https://www.polskapilka.net/system/theme/js/form.js

1/**
2 * jQuery-Plugin "clearField"
3 * 
4 * @version: 1.0, 31.07.2009
5 * 
6 * @author: Stijn Van Minnebruggen
7 *          [email protected]
8 *          https://www.donotfold.be
9 * 
10 * @example: $('selector').clearField();
11 * @example: $('selector').clearField({ blurClass: 'myBlurredClass', activeClass: 'myActiveClass' });
12 * 
13 */
14
15(function($) {
16
17jQuery.fn.clearField = function(settings) {
18	
19	/**
20	 * Settings
21	 * 
22	 */
23	
24	settings = jQuery.extend({
25		blurClass: 'clearFieldBlurred',
26		activeClass: 'clearFieldActive'
27	}, settings);
28	
29	
30	/**
31	 * loop each element
32	 * 
33	 */
34	
35	jQuery(this).each(function() {
36		
37		/**
38		 * Set element
39		 * 
40		 */
41		
42		var el = jQuery(this);
43		
44		
45		/**
46		 * Add rel attribute
47		 * 
48		 */
49		
50		if(el.attr('rel') == undefined) {
51			el.attr('rel', el.val()).addClass(settings.blurClass);
52		}
53		
54		
55		/**
56		 * Set focus action
57		 * 
58		 */
59		
60		el.focus(function() {
61			
62			if(el.val() == el.attr('rel')) {
63				el.val('').removeClass(settings.blurClass).addClass(settings.activeClass);
64			}
65			
66		});
67		
68		
69		/**
70		 * Set blur action
71		 * 
72		 */
73		
74		el.blur(function() {
75			
76			if(el.val() == '') {
77				el.val(el.attr('rel')).removeClass(settings.activeClass).addClass(settings.blurClass);
78			}
79			
80		});
81		
82		
83	});
84	
85	return jQuery;
86	
87};
88
89})(jQuery);