2 * HTML5 placeholder emulation for jQuery plugin
4 * This will automatically use the HTML5 placeholder attribute if supported, or emulate this behavior if not.
6 * This is a fork from Mathias Bynens' jquery.placeholder as of this commit
7 * https://github.com/mathiasbynens/jquery-placeholder/blob/47f05d400e2dd16b59d144141a2cf54a9a77c502/jquery.placeholder.js
9 * @author Mathias Bynens <http://mathiasbynens.be/>
10 * @author Trevor Parscal <tparscal@wikimedia.org>, 2012
11 * @author Krinkle <krinklemail@gmail.com>, 2012
12 * @author Alex Ivanov <alexivanov97@gmail.com>, 2013
18 var isInputSupported
= 'placeholder' in document
.createElement('input'),
19 isTextareaSupported
= 'placeholder' in document
.createElement('textarea'),
21 valHooks
= $.valHooks
,
22 propHooks
= $.propHooks
,
26 function safeActiveElement() {
27 // Avoid IE9 `document.activeElement` of death
28 // https://github.com/mathiasbynens/jquery-placeholder/pull/99
30 return document
.activeElement
;
35 // Return an object of element attributes
37 rinlinejQuery
= /^jQuery\d+$/;
38 $.each(elem
.attributes
, function (i
, attr
) {
39 if (attr
.specified
&& !rinlinejQuery
.test(attr
.name
)) {
40 newAttrs
[attr
.name
] = attr
.value
;
46 function clearPlaceholder(event
, value
) {
49 if (input
.value
=== $input
.attr('placeholder') && $input
.hasClass('placeholder')) {
50 if ($input
.data('placeholder-password')) {
51 $input
= $input
.hide().next().show().attr('id', $input
.removeAttr('id').data('placeholder-id'));
52 // If `clearPlaceholder` was called from `$.valHooks.input.set`
54 $input
[0].value
= value
;
60 $input
.removeClass('placeholder');
61 if (input
=== safeActiveElement()) {
68 function setPlaceholder() {
74 if (input
.type
=== 'password') {
75 if (!$input
.data('placeholder-textinput')) {
77 $replacement
= $input
.clone().attr({ 'type': 'text' });
79 $replacement
= $('<input>').attr($.extend(args(this), { 'type': 'text' }));
84 'placeholder-password': $input
,
87 .bind('focus.placeholder drop.placeholder', clearPlaceholder
);
90 'placeholder-textinput': $replacement
,
93 .before($replacement
);
95 $input
= $input
.removeAttr('id').hide().prev().attr('id', id
).show();
96 // Note: `$input[0] != input` now!
98 $input
.addClass('placeholder');
99 $input
[0].value
= $input
.attr('placeholder');
101 $input
.removeClass('placeholder');
105 function changePlaceholder(text
) {
106 var hasArgs
= arguments
.length
,
109 if ($input
.attr('placeholder') !== text
) {
110 $input
.prop('placeholder', text
);
111 if ($input
.hasClass('placeholder')) {
112 $input
[0].value
= text
;
118 if (isInputSupported
&& isTextareaSupported
) {
120 placeholder
= prototype.placeholder = function (text
) {
121 var hasArgs
= arguments
.length
;
124 changePlaceholder
.call(this, text
);
130 placeholder
.input
= placeholder
.textarea
= true;
134 placeholder
= prototype.placeholder = function (text
) {
136 hasArgs
= arguments
.length
;
139 changePlaceholder
.call(this, text
);
143 .filter((isInputSupported
? 'textarea' : ':input') + '[placeholder]')
144 .filter( function () {
145 return !$(this).data('placeholder-enabled');
148 'focus.placeholder drop.placeholder': clearPlaceholder
,
149 'blur.placeholder': setPlaceholder
151 .data('placeholder-enabled', true)
152 .trigger('blur.placeholder');
156 placeholder
.input
= isInputSupported
;
157 placeholder
.textarea
= isTextareaSupported
;
160 'get': function (element
) {
161 var $element
= $(element
),
162 $passwordInput
= $element
.data('placeholder-password');
163 if ($passwordInput
) {
164 return $passwordInput
[0].value
;
167 return $element
.data('placeholder-enabled') && $element
.hasClass('placeholder') ? '' : element
.value
;
169 'set': function (element
, value
) {
170 var $element
= $(element
),
171 $passwordInput
= $element
.data('placeholder-password');
172 if ($passwordInput
) {
173 $passwordInput
[0].value
= value
;
177 if (!$element
.data('placeholder-enabled')) {
178 element
.value
= value
;
182 element
.value
= value
;
183 // Issue #56: Setting the placeholder causes problems if the element continues to have focus.
184 if (element
!== safeActiveElement()) {
185 // We can't use `triggerHandler` here because of dummy text/password inputs :(
186 setPlaceholder
.call(element
);
188 } else if ($element
.hasClass('placeholder')) {
189 if (!clearPlaceholder
.call(element
, true, value
)) {
190 element
.value
= value
;
193 element
.value
= value
;
195 // `set` can not return `undefined`; see http://jsapi.info/jquery/1.7.1/val#L2363
200 if (!isInputSupported
) {
201 valHooks
.input
= hooks
;
202 propHooks
.value
= hooks
;
204 if (!isTextareaSupported
) {
205 valHooks
.textarea
= hooks
;
206 propHooks
.value
= hooks
;
211 $(document
).delegate('form', 'submit.placeholder', function () {
212 // Clear the placeholder values so they don't get submitted
213 var $inputs
= $('.placeholder', this).each(clearPlaceholder
);
214 setTimeout( function () {
215 $inputs
.each(setPlaceholder
);
220 // Clear placeholder values upon page reload
221 $(window
).bind('beforeunload.placeholder', function () {
222 $('.placeholder').each( function () {