https://myrightfood.com/wp-content/plugins/total-recipe-generator/assets/js/trg_frontend.js

1/**
2 * trg_frontend.js
3 *
4 * @package Total_Recipe_Generator
5 * @version 2.3.3
6 */
7jQuery(function ($) {
8    'use strict';
9    $(window).on('load', function () {
10		var share_img = $('img.trg-img').attr('src'),
11		    recipe_summary = $('.recipe-summary').text();
12		// Modify OG tags dynamically
13		if(share_img) {
14			$("meta[property='og:image']").attr('content', share_img);
15		}
16		if(recipe_summary) {
17			$("meta[property='og:description']").attr('content', recipe_summary);
18		}
19        // Print button
20		$('#trg-print-btn').on('click', function (e) {
21            e.preventDefault();
22            var data = $('.trg-recipe').html();
23            trg_print_recipe(data);
24        });
25    });
26
27	function trg_print_recipe(data) {
28		var win = window.open('', 'Print', 'height=400,width=600'),
29		css_url = trg_localize.plugins_url + '/assets/css/trg_print.css';
30		win.document.write('<html><head><title></title>');
31		win.document.write('<link rel="stylesheet" href="' + css_url + '" type="text/css" media="all" />');

32		win.document.write('</head><body >');
33		win.document.write(data);
34		win.document.write('</body></html>');
35		win.document.close();
36		win.focus();
37		setTimeout(function(){win.print();},1000);
38		//win.close();
39		return true;
40	}    
41});