https://proyouthing.de/modules/newsletter/sformverify.js?v=5.6.3

1function SMValidateControls(){
2var arrDeclarations = arguments[0], valid = true;
3	for(var i=0; i<arrDeclarations.length; i++){
4		valid = arrDeclarations[i].isValid();
5		if(!valid){
6			return(false);
7			};
8		};
9	return(true);
10	};
11
12function SMFormDataDeclaration(){
13var $args = arguments, $t = this;
14	if($args.length>0){
15		$t.init.apply($t, $args);
16		};
17	};
18
19SMFormDataDeclaration.prototype.init = function(){
20var $args = arguments, $t = this, $m = "";
21	$t.name = $args[0];
22	$t.form = $args[1];
23	$t.required = $args[2];
24	$t.type = $args[3];
25	$t.fixedValueOperator = $args[4];
26	$t.fixedValue = $args[5];
27	$t.validFrom = $args[6];
28	$t.validTo = $args[7];
29	$t.regularExpression = $args[8];
30	$t.callExternalJS = $args[9];
31	$t.errorMessages = new Array();
32	// error messages
33	for(var i=10; i<$args.length; i++){
34		$m = SX_uEsc($args[i]);
35		$t.errorMessages[i-10] = $m.replace(/\\n/g, "\n");
36		};
37	};
38
39SMFormDataDeclaration.prototype.isValid = function(){
40var $t = this, $form = document.forms[$t.form], $elem = null, $valid = true,
41		$oneSel = false, $val = null, $pat = null, $fV = null,
42		$em = $t.errorMessages;
43	if($form==null){
44		return(false);
45		}
46	else $elem = $form.elements[$t.name];
47	if($elem==null){
48		return(false);
49		};
50	// required:
51	if($t.required){
52		switch($elem.type){
53			case "checkbox":
54				$valid = $elem.checked; break;
55			case "select-one":
56			case "select-multiple":
57				for(var i=0; i<$elem.options.length; i++){
58					if($elem.options[i].selected&&$elem.options[i].value!=""){
59						$oneSel = true;
60						break;
61						};
62					};
63				$valid = $oneSel; break;
64			default:
65				$valid = ($elem.value!=""); break;
66			};
67		if(!$valid){
68			if($em[0]) alert($em[0]);
69			$elem.focus();
70			return(false);
71			};
72		};
73	if($elem.type!="radio" &&
74			$elem.type!="checkbox" &&
75			$elem.type!="select-single" &&
76			$elem.type!="select-multiple"){
77		// type
78		if($t.type!=0){
79			switch($t.type){
80				case 1:
81					// text
82					$pat = new RegExp("^[a-z]*$", "gi"); break;
83				case 2:
84					// numeric
85					$pat = new RegExp("^\\d*$", "gi"); break;
86				case 3:
87					// email
88					$pat = new RegExp("^[\\w][\\w\\.\\-]+@[\\w\\.\\-]+\\.[a-z]+$", "gi"); break;
89				};
90			$valid = $pat.test($elem.value);
91			if(!$valid){
92				if($em[1]) alert($em[1]);
93				$elem.focus();
94				return(false);
95				};
96			};
97		// fixed value
98		if($t.fixedValueOperator!=""){
99			$val = $elem.value;
100			$fV = $t.fixedValue;
101			if($fV.indexOf("eval-js:")==0) $fV = eval($fV.substring(8));
102			switch($t.fixedValueOperator){
103				case "eq":
104					// equal
105					$valid = ($val==$fV); break;
106				case "neq":
107					// not equal
108					$valid = ($val!=$fV); break;
109				case "gt":
110					// greater than
111					$valid = (parseFloat($val) > parseFloat($fV)); break;
112				case "gte":
113					// greater or equal
114					$valid = (parseFloat($val) >= parseFloat($fV)); break;
115				case "lt":
116					// less than
117					$valid = (parseFloat($val) < parseFloat($fV)); break;
118				case "lte":
119					// less than or equal
120					$valid = (parseFloat($val) <= parseFloat($fV)); break;
121				};
122			if(!$valid){
123				if($em[2]) alert($em[2]);
124				$elem.focus();
125				return(false);
126				};
127			};
128		// valid from / to
129		if($t.type!=3&&($t.validFrom!="0"||$t.validTo!="0")&&($t.validFrom!=""||$t.validTo!="")){
130			$val = $elem.value;
131			if($t.type!=2) $val = $val.length;
132			if($t.validFrom!="0") $valid = ($val >= parseFloat($t.validFrom));
133			if($t.validTo!="0") $valid = $valid && ($val <= parseFloat($t.validTo));
134			if(!$valid){
135				if($em[3]) alert($em[3]);
136				$elem.focus();
137				return(false);
138				};
139			};
140		// regular expression
141		if($t.regularExpression!=""){
142			$pat = new RegExp($t.regularExpression, "gi");
143			// $elem.blur();
144			$val = $elem.value;
145			$valid = $pat.test($val);
146			if(!$valid){
147				if($em[4]) alert($em[4]);
148				$elem.focus();
149				return(false);
150				};
151			};
152		};
153	// external JS function
154	if($t.callExternalJS!=""){
155		if(window[$t.callExternalJS]!=null){
156			$val = $elem.value;
157			// extended for 5.5.7, added elem and form
158			$valid = window[$t.callExternalJS]($val, $elem, $form);
159			if(!$valid){
160				if($em[5]) alert($em[5]);
161				$elem.focus();
162				return(false);
163				};
164			};
165		};
166	return(true);
167	};