 选择器不生效
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+ wrapperRefDom: function (refDom) {
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+ let prevDom = null
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+ let currDom = refDom
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+ // 判断当前元素是否在 body 中，不在文档中则直接返回该节点
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+ if (!this.isInBody(currDom)) return currDom
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+
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+ while (currDom) {
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+ if (prevDom) {
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+ let element = currDom.cloneNode(false)
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+ element.appendChild(prevDom)
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+ prevDom = element
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+ } else {
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+ prevDom = currDom.cloneNode(true)
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+ }
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+
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+ currDom = currDom.parentElement
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+ }
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+
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+ return prevDom
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+ },
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+
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+ writeIframe: function (content) {
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+ var w, doc, iframe = document.createElement('iframe'),
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+ f = document.body.appendChild(iframe);
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+ iframe.id = "myIframe";
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+ //iframe.style = "position:absolute;width:0;height:0;top:-10px;left:-10px;";
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+ iframe.setAttribute('style', 'position:absolute;width:0;height:0;top:-10px;left:-10px;');
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+ w = f.contentWindow || f.contentDocument;
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+ doc = f.contentDocument || f.contentWindow.document;
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+ doc.open();
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+ doc.write(content);
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+ doc.close();
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+ var _this = this
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+ iframe.onload = function(){
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+ _this.toPrint(w);
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+ setTimeout(function () {
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+ document.body.removeChild(iframe)
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+ }, 100)
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+ }
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+ },
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+
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+ toPrint: function (frameWindow) {
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+ try {
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+ setTimeout(function () {
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+ frameWindow.focus();
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+ try {
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+ if (!frameWindow.document.execCommand('print', false, null)) {
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+ frameWindow.print();
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+ }
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+ } catch (e) {
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+ frameWindow.print();
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+ }
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+ frameWindow.close();
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+ }, 10);
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+ } catch (err) {
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+ console.log('err', err);
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+ }
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+ },
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+ // 检查一个元素是否是 body 元素的后代元素且非 body 元素本身
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+ isInBody: function (node) {
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+ return (node === document.body) ? false : document.body.contains(node);
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+ },
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+ isDOM: (typeof HTMLElement === 'object') ?
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+ function (obj) {
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+ return obj instanceof HTMLElement;
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+ } :
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+ function (obj) {
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+ return obj && typeof obj === 'object' && obj.nodeType === 1 && typeof obj.nodeName === 'string';
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+ }
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+};
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+const MyPlugin = {}
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+MyPlugin.install = function (Vue, options) {
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+ // 4. 添加实例方法
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+ Vue.prototype.$print = Print
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+}
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+export default MyPlugin
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wengyuwen