https://www.100daysofrealfood.com/wp-content/plugins/convertkit/resources/frontend/js/convertkit.js?ver=2.8.2

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

191				// If the email address is invalid, don't attempt to get the subscriber ID by email.
192				var validator = /^(([^<>()\[\]\\.,;:\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,}))$/;
193				if ( ! validator.test( emailAddress.toLowerCase() ) ) {
194					if ( convertkit.debug ) {
195						console.log( 'email not an email address' );
196					}
197
198					return;
199				}
200
201				// Wait a moment before sending the AJAX request.
202				convertKitSleep( 2000 );
203				convertStoreSubscriberEmailAsIDInCookie( emailAddress );
204			}
205		);
206
207	}
208);