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- const Print = function (dom, options) {
- if (!(this instanceof Print)) return new Print(dom, options);
- this.options = this.extend(
- {
- noPrint: '.no-print',
- type: 'window',
- },
- options,
- );
- if (typeof dom === 'string') {
- this.dom = document.querySelector(dom);
- } else {
- this.dom = dom;
- }
- this.init();
- };
- Print.prototype = {
- init() {
- const content = this.getStyle() + this.getHtml();
- if (this.options.type === 'iframe') {
- this.writeIframe(content);
- } else {
- this.writeDocument(content);
- }
- },
- extend(obj, obj2) {
- for (const k in obj2) {
- obj[k] = obj2[k];
- }
- return obj;
- },
- getStyle() {
- let str = '';
- const styles = document.querySelectorAll('style,link');
- for (let 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() {
- const inputs = document.querySelectorAll('input');
- const textareas = document.querySelectorAll('textarea');
- const selects = document.querySelectorAll('select');
- for (const 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 (const k2 in textareas) {
- if (textareas[k2].type === 'textarea') {
- textareas[k2].innerHTML = textareas[k2].value;
- }
- }
- for (const k3 in selects) {
- if (selects[k3].type === 'select-one') {
- const child = selects[k3].children;
- for (const 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(content) {
- const iframe = document.createElement('iframe');
- const f = document.body.appendChild(iframe);
- const w = f.contentWindow || f.contentDocument;
- const doc = f.contentDocument || f.contentWindow.document;
- iframe.id = 'myIframe';
- iframe.style = 'position:absolute;width:0;height:0;top:-10px;left:-10px;';
- doc.open();
- doc.write(content);
- doc.close();
- alert('这是一个浏览器提示窗口!');
- // this.toPrint(w);
- document.body.removeChild(iframe);
- },
- writeDocument(content) {
- const newWindow = window.open('_blank');
- newWindow.document.write(content);
- newWindow.document.close();
- // this.toPrint(newWindow);
- // setTimeout(() => {
- // newWindow.close();
- // }, 100);
- },
- toPrint(frameWindow) {
- try {
- setTimeout(() => {
- frameWindow.focus();
- try {
- if (!frameWindow.document.execCommand('print', false, null)) {
- frameWindow.print();
- }
- } catch (e) {
- frameWindow.print();
- }
- frameWindow.close();
- }, 100);
- } catch (err) {
- console.log(err);
- }
- },
- };
- module.exports = Print;
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