)<[^<]*)*<\/script>/gi,
scriptTypeRE = /^(?:text|application)\/javascript/i,
xmlTypeRE = /^(?:text|application)\/xml/i,
jsonType = 'application/json',
htmlType = 'text/html',
blankRE = /^\s*$/
// trigger a custom event and return false if it was cancelled
function triggerAndReturn(context, eventName, data) {
var event = $.Event(eventName)
$(context).trigger(event, data)
return !event.isDefaultPrevented()
}
// trigger an Ajax "global" event
function triggerGlobal(settings, context, eventName, data) {
if (settings.global) return triggerAndReturn(context || document, eventName, data)
}
// Number of active Ajax requests
$.active = 0
function ajaxStart(settings) {
if (settings.global && $.active++ === 0) triggerGlobal(settings, null, 'ajaxStart')
}
function ajaxStop(settings) {
if (settings.global && !(--$.active)) triggerGlobal(settings, null, 'ajaxStop')
}
// triggers an extra global event "ajaxBeforeSend" that's like "ajaxSend" but cancelable
function ajaxBeforeSend(xhr, settings) {
var context = settings.context
if (settings.beforeSend.call(context, xhr, settings) === false ||
triggerGlobal(settings, context, 'ajaxBeforeSend', [xhr, settings]) === false)
return false
triggerGlobal(settings, context, 'ajaxSend', [xhr, settings])
}
function ajaxSuccess(data, xhr, settings, deferred) {
var context = settings.context, status = 'success'
settings.success.call(context, data, status, xhr)
if (deferred) deferred.resolveWith(context, [data, status, xhr])
triggerGlobal(settings, context, 'ajaxSuccess', [xhr, settings, data])
ajaxComplete(status, xhr, settings)
}
// type: "timeout", "error", "abort", "parsererror"
function ajaxError(error, type, xhr, settings, deferred) {
var context = settings.context
settings.error.call(context, xhr, type, error)
if (deferred) deferred.rejectWith(context, [xhr, type, error])
triggerGlobal(settings, context, 'ajaxError', [xhr, settings, error || type])
ajaxComplete(type, xhr, settings)
}
// status: "success", "notmodified", "error", "timeout", "abort", "parsererror"
function ajaxComplete(status, xhr, settings) {
var context = settings.context
settings.complete.call(context, xhr, status)
triggerGlobal(settings, context, 'ajaxComplete', [xhr, settings])
ajaxStop(settings)
}
// Empty function, used as default callback
function empty() {}
$.ajaxJSONP = function(options, deferred){
if (!('type' in options)) return $.ajax(options)
var _callbackName = options.jsonpCallback,
callbackName = ($.isFunction(_callbackName) ?
_callbackName() : _callbackName) || ('jsonp' + (++jsonpID)),
script = document.createElement('script'),
originalCallback = window[callbackName],
responseData,
abort = function(errorType) {
$(script).triggerHandler('error', errorType || 'abort')
},
xhr = { abort: abort }, abortTimeout
if (deferred) deferred.promise(xhr)
$(script).on('load error', function(e, errorType){
clearTimeout(abortTimeout)
$(script).off().remove()
if (e.type == 'error' || !responseData) {
ajaxError(null, errorType || 'error', xhr, options, deferred)
} else {
ajaxSuccess(responseData[0], xhr, options, deferred)
}
window[callbackName] = originalCallback
if (responseData && $.isFunction(originalCallback))
originalCallback(responseData[0])
originalCallback = responseData = undefined
})
if (ajaxBeforeSend(xhr, options) === false) {
abort('abort')
return xhr
}
window[callbackName] = function(){
responseData = arguments
}
script.src = options.url.replace(/\?(.+)=\?/, '?$1=' + callbackName)
document.head.appendChild(script)
if (options.timeout > 0) abortTimeout = setTimeout(function(){
abort('timeout')
}, options.timeout)
return xhr
}
$.ajaxSettings = {
// Default type of request
type: 'GET',
// Callback that is executed before request
beforeSend: empty,
// Callback that is executed if the request succeeds
success: empty,
// Callback that is executed the the server drops error
error: empty,
// Callback that is executed on request complete (both: error and success)
complete: empty,
// The context for the callbacks
context: null,
// Whether to trigger "global" Ajax events
global: true,
// Transport
xhr: function () {
return new window.XMLHttpRequest()
},
// MIME types mapping
// IIS returns Javascript as "application/x-javascript"
accepts: {
script: 'text/javascript, application/javascript, application/x-javascript',
json: jsonType,
xml: 'application/xml, text/xml',
html: htmlType,
text: 'text/plain'
},
// Whether the request is to another domain
crossDomain: false,
// Default timeout
timeout: 0,
// Whether data should be serialized to string
processData: true,
// Whether the browser should be allowed to cache GET responses
cache: true
}
function mimeToDataType(mime) {
if (mime) mime = mime.split(';', 2)[0]
return mime && ( mime == htmlType ? 'html' :
mime == jsonType ? 'json' :
scriptTypeRE.test(mime) ? 'script' :
xmlTypeRE.test(mime) && 'xml' ) || 'text'
}
function appendQuery(url, query) {
if (query == '') return url
return (url + '&' + query).replace(/[&?]{1,2}/, '?')
}
// serialize payload and append it to the URL for GET requests
function serializeData(options) {
if (options.processData && options.data && $.type(options.data) != "string")
options.data = $.param(options.data, options.traditional)
if (options.data && (!options.type || options.type.toUpperCase() == 'GET'))
options.url = appendQuery(options.url, options.data), options.data = undefined
}
$.ajax = function(options){
var settings = $.extend({}, options || {}),
deferred = $.Deferred && $.Deferred()
for (key in $.ajaxSettings) if (settings[key] === undefined) settings[key] = $.ajaxSettings[key]
ajaxStart(settings)
if (!settings.crossDomain) settings.crossDomain = /^([\w-]+:)?\/\/([^\/]+)/.test(settings.url) &&
RegExp.$2 != window.location.host
if (!settings.url) settings.url = window.location.toString()
serializeData(settings)
if (settings.cache === false) settings.url = appendQuery(settings.url, '_=' + Date.now())
var dataType = settings.dataType, hasPlaceholder = /\?.+=\?/.test(settings.url)
if (dataType == 'jsonp' || hasPlaceholder) {
if (!hasPlaceholder)
settings.url = appendQuery(settings.url,
settings.jsonp ? (settings.jsonp + '=?') : settings.jsonp === false ? '' : 'callback=?')
return $.ajaxJSONP(settings, deferred)
}
var mime = settings.accepts[dataType],
headers = { },
setHeader = function(name, value) { headers[name.toLowerCase()] = [name, value] },
protocol = /^([\w-]+:)\/\//.test(settings.url) ? RegExp.$1 : window.location.protocol,
xhr = settings.xhr(),
nativeSetHeader = xhr.setRequestHeader,
abortTimeout
if (deferred) deferred.promise(xhr)
if (!settings.crossDomain) setHeader('X-Requested-With', 'XMLHttpRequest')
setHeader('Accept', mime || '*/*')
if (mime = settings.mimeType || mime) {
if (mime.indexOf(',') > -1) mime = mime.split(',', 2)[0]
xhr.overrideMimeType && xhr.overrideMimeType(mime)
}
if (settings.contentType || (settings.contentType !== false && settings.data && settings.type.toUpperCase() != 'GET'))
setHeader('Content-Type', settings.contentType || 'application/x-www-form-urlencoded')
if (settings.headers) for (name in settings.headers) setHeader(name, settings.headers[name])
xhr.setRequestHeader = setHeader
xhr.onreadystatechange = function(){
if (xhr.readyState == 4) {
xhr.onreadystatechange = empty
clearTimeout(abortTimeout)
var result, error = false
if ((xhr.status >= 200 && xhr.status < 300) || xhr.status == 304 || (xhr.status == 0 && protocol == 'file:')) {
dataType = dataType || mimeToDataType(settings.mimeType || xhr.getResponseHeader('content-type'))
result = xhr.responseText
try {
// http://perfectionkills.com/global-eval-what-are-the-options/
if (dataType == 'script') (1,eval)(result)
else if (dataType == 'xml') result = xhr.responseXML
else if (dataType == 'json') result = blankRE.test(result) ? null : $.parseJSON(result)
} catch (e) { error = e }
if (error) ajaxError(error, 'parsererror', xhr, settings, deferred)
else ajaxSuccess(result, xhr, settings, deferred)
} else {
ajaxError(xhr.statusText || null, xhr.status ? 'error' : 'abort', xhr, settings, deferred)
}
}
}
if (ajaxBeforeSend(xhr, settings) === false) {
xhr.abort()
ajaxError(null, 'abort', xhr, settings, deferred)
return xhr
}
if (settings.xhrFields) for (name in settings.xhrFields) xhr[name] = settings.xhrFields[name]
var async = 'async' in settings ? settings.async : true
xhr.open(settings.type, settings.url, async, settings.username, settings.password)
for (name in headers) nativeSetHeader.apply(xhr, headers[name])
if (settings.timeout > 0) abortTimeout = setTimeout(function(){
xhr.onreadystatechange = empty
xhr.abort()
ajaxError(null, 'timeout', xhr, settings, deferred)
}, settings.timeout)
// avoid sending empty string (#319)
xhr.send(settings.data ? settings.data : null)
return xhr
}
// handle optional data/success arguments
function parseArguments(url, data, success, dataType) {
var hasData = !$.isFunction(data)
return {
url: url,
data: hasData ? data : undefined,
success: !hasData ? data : $.isFunction(success) ? success : undefined,
dataType: hasData ? dataType || success : success
}
}
$.get = function(url, data, success, dataType){
return $.ajax(parseArguments.apply(null, arguments))
}
$.post = function(url, data, success, dataType){
var options = parseArguments.apply(null, arguments)
options.type = 'POST'
return $.ajax(options)
}
$.getJSON = function(url, data, success){
var options = parseArguments.apply(null, arguments)
options.dataType = 'json'
return $.ajax(options)
}
$.fn.load = function(url, data, success){
if (!this.length) return this
var self = this, parts = url.split(/\s/), selector,
options = parseArguments(url, data, success),
callback = options.success
if (parts.length > 1) options.url = parts[0], selector = parts[1]
options.success = function(response){
self.html(selector ?
$('').html(response.replace(rscript, "")).find(selector)
: response)
callback && callback.apply(self, arguments)
}
$.ajax(options)
return this
}
var escape = encodeURIComponent
function serialize(params, obj, traditional, scope){
var type, array = $.isArray(obj), hash = $.isPlainObject(obj)
$.each(obj, function(key, value) {
type = $.type(value)
if (scope) key = traditional ? scope :
scope + '[' + (hash || type == 'object' || type == 'array' ? key : '') + ']'
// handle data in serializeArray() format
if (!scope && array) params.add(value.name, value.value)
// recurse into nested objects
else if (type == "array" || (!traditional && type == "object"))
serialize(params, value, traditional, key)
else params.add(key, value)
})
}
$.param = function(obj, traditional){
var params = []
params.add = function(k, v){ this.push(escape(k) + '=' + escape(v)) }
serialize(params, obj, traditional)
return params.join('&').replace(/%20/g, '+')
}
})(Zepto)
;(function($){
$.fn.serializeArray = function() {
var result = [], el
$([].slice.call(this.get(0).elements)).each(function(){
el = $(this)
var type = el.attr('type')
if (this.nodeName.toLowerCase() != 'fieldset' &&
!this.disabled && type != 'submit' && type != 'reset' && type != 'button' &&
((type != 'radio' && type != 'checkbox') || this.checked))
result.push({
name: el.attr('name'),
value: el.val()
})
})
return result
}
$.fn.serialize = function(){
var result = []
this.serializeArray().forEach(function(elm){
result.push(encodeURIComponent(elm.name) + '=' + encodeURIComponent(elm.value))
})
return result.join('&')
}
$.fn.submit = function(callback) {
if (callback) this.bind('submit', callback)
else if (this.length) {
var event = $.Event('submit')
this.eq(0).trigger(event)
if (!event.isDefaultPrevented()) this.get(0).submit()
}
return this
}
})(Zepto)
;(function($){
// __proto__ doesn't exist on IE<11, so redefine
// the Z function to use object extension instead
if (!('__proto__' in {})) {
$.extend($.zepto, {
Z: function(dom, selector){
dom = dom || []
$.extend(dom, $.fn)
dom.selector = selector || ''
dom.__Z = true
return dom
},
// this is a kludge but works
isZ: function(object){
return $.type(object) === 'array' && '__Z' in object
}
})
}
// getComputedStyle shouldn't freak out when called
// without a valid element as argument
try {
getComputedStyle(undefined)
} catch(e) {
var nativeGetComputedStyle = getComputedStyle;
window.getComputedStyle = function(element, pseudoElement){
try {
return nativeGetComputedStyle(element, pseudoElement)
} catch(e) {
return null
}
}
}
})(Zepto)
TL.getJSON = Zepto.getJSON;
TL.ajax = Zepto.ajax;
})(TL)
// Based on https://github.com/madrobby/zepto/blob/5585fe00f1828711c04208372265a5d71e3238d1/src/ajax.js
// Zepto.js
// (c) 2010-2012 Thomas Fuchs
// Zepto.js may be freely distributed under the MIT license.
/*
Copyright (c) 2010-2012 Thomas Fuchs
http://zeptojs.com
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
/* **********************************************
Begin TL.Class.js
********************************************** */
/* TL.Class
Class powers the OOP facilities of the library.
================================================== */
TL.Class = function () {};
TL.Class.extend = function (/*Object*/ props) /*-> Class*/ {
// extended class with the new prototype
var NewClass = function () {
if (this.initialize) {
this.initialize.apply(this, arguments);
}
};
// instantiate class without calling constructor
var F = function () {};
F.prototype = this.prototype;
var proto = new F();
proto.constructor = NewClass;
NewClass.prototype = proto;
// add superclass access
NewClass.superclass = this.prototype;
// add class name
//proto.className = props;
//inherit parent's statics
for (var i in this) {
if (this.hasOwnProperty(i) && i !== 'prototype' && i !== 'superclass') {
NewClass[i] = this[i];
}
}
// mix static properties into the class
if (props.statics) {
TL.Util.extend(NewClass, props.statics);
delete props.statics;
}
// mix includes into the prototype
if (props.includes) {
TL.Util.extend.apply(null, [proto].concat(props.includes));
delete props.includes;
}
// merge options
if (props.options && proto.options) {
props.options = TL.Util.extend({}, proto.options, props.options);
}
// mix given properties into the prototype
TL.Util.extend(proto, props);
// allow inheriting further
NewClass.extend = TL.Class.extend;
// method for adding properties to prototype
NewClass.include = function (props) {
TL.Util.extend(this.prototype, props);
};
return NewClass;
};
/* **********************************************
Begin TL.Events.js
********************************************** */
/* TL.Events
adds custom events functionality to TL classes
================================================== */
TL.Events = {
addEventListener: function (/*String*/ type, /*Function*/ fn, /*(optional) Object*/ context) {
var events = this._tl_events = this._tl_events || {};
events[type] = events[type] || [];
events[type].push({
action: fn,
context: context || this
});
return this;
},
hasEventListeners: function (/*String*/ type) /*-> Boolean*/ {
var k = '_tl_events';
return (k in this) && (type in this[k]) && (this[k][type].length > 0);
},
removeEventListener: function (/*String*/ type, /*Function*/ fn, /*(optional) Object*/ context) {
if (!this.hasEventListeners(type)) {
return this;
}
for (var i = 0, events = this._tl_events, len = events[type].length; i < len; i++) {
if (
(events[type][i].action === fn) &&
(!context || (events[type][i].context === context))
) {
events[type].splice(i, 1);
return this;
}
}
return this;
},
fireEvent: function (/*String*/ type, /*(optional) Object*/ data) {
if (!this.hasEventListeners(type)) {
return this;
}
var event = TL.Util.mergeData({
type: type,
target: this
}, data);
var listeners = this._tl_events[type].slice();
for (var i = 0, len = listeners.length; i < len; i++) {
listeners[i].action.call(listeners[i].context || this, event);
}
return this;
}
};
TL.Events.on = TL.Events.addEventListener;
TL.Events.off = TL.Events.removeEventListener;
TL.Events.fire = TL.Events.fireEvent;
/* **********************************************
Begin TL.Browser.js
********************************************** */
/*
Based on Leaflet Browser
TL.Browser handles different browser and feature detections for internal use.
*/
(function() {
var ua = navigator.userAgent.toLowerCase(),
doc = document.documentElement,
ie = 'ActiveXObject' in window,
webkit = ua.indexOf('webkit') !== -1,
phantomjs = ua.indexOf('phantom') !== -1,
android23 = ua.search('android [23]') !== -1,
mobile = typeof orientation !== 'undefined',
msPointer = navigator.msPointerEnabled && navigator.msMaxTouchPoints && !window.PointerEvent,
pointer = (window.PointerEvent && navigator.pointerEnabled && navigator.maxTouchPoints) || msPointer,
ie3d = ie && ('transition' in doc.style),
webkit3d = ('WebKitCSSMatrix' in window) && ('m11' in new window.WebKitCSSMatrix()) && !android23,
gecko3d = 'MozPerspective' in doc.style,
opera3d = 'OTransition' in doc.style,
opera = window.opera;
var retina = 'devicePixelRatio' in window && window.devicePixelRatio > 1;
if (!retina && 'matchMedia' in window) {
var matches = window.matchMedia('(min-resolution:144dpi)');
retina = matches && matches.matches;
}
var touch = !window.L_NO_TOUCH && !phantomjs && (pointer || 'ontouchstart' in window || (window.DocumentTouch && document instanceof window.DocumentTouch));
TL.Browser = {
ie: ie,
ua: ua,
ie9: Boolean(ie && ua.match(/MSIE 9/i)),
ielt9: ie && !document.addEventListener,
webkit: webkit,
//gecko: (ua.indexOf('gecko') !== -1) && !webkit && !window.opera && !ie,
firefox: (ua.indexOf('gecko') !== -1) && !webkit && !window.opera && !ie,
android: ua.indexOf('android') !== -1,
android23: android23,
chrome: ua.indexOf('chrome') !== -1,
edge: ua.indexOf('edge/') !== -1,
ie3d: ie3d,
webkit3d: webkit3d,
gecko3d: gecko3d,
opera3d: opera3d,
any3d: !window.L_DISABLE_3D && (ie3d || webkit3d || gecko3d || opera3d) && !phantomjs,
mobile: mobile,
mobileWebkit: mobile && webkit,
mobileWebkit3d: mobile && webkit3d,
mobileOpera: mobile && window.opera,
touch: !! touch,
msPointer: !! msPointer,
pointer: !! pointer,
retina: !! retina,
orientation: function() {
var w = window.innerWidth,
h = window.innerHeight,
_orientation = "portrait";
if (w > h) {
_orientation = "landscape";
}
if (Math.abs(window.orientation) == 90) {
//_orientation = "landscape";
}
trace(_orientation);
return _orientation;
}
};
}());
/* **********************************************
Begin TL.Load.js
********************************************** */
/* TL.Load
Loads External Javascript and CSS
================================================== */
TL.Load = (function (doc) {
var loaded = [];
function isLoaded(url) {
var i = 0,
has_loaded = false;
for (i = 0; i < loaded.length; i++) {
if (loaded[i] == url) {
has_loaded = true;
}
}
if (has_loaded) {
return true;
} else {
loaded.push(url);
return false;
}
}
return {
css: function (urls, callback, obj, context) {
if (!isLoaded(urls)) {
TL.LoadIt.css(urls, callback, obj, context);
} else {
callback();
}
},
js: function (urls, callback, obj, context) {
if (!isLoaded(urls)) {
TL.LoadIt.js(urls, callback, obj, context);
} else {
callback();
}
}
};
})(this.document);
/*jslint browser: true, eqeqeq: true, bitwise: true, newcap: true, immed: true, regexp: false */
/*
LazyLoad makes it easy and painless to lazily load one or more external
JavaScript or CSS files on demand either during or after the rendering of a web
page.
Supported browsers include Firefox 2+, IE6+, Safari 3+ (including Mobile
Safari), Google Chrome, and Opera 9+. Other browsers may or may not work and
are not officially supported.
Visit https://github.com/rgrove/lazyload/ for more info.
Copyright (c) 2011 Ryan Grove
All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the 'Software'), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
@module lazyload
@class LazyLoad
@static
@version 2.0.3 (git)
*/
TL.LoadIt = (function (doc) {
// -- Private Variables ------------------------------------------------------
// User agent and feature test information.
var env,
// Reference to the element (populated lazily).
head,
// Requests currently in progress, if any.
pending = {},
// Number of times we've polled to check whether a pending stylesheet has
// finished loading. If this gets too high, we're probably stalled.
pollCount = 0,
// Queued requests.
queue = {css: [], js: []},
// Reference to the browser's list of stylesheets.
styleSheets = doc.styleSheets;
// -- Private Methods --------------------------------------------------------
/**
Creates and returns an HTML element with the specified name and attributes.
@method createNode
@param {String} name element name
@param {Object} attrs name/value mapping of element attributes
@return {HTMLElement}
@private
*/
function createNode(name, attrs) {
var node = doc.createElement(name), attr;
for (attr in attrs) {
if (attrs.hasOwnProperty(attr)) {
node.setAttribute(attr, attrs[attr]);
}
}
return node;
}
/**
Called when the current pending resource of the specified type has finished
loading. Executes the associated callback (if any) and loads the next
resource in the queue.
@method finish
@param {String} type resource type ('css' or 'js')
@private
*/
function finish(type) {
var p = pending[type],
callback,
urls;
if (p) {
callback = p.callback;
urls = p.urls;
urls.shift();
pollCount = 0;
// If this is the last of the pending URLs, execute the callback and
// start the next request in the queue (if any).
if (!urls.length) {
callback && callback.call(p.context, p.obj);
pending[type] = null;
queue[type].length && load(type);
}
}
}
/**
Populates the env variable with user agent and feature test
information.
@method getEnv
@private
*/
function getEnv() {
var ua = navigator.userAgent;
env = {
// True if this browser supports disabling async mode on dynamically
// created script nodes. See
// http://wiki.whatwg.org/wiki/Dynamic_Script_Execution_Order
async: doc.createElement('script').async === true
};
(env.webkit = /AppleWebKit\//.test(ua))
|| (env.ie = /MSIE/.test(ua))
|| (env.opera = /Opera/.test(ua))
|| (env.gecko = /Gecko\//.test(ua))
|| (env.unknown = true);
}
/**
Loads the specified resources, or the next resource of the specified type
in the queue if no resources are specified. If a resource of the specified
type is already being loaded, the new request will be queued until the
first request has been finished.
When an array of resource URLs is specified, those URLs will be loaded in
parallel if it is possible to do so while preserving execution order. All
browsers support parallel loading of CSS, but only Firefox and Opera
support parallel loading of scripts. In other browsers, scripts will be
queued and loaded one at a time to ensure correct execution order.
@method load
@param {String} type resource type ('css' or 'js')
@param {String|Array} urls (optional) URL or array of URLs to load
@param {Function} callback (optional) callback function to execute when the
resource is loaded
@param {Object} obj (optional) object to pass to the callback function
@param {Object} context (optional) if provided, the callback function will
be executed in this object's context
@private
*/
function load(type, urls, callback, obj, context) {
var _finish = function () { finish(type); },
isCSS = type === 'css',
nodes = [],
i, len, node, p, pendingUrls, url;
env || getEnv();
if (urls) {
// If urls is a string, wrap it in an array. Otherwise assume it's an
// array and create a copy of it so modifications won't be made to the
// original.
urls = typeof urls === 'string' ? [urls] : urls.concat();
// Create a request object for each URL. If multiple URLs are specified,
// the callback will only be executed after all URLs have been loaded.
//
// Sadly, Firefox and Opera are the only browsers capable of loading
// scripts in parallel while preserving execution order. In all other
// browsers, scripts must be loaded sequentially.
//
// All browsers respect CSS specificity based on the order of the link
// elements in the DOM, regardless of the order in which the stylesheets
// are actually downloaded.
if (isCSS || env.async || env.gecko || env.opera) {
// Load in parallel.
queue[type].push({
urls : urls,
callback: callback,
obj : obj,
context : context
});
} else {
// Load sequentially.
for (i = 0, len = urls.length; i < len; ++i) {
queue[type].push({
urls : [urls[i]],
callback: i === len - 1 ? callback : null, // callback is only added to the last URL
obj : obj,
context : context
});
}
}
}
// If a previous load request of this type is currently in progress, we'll
// wait our turn. Otherwise, grab the next item in the queue.
if (pending[type] || !(p = pending[type] = queue[type].shift())) {
return;
}
head || (head = doc.head || doc.getElementsByTagName('head')[0]);
pendingUrls = p.urls;
for (i = 0, len = pendingUrls.length; i < len; ++i) {
url = pendingUrls[i];
if (isCSS) {
node = env.gecko ? createNode('style') : createNode('link', {
href: url,
rel : 'stylesheet'
});
} else {
node = createNode('script', {src: url});
node.async = false;
}
node.className = 'lazyload';
node.setAttribute('charset', 'utf-8');
if (env.ie && !isCSS) {
node.onreadystatechange = function () {
if (/loaded|complete/.test(node.readyState)) {
node.onreadystatechange = null;
_finish();
}
};
} else if (isCSS && (env.gecko || env.webkit)) {
// Gecko and WebKit don't support the onload event on link nodes.
if (env.webkit) {
// In WebKit, we can poll for changes to document.styleSheets to
// figure out when stylesheets have loaded.
p.urls[i] = node.href; // resolve relative URLs (or polling won't work)
pollWebKit();
} else {
// In Gecko, we can import the requested URL into a