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Authored by xuqi
Commit 8cc110877a0c7b38641ceea9a7ea606adfa67e53 1 parent ddd472f5

jquery placeholder

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* [zepto.lazyload](/zepto-lazyload) **yoho.zeptolazyload**
* [hammer](/hammer) **yoho.hammer**
* [sizzle](/sizzle) **yoho.sizzle**
* [json2](/json2) **yoho.json2**
\ No newline at end of file
* [json2](/json2) **yoho.json2**
* [jquery-placeholder](/jquery-placeholder)
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dist
_site
sea-modules
spm_modules
node_modules
.git
tests
examples
test
coverage
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# yoho.placeholder [![spm version](http://spm.yoho.cn/badge/yoho.placeholder)](http://spm.yoho.cn/package/yoho.placeholder)
---
jquery.placeholder
## Install
```
$ spm install yoho.placeholder --save
```
## Usage
```js
var placeholder = require('yoho.placeholder');
// use yoho.placeholder
$('[placeholder]').placeholder();
```
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/*!
* jQuery Placeholder Plugin v2.3.0
* https://github.com/mathiasbynens/jquery-placeholder
*
* Copyright 2011, 2015 Mathias Bynens
* Released under the MIT license
*/
var jQuery = require('yoho.jquery');
(function($) {
/****
* Allows plugin behavior simulation in modern browsers for easier debugging.
* When setting to true, use attribute "placeholder-x" rather than the usual "placeholder" in your inputs/textareas
* i.e. <input type="text" placeholder-x="my placeholder text" />
*/
var debugMode = false;
// Opera Mini v7 doesn't support placeholder although its DOM seems to indicate so
var isOperaMini = Object.prototype.toString.call(window.operamini) === '[object OperaMini]';
var isInputSupported = 'placeholder' in document.createElement('input') && !isOperaMini && !debugMode;
var isTextareaSupported = 'placeholder' in document.createElement('textarea') && !isOperaMini && !debugMode;
var valHooks = $.valHooks;
var propHooks = $.propHooks;
var hooks;
var placeholder;
var settings = {};
if (isInputSupported && isTextareaSupported) {
placeholder = $.fn.placeholder = function() {
return this;
};
placeholder.input = true;
placeholder.textarea = true;
} else {
placeholder = $.fn.placeholder = function(options) {
var defaults = {customClass: 'placeholder'};
settings = $.extend({}, defaults, options);
return this.filter((isInputSupported ? 'textarea' : ':input') + '[' + (debugMode ? 'placeholder-x' : 'placeholder') + ']')
.not('.'+settings.customClass)
.not(':radio, :checkbox, :hidden')
.bind({
'focus.placeholder': clearPlaceholder,
'blur.placeholder': setPlaceholder
})
.data('placeholder-enabled', true)
.trigger('blur.placeholder');
};
placeholder.input = isInputSupported;
placeholder.textarea = isTextareaSupported;
hooks = {
'get': function(element) {
var $element = $(element);
var $passwordInput = $element.data('placeholder-password');
if ($passwordInput) {
return $passwordInput[0].value;
}
return $element.data('placeholder-enabled') && $element.hasClass(settings.customClass) ? '' : element.value;
},
'set': function(element, value) {
var $element = $(element);
var $replacement;
var $passwordInput;
if (value !== '') {
$replacement = $element.data('placeholder-textinput');
$passwordInput = $element.data('placeholder-password');
if ($replacement) {
clearPlaceholder.call($replacement[0], true, value) || (element.value = value);
$replacement[0].value = value;
} else if ($passwordInput) {
clearPlaceholder.call(element, true, value) || ($passwordInput[0].value = value);
element.value = value;
}
}
if (!$element.data('placeholder-enabled')) {
element.value = value;
return $element;
}
if (value === '') {
element.value = value;
// Setting the placeholder causes problems if the element continues to have focus.
if (element != safeActiveElement()) {
// We can't use `triggerHandler` here because of dummy text/password inputs :(
setPlaceholder.call(element);
}
} else {
if ($element.hasClass(settings.customClass)) {
clearPlaceholder.call(element);
}
element.value = value;
}
// `set` can not return `undefined`; see http://jsapi.info/jquery/1.7.1/val#L2363
return $element;
}
};
if (!isInputSupported) {
valHooks.input = hooks;
propHooks.value = hooks;
}
if (!isTextareaSupported) {
valHooks.textarea = hooks;
propHooks.value = hooks;
}
$(function() {
// Look for forms
$(document).delegate('form', 'submit.placeholder', function() {
// Clear the placeholder values so they don't get submitted
var $inputs = $('.'+settings.customClass, this).each(function() {
clearPlaceholder.call(this, true, '');
});
setTimeout(function() {
$inputs.each(setPlaceholder);
}, 10);
});
});
// Clear placeholder values upon page reload
$(window).bind('beforeunload.placeholder', function() {
var clearPlaceholders = true;
try {
// Prevent IE javascript:void(0) anchors from causing cleared values
if (document.activeElement.toString() === 'javascript:void(0)') {
clearPlaceholders = false;
}
} catch (exception) { }
if (clearPlaceholders) {
$('.'+settings.customClass).each(function() {
this.value = '';
});
}
});
}
function args(elem) {
// Return an object of element attributes
var newAttrs = {};
var rinlinejQuery = /^jQuery\d+$/;
$.each(elem.attributes, function(i, attr) {
if (attr.specified && !rinlinejQuery.test(attr.name)) {
newAttrs[attr.name] = attr.value;
}
});
return newAttrs;
}
function clearPlaceholder(event, value) {
var input = this;
var $input = $(this);
if (input.value === $input.attr((debugMode ? 'placeholder-x' : 'placeholder')) && $input.hasClass(settings.customClass)) {
input.value = '';
$input.removeClass(settings.customClass);
if ($input.data('placeholder-password')) {
$input = $input.hide().nextAll('input[type="password"]:first').show().attr('id', $input.removeAttr('id').data('placeholder-id'));
// If `clearPlaceholder` was called from `$.valHooks.input.set`
if (event === true) {
$input[0].value = value;
return value;
}
$input.focus();
} else {
input == safeActiveElement() && input.select();
}
}
}
function setPlaceholder(event) {
var $replacement;
var input = this;
var $input = $(this);
var id = input.id;
// If the placeholder is activated, triggering blur event (`$input.trigger('blur')`) should do nothing.
if (event && event.type === 'blur' && $input.hasClass(settings.customClass)) {
return;
}
if (input.value === '') {
if (input.type === 'password') {
if (!$input.data('placeholder-textinput')) {
try {
$replacement = $input.clone().prop({ 'type': 'text' });
} catch(e) {
$replacement = $('<input>').attr($.extend(args(this), { 'type': 'text' }));
}
$replacement
.removeAttr('name')
.data({
'placeholder-enabled': true,
'placeholder-password': $input,
'placeholder-id': id
})
.bind('focus.placeholder', clearPlaceholder);
$input
.data({
'placeholder-textinput': $replacement,
'placeholder-id': id
})
.before($replacement);
}
input.value = '';
$input = $input.removeAttr('id').hide().prevAll('input[type="text"]:first').attr('id', $input.data('placeholder-id')).show();
} else {
var $passwordInput = $input.data('placeholder-password');
if ($passwordInput) {
$passwordInput[0].value = '';
$input.attr('id', $input.data('placeholder-id')).show().nextAll('input[type="password"]:last').hide().removeAttr('id');
}
}
$input.addClass(settings.customClass);
$input[0].value = $input.attr((debugMode ? 'placeholder-x' : 'placeholder'));
} else {
$input.removeClass(settings.customClass);
}
}
function safeActiveElement() {
// Avoid IE9 `document.activeElement` of death
try {
return document.activeElement;
} catch (exception) {}
}
}(jQuery));
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{
"name": "yoho.placeholder",
"version": "0.0.1",
"description": "jquery.placeholder",
"keywords": [],
"homepage": "",
"author": "xuqi <xuqi9010@gmail.com>",
"repository": {
"type": "git",
"url": ""
},
"bugs": {
"url": ""
},
"licenses": "MIT",
"spm": {
"main": "jquery.placeholder.js",
"dependencies": {
"yoho.jquery": "1.8.3"
},
"devDependencies": {
"expect.js": "0.3.1"
}
},
"devDependencies": {
"spm": "3"
},
"scripts": {
"test": "spm test",
"build": "spm build"
}
}
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