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281
static/vendor/jquery-placeholder/jquery-placeholder.js
vendored
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281
static/vendor/jquery-placeholder/jquery-placeholder.js
vendored
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/*!
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* jQuery Placeholder Plugin v2.3.1
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* https://github.com/mathiasbynens/jquery-placeholder
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*
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* Copyright 2011, 2015 Mathias Bynens
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* Released under the MIT license
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*/
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(function(factory) {
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if (typeof define === 'function' && define.amd) {
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// AMD
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define(['jquery'], factory);
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} else if (typeof module === 'object' && module.exports) {
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factory(require('jquery'));
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} else {
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// Browser globals
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factory(jQuery);
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}
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}(function($) {
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/****
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* Allows plugin behavior simulation in modern browsers for easier debugging.
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* When setting to true, use attribute "placeholder-x" rather than the usual "placeholder" in your inputs/textareas
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* i.e. <input type="text" placeholder-x="my placeholder text" />
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*/
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var debugMode = false;
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// Opera Mini v7 doesn't support placeholder although its DOM seems to indicate so
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var isOperaMini = Object.prototype.toString.call(window.operamini) === '[object OperaMini]';
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var isInputSupported = 'placeholder' in document.createElement('input') && !isOperaMini && !debugMode;
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var isTextareaSupported = 'placeholder' in document.createElement('textarea') && !isOperaMini && !debugMode;
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var valHooks = $.valHooks;
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var propHooks = $.propHooks;
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var hooks;
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var placeholder;
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var settings = {};
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if (isInputSupported && isTextareaSupported) {
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placeholder = $.fn.placeholder = function() {
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return this;
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};
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placeholder.input = true;
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placeholder.textarea = true;
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} else {
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placeholder = $.fn.placeholder = function(options) {
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var defaults = {customClass: 'placeholder'};
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settings = $.extend({}, defaults, options);
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return this.filter((isInputSupported ? 'textarea' : ':input') + '[' + (debugMode ? 'placeholder-x' : 'placeholder') + ']')
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.not('.'+settings.customClass)
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.not(':radio, :checkbox, [type=hidden]')
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.bind({
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'focus.placeholder': clearPlaceholder,
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'blur.placeholder': setPlaceholder
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})
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.data('placeholder-enabled', true)
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.trigger('blur.placeholder');
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};
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placeholder.input = isInputSupported;
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placeholder.textarea = isTextareaSupported;
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hooks = {
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'get': function(element) {
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var $element = $(element);
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var $passwordInput = $element.data('placeholder-password');
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if ($passwordInput) {
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return $passwordInput[0].value;
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}
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return $element.data('placeholder-enabled') && $element.hasClass(settings.customClass) ? '' : element.value;
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},
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'set': function(element, value) {
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var $element = $(element);
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var $replacement;
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var $passwordInput;
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if (value !== '') {
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$replacement = $element.data('placeholder-textinput');
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$passwordInput = $element.data('placeholder-password');
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if ($replacement) {
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clearPlaceholder.call($replacement[0], true, value) || (element.value = value);
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$replacement[0].value = value;
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} else if ($passwordInput) {
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clearPlaceholder.call(element, true, value) || ($passwordInput[0].value = value);
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element.value = value;
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}
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}
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if (!$element.data('placeholder-enabled')) {
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element.value = value;
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return $element;
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}
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if (value === '') {
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element.value = value;
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// Setting the placeholder causes problems if the element continues to have focus.
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if (element != safeActiveElement()) {
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// We can't use `triggerHandler` here because of dummy text/password inputs :(
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setPlaceholder.call(element);
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}
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} else {
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if ($element.hasClass(settings.customClass)) {
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clearPlaceholder.call(element);
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}
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element.value = value;
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}
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// `set` can not return `undefined`; see http://jsapi.info/jquery/1.7.1/val#L2363
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return $element;
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}
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};
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if (!isInputSupported) {
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valHooks.input = hooks;
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propHooks.value = hooks;
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}
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if (!isTextareaSupported) {
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valHooks.textarea = hooks;
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propHooks.value = hooks;
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}
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$(function() {
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// Look for forms
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$(document).delegate('form', 'submit.placeholder', function() {
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// Clear the placeholder values so they don't get submitted
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var $inputs = $('.'+settings.customClass, this).each(function() {
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clearPlaceholder.call(this, true, '');
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});
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setTimeout(function() {
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$inputs.each(setPlaceholder);
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}, 10);
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});
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});
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// Clear placeholder values upon page reload
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$(window).bind('beforeunload.placeholder', function() {
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var clearPlaceholders = true;
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try {
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// Prevent IE javascript:void(0) anchors from causing cleared values
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if (document.activeElement.toString() === 'javascript:void(0)') {
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clearPlaceholders = false;
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}
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} catch (exception) { }
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if (clearPlaceholders) {
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$('.'+settings.customClass).each(function() {
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this.value = '';
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});
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}
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});
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}
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function args(elem) {
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// Return an object of element attributes
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var newAttrs = {};
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var rinlinejQuery = /^jQuery\d+$/;
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$.each(elem.attributes, function(i, attr) {
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if (attr.specified && !rinlinejQuery.test(attr.name)) {
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newAttrs[attr.name] = attr.value;
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}
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});
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return newAttrs;
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}
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function clearPlaceholder(event, value) {
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var input = this;
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var $input = $(this);
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if (input.value === $input.attr((debugMode ? 'placeholder-x' : 'placeholder')) && $input.hasClass(settings.customClass)) {
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input.value = '';
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$input.removeClass(settings.customClass);
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if ($input.data('placeholder-password')) {
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$input = $input.hide().nextAll('input[type="password"]:first').show().attr('id', $input.removeAttr('id').data('placeholder-id'));
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// If `clearPlaceholder` was called from `$.valHooks.input.set`
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if (event === true) {
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$input[0].value = value;
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return value;
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}
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$input.focus();
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} else {
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input == safeActiveElement() && input.select();
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}
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}
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}
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function setPlaceholder(event) {
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var $replacement;
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var input = this;
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var $input = $(this);
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var id = input.id;
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// If the placeholder is activated, triggering blur event (`$input.trigger('blur')`) should do nothing.
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if (event && event.type === 'blur' && $input.hasClass(settings.customClass)) {
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return;
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}
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if (input.value === '') {
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if (input.type === 'password') {
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if (!$input.data('placeholder-textinput')) {
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try {
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$replacement = $input.clone().prop({ 'type': 'text' });
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} catch(e) {
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$replacement = $('<input>').attr($.extend(args(this), { 'type': 'text' }));
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}
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$replacement
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.removeAttr('name')
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.data({
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'placeholder-enabled': true,
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'placeholder-password': $input,
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'placeholder-id': id
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})
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.bind('focus.placeholder', clearPlaceholder);
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$input
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.data({
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'placeholder-textinput': $replacement,
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'placeholder-id': id
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})
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.before($replacement);
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}
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input.value = '';
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$input = $input.removeAttr('id').hide().prevAll('input[type="text"]:first').attr('id', $input.data('placeholder-id')).show();
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} else {
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var $passwordInput = $input.data('placeholder-password');
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if ($passwordInput) {
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$passwordInput[0].value = '';
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$input.attr('id', $input.data('placeholder-id')).show().nextAll('input[type="password"]:last').hide().removeAttr('id');
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}
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}
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$input.addClass(settings.customClass);
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$input[0].value = $input.attr((debugMode ? 'placeholder-x' : 'placeholder'));
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} else {
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$input.removeClass(settings.customClass);
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}
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}
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function safeActiveElement() {
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// Avoid IE9 `document.activeElement` of death
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try {
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return document.activeElement;
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} catch (exception) {}
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}
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}));
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