https://www.sfstation.com/wp-content/plugins/recaptcha-in-wp-comments-form/js/base.js?ver=9.1.2

1/*
2 * Plugin:      reCAPTCHA in WP comments form
3 * Path:        /js
4 * File:        base.js
5 * Since:       9.1.0
6 * Version:     9.1.0
7 */
8
9//
10// Common javascript Tools
11//
12class griwpc_tools {
13	*iteratingOver ( c ) { // c: an objects collection
14		let ks = Object.getOwnPropertyNames( c );
15		while (ks.length) {
16			let k = ks.shift();
17			yield [k, c[k]];
18		}
19	}
20
21	// Old themes forced output mode
22	GetElementById( n, id ) {
23		var r = null;
24		if ( n.getAttribute('id') == id ) return n;
25		for ( var i = 0; i < n.childNodes.length; i++ ) {
26			if ( n.childNodes[i].nodeType == 1 ) {
27				r = this.GetElementById( n.childNodes[i], id );
28				if ( r != null ) break;
29			}
30		}
31		return r;
32	}
33
34	getForm () {
35
36		let ele = undefined, previous;
37
38		switch ( parseInt( griwpco.standardQueries) ) {
39			case 0:
40			case 2:
41				ele = document.getElementById ( griwpco.formID )
42				break;
43			case 1:
44			case 3:
45				previous = document.querySelectorAll ( griwpco.formQuery );
46				if ( previous.length )
47					ele = previous[ griwpco.formQueryElem ];
48				break;
49		}
50
51		return (( ele !== undefined ) ? ele : undefined);
52
53	}
54
55	getButton ( form ) {
56
57		let ele = undefined, previous;
58
59		switch ( parseInt( griwpco.standardQueries) ) {
60			case 0:
61			case 1:
62				ele = this.GetElementById (form, griwpco.buttonID );
63				break;
64			case 2:
65			case 3:
66				previous = document.querySelectorAll ( griwpco.buttonQuery );
67				if ( previous.length )
68					ele = previous[ griwpco.buttonQueryElem ];
69				break;
70		}
71
72		return (( ele !== undefined ) ? ele : undefined);
73
74	}
75
76}
77const GriwpcTools = new griwpc_tools();
78
79//
80// javaScript pseudo jQuery.Ajax interface
81//
82class griwpc_ajax_interface {
83
84	constructor() { 
85    	this.versions = [ "MSXML2.XmlHttp.6.0", "MSXML2.XmlHttp.5.0", "MSXML2.XmlHttp.4.0", "MSXML2.XmlHttp.3.0", "MSXML2.XmlHttp.2.0", "Microsoft.XmlHttp" ];
86	}
87
88	init () {
89
90	    if (typeof XMLHttpRequest !== 'undefined')
91	        return new XMLHttpRequest();
92
93	    let xhr;
94
95	    for (var i = 0; i < this.versions.length; i++) {
96	        try {
97	            xhr = new ActiveXObject(versions[i]);
98	            break;
99	        } catch (e) {
100	        }
101	    }
102	    return xhr;
103
104	}
105
106	send (url, callback, method, data, async = true) {
107	    let x = this.init();
108
109    	if ( async === undefined ) 
110        	async = true;
111
112	    x.open(method, url, async);
113	    x.onreadystatechange = function () {
114	        if ((x.readyState === 4) && (typeof callback === 'function')) {
115	        	// we send the whole response so, inside this callback function, you're allow to perform all .error, .success, .always, .done, etc... routines
116	            callback( x ) 
117	        }
118	    };
119
120	    if ( ( method === 'POST' ) || ( method === 'post' ) ) {
121	        x.setRequestHeader( 'Content-type', 'application/x-www-form-urlencoded' );
122	    }
123	    x.send( data )
124	}
125
126	get ( url, data, callback, async) {
127	    let query = [];
128	    for (var key in data) {
129	        query.push(encodeURIComponent(key) + '=' + encodeURIComponent(data[key]));
130	    }
131	    this.send( url + (query.length ? '?' + query.join('&') : ''), callback, 'GET', null, async)
132	}
133
134	post (url, data, callback, async ) {
135	    var query = [];
136	    for ( var key in data ) {
137	        query.push( encodeURIComponent(key) + '=' + encodeURIComponent( data[key] ) );
138	    }
139	    this.send( url, callback, 'POST', query.join('&'), async)
140	}
141
142}
143const GriwpcAjax = new griwpc_ajax_interface();