https://www.thacherwinery.com/js/jquery.legit-1.3.2.js

1(function($) {
2
3	var rules = {
4		required: { 
5			selector: '.required', 	
6			rule: function($el) { 
7				return ($el.attr('type') != 'checkbox' && $el.val().length > 0) || $el.attr('checked'); 
8			} 
9		},
10		notdefault: {
11			selector: '.notdefault',
12			rule: function($el) {
13				return $el.val() != $el[0].defaultValue;
14			}
15		},
16		email: { selector: '.email', rule: /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i },
17		date: { selector: '.date', rule: /^[0-3]?[0-9]\/[0123]?[0-9]\/[12][09][0-9][0-9]$/ },
18		numeric: { selector: '.numeric', rule: /^[\d]*(\.[\d]{1,})?$/ },
19		url: { selector: '.url', rule: /(http|ftp|https):\/\/[\w\-_]+(\.[\w\-_]+)+([\w\-\.,@?^=%&:/~\+#]*[\w\-\@?^=%&/~\+#])?/ }
20	};
21
22
23	var methods = {
24		init: function(options) {
25
26			var settings = {
27				'refocus':			true,
28				'invalidClass': 	'alert',
29				'invalidSelector': 	'label[for=<<id>>]',
30				'invalidCallback': 	null,
31				'validCallback': 	null,
32				'smother': 			false
33			};
34
35			if(options) {
36				$.extend(settings, options);
37			}
38
39			return this.each(function() {
40				
41				var $this = $(this);
42
43				$this.bind('submit.legit', function(e) {
44
45					if(settings.smother) {
46						e.preventDefault();
47					}
48					
49					var feedback = '', focus = false, tmpSelector;
50
51					$this.find('input[type="password"]:enabled, input[type="file"]:enabled, input[type="text"]:enabled, input[type="checkbox"]:enabled, select:enabled, textarea:enabled').each(function() {
52						
53						var $el = $(this), valid = true;
54
55						for(var i in rules) {
56
57							if($el.is(rules[i].selector)) {
58								
59								if(i != 'required' && $el.val().length == 0) {
60									//the field is empty and only the required rule tests empty fields
61									continue;
62								}
63
64								if(typeof rules[i].rule.test == 'function') {
65									if(!rules[i].rule.test($el.val())) {
66										valid = false;
67									}
68								}
69								else if(typeof rules[i].rule == 'function' && !rules[i].rule($el)) {
70									valid = false;
71								}
72
73							}
74
75						}
76
77						tmpSelector = false;
78						if(settings.invalidSelector) {
79
80							tmpSelector = settings.invalidSelector;
81
82							if($el.attr('id') && $el.attr('id').length > 0) {
83								tmpSelector = tmpSelector.replace(/<<id>>/g, $el.attr('id'));
84							}   
85
86							if($el.attr('name') && $el.attr('name').length > 0) {
87								tmpSelector = tmpSelector.replace(/<<name>>/g, $el.attr('name'))
88							}   
89						}
90
91						if(!valid) {
92							
93							if(settings.invalidClass) {
94								if(tmpSelector) {
95									$(tmpSelector).addClass(settings.invalidClass);
96								}
97								else {
98									$el.addClass(settings.invalidClass);
99								}
100							}
101
102							feedback += $el.attr('title') + "\n";
103							if(!focus) focus = $el;
104						}
105						else {
106							
107							if(settings.invalidClass) {
108								if(tmpSelector) {
109									$(tmpSelector).removeClass(settings.invalidClass);
110								}
111								else {
112									$el.removeClass(settings.invalidClass);
113								}
114							}
115						}
116
117					});
118
119					if(feedback.length > 0) {
120
121						if(settings.refocus) focus.focus();
122
123						if(typeof settings.invalidCallback == 'function') {
124							return settings.invalidCallback(feedback);
125						}
126						else {
127							alert(feedback);
128							return false;
129						}
130					}
131
132					if(typeof settings.validCallback == 'function') {
133						return settings.validCallback(feedback);
134					}
135					else {
136						return true;
137					}
138				});
139			});
140		}, //init
141		
142		destroy: function() {
143
144			this.unbind('.legit');
145
146			return this;
147		}, //destroy
148
149		addRule: function(name, rule) {
150
151			rules[name] = rule;
152
153			return this;
154		}
155	};
156
157	$.fn.legit = function(method) {
158		if(methods[method]) {
159			return methods[method].apply(this, Array.prototype.slice.call(arguments, 1));
160		}
161		else if(typeof method === 'object' || !method) {
162			return methods.init.apply(this, arguments);
163		}
164		else {
165			$.error('Method ' + method + ' does not exist on jQuery.legit');
166		}
167	}
168
169})(jQuery);