https://www.referee.com/wp-content/plugins/convertkit/resources/frontend/js/convertkit.js?ver=3.0.8

1/**
2 * Frontend functionality for subscribers and tags.
3 *
4 * @since   1.9.6
5 *
6 * @author ConvertKit
7 */
8
9/**
10 * Gets the subscriber ID for the given email address, storing
11 * it in the `ck_subscriber_id` cookie if it exists.
12 *
13 * Typically called when the user completes a ConvertKit Form
14 * that has either "Auto-confirm new subscribers" or
15 * "Send subscriber to thank you page" enabled (both scenarios
16 * include a ck_subscriber_id).
17 *
18 * @since   1.9.6
19 *
20 * @param {string} emailAddress Email Address
21 */
22function convertStoreSubscriberEmailAsIDInCookie(emailAddress) {
23	if (convertkit.debug) {
24		console.log('convertStoreSubscriberEmailAsIDInCookie');
25		console.log(emailAddress);
26	}
27
28	fetch(convertkit.ajaxurl, {
29		method: 'POST',
30		headers: {
31			'Content-Type': 'application/x-www-form-urlencoded',
32		},
33		body: new URLSearchParams({
34			action: 'convertkit_store_subscriber_email_as_id_in_cookie',
35			convertkit_nonce: convertkit.nonce,
36			email: emailAddress,
37		}),
38	})
39		.then(function (response) {
40			if (convertkit.debug) {
41				console.log(response);
42			}
43
44			return response.json();
45		})
46		.then(function (result) {
47			if (convertkit.debug) {
48				console.log(result);
49			}
50
51			// Emit custom event with subscriber ID.
52			convertKitEmitCustomEvent('convertkit_user_subscribed', {
53				id: result.data.id,
54				email: emailAddress,
55			});
56		})
57		.catch(function (error) {
58			if (convertkit.debug) {
59				console.error(error);
60			}
61		});
62}
63
64/**
65 * Remove the url subscriber_id url param
66 *
67 * The 'ck_subscriber_id' should only be set on URLs included on
68 * links from a ConvertKit email with no other URL parameters.
69 * This function removes the parameters so a customer won't share
70 * a URL with their subscriber ID in it.
71 *
72 * @param {string} url URL.
73 */
74function convertKitRemoveSubscriberIDFromURL(url) {
75	// Parse URL.
76	const url_object = new URL(url);
77	const ck_subscriber_id = url_object.searchParams.get('ck_subscriber_id');
78
79	// If ck_subscriber_id is null, it's not included in the URL.
80	// Don't modify the URL.
81	if (ck_subscriber_id === null) {
82		return;
83	}
84
85	// Remove ck_subscriber_id from URL params.
86	url_object.searchParams.delete('ck_subscriber_id');
87
88	// Get title and string of parameters.
89	const title = document.getElementsByTagName('title')[0].innerHTML;
90	let params = url_object.searchParams.toString();
91
92	// Only add '?' if there are parameters.
93	if (params.length > 0) {
94		params = '?' + params;
95	}
96
97	// Update history.
98	window.history.replaceState(
99		null,
100		title,
101		url_object.pathname + params + url_object.hash
102	);
103
104	// Emit custom event with the removed subscriber ID.
105	convertKitEmitCustomEvent('kit_subscriber_id_removed_from_url', {
106		id: ck_subscriber_id,
107	});
108}
109
110/**
111 * Utility function to pause for the given number of milliseconds
112 *
113 * @since   1.9.6
114 * @param {number} milliseconds Number of milliseconds to pause for.
115 */
116function convertKitSleep(milliseconds) {
117	const start = new Date().getTime();
118	for (let i = 0; i < 1e7; i++) {
119		if (new Date().getTime() - start > milliseconds) {
120			break;
121		}
122	}
123}
124
125/**
126 * Emit a custom event with optional detail data.
127 *
128 * This function creates and dispatches a custom event with the specified
129 * event name and detail data.
130 *
131 * @since 2.5.0
132 *
133 * @param {string} eventName   The name of the custom event to emit.
134 * @param {Object} [detail={}] Optional detail data to include with the event.
135 */
136function convertKitEmitCustomEvent(eventName, detail) {
137	const event = new CustomEvent(eventName, { detail });
138	document.dispatchEvent(event);
139}
140
141/* eslint-disable no-unused-vars */
142/**
143 * Handles form submissions when reCAPTCHA is enabled.
144 *
145 * @param {string} token reCAPTCHA token.
146 */
147function convertKitRecaptchaFormSubmit(token) {
148	// Find submit button with the data-callback attribute.
149	const submitButton = document.querySelector(
150		'[type="submit"][data-callback="convertKitRecaptchaFormSubmit"]'
151	);
152
153	// Get the parent form of the submit button.
154	const form = submitButton.closest('form');
155
156	// Submit the form.
157	form.submit();
158}
159/* eslint-enable no-unused-vars */
160
161/**
162 * Register events
163 */
164document.addEventListener('DOMContentLoaded', function () {
165	// Removes `ck_subscriber_id` from the URI.
166	convertKitRemoveSubscriberIDFromURL(window.location.href);
167
168	// Store subscriber ID as a cookie from the email address used when a ConvertKit Form is submitted.
169	document.addEventListener('click', function (e) {
170		// Check if the form submit button was clicked, or the span element was clicked and its parent is the form submit button.
171		if (
172			!e.target.matches('.formkit-submit') &&
173			(!e.target.parentElement ||
174				!e.target.parentElement.matches('.formkit-submit'))
175		) {
176			if (convertkit.debug) {
177				console.log('not a ck form');
178			}
179
180			return;
181		}
182
183		// Get email address.
184		const emailAddress = document.querySelector(
185			'input[name="email_address"]'
186		).value;
187
188		// If the email address is empty, don't attempt to get the subscriber ID by email.
189		if (!emailAddress.length) {
190			if (convertkit.debug) {
191				console.log('email empty');
192			}
193
194			return;
195		}
196

197		// If the email address is invalid, don't attempt to get the subscriber ID by email.
198		const validator =
199			/^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
200		if (!validator.test(emailAddress.toLowerCase())) {
201			if (convertkit.debug) {
202				console.log('email not an email address');
203			}
204
205			return;
206		}
207
208		// Wait a moment before sending the AJAX request.
209		convertKitSleep(2000);
210		convertStoreSubscriberEmailAsIDInCookie(emailAddress);
211	});
212
213	// Set a cookie if any scripts with data-kit-limit-per-session attribute exist.
214	if (
215		document.querySelectorAll('script[data-kit-limit-per-session]').length >
216		0
217	) {
218		document.cookie = 'ck_non_inline_form_displayed=1; path=/';
219		if (convertkit.debug) {
220			console.log(
221				'Set `ck_non_inline_form_displayed` cookie for non-inline form limit'
222			);
223		}
224	}
225});