Config object that contains all of the configuration options for
this YUI instance.
This object is supplied by the implementer when instantiating YUI. Some properties have default values if they are not supplied by the implementer.
This object should not be updated directly because some values are cached. Use
applyConfig() to update the config object on a YUI instance that has already
been configured.
2in3Revision number of YUI 2in3 modules that should be used when loading YUI 2in3.
Default: "4"
aliasesAliases are dynamic groups of modules that can be used as shortcuts.
YUI({
aliases: {
davglass: [ 'node', 'yql', 'dd' ],
mine: [ 'davglass', 'autocomplete']
}
}).use('mine', function (Y) {
// Node, YQL, DD & AutoComplete available here.
});bootstrapIf true (the default), YUI will "bootstrap" the YUI Loader and module metadata
if they're needed to load additional dependencies and aren't already available.
Setting this to false will prevent YUI from automatically loading the Loader
and module metadata, so you will need to manually ensure that they're available
or handle dependency resolution yourself.
Default: true
combineIf true, YUI will use a combo handler to load multiple modules in as few
requests as possible.
The YUI CDN (which YUI uses by default) supports combo handling, but other
servers may not. If the server from which you're loading YUI does not support
combo handling, set this to false.
Providing a value for the base config property will cause combine to default
to false instead of true.
Default: true
comboBaseBase URL for a dynamic combo handler. This will be used to make combo-handled
module requests if combine is set to `true.
Default: "http://yui.yahooapis.com/combo?"
coreA list of modules that defines the YUI core (overrides the default list).
Default: ['get', 'features', 'intl-base', 'yui-log', 'yui-later', 'loader-base', 'loader-rollup', 'loader-yui3']
debugIf true, Y.log() messages will be written to the browser's debug console
when available and when useBrowserConsole is also true.
Default: true
delayUntilDelay the use callback until a specific event has passed (load, domready, contentready or available)
You can use load or domready strings by default:
YUI({
delayUntil: 'domready'
}, function (Y) {
// This will not execute until 'domeready' occurs.
});Or you can delay until a node is available (with available or contentready):
YUI({
delayUntil: {
event: 'available',
args : '#foo'
}
}, function (Y) {
// This will not execute until a node matching the selector "#foo" is
// available in the DOM.
});docThe browser document object associated with this YUI instance's win object.
When running in Node.js, this property is undefined, since there is no
document object.
errorFnCallback to execute when Y.error() is called. It receives the error message
and a JavaScript error object if one was provided.
This function is executed with the YUI instance as its this object.
Returning true from this function will prevent an exception from being thrown.
fetchCSSIf true, YUI will attempt to load CSS dependencies and skins. Set this to
false to prevent YUI from loading any CSS, or set it to the string "force"
to force CSS dependencies to be loaded even if their associated JS modules are
already loaded.
Default: true
filterFilter to apply to module urls. This filter will modify the default path for all modules.
The default path for the YUI library is the minified version of the files (e.g., event-min.js). The filter property can be a predefined filter or a custom filter. The valid predefined filters are:
You can also define a custom filter, which must be an object literal containing a search regular expression and a replacement string:
myFilter: {
searchExp : "-min\\.js",
replaceStr: "-debug.js"
}filtersHash of per-component filter specifications. If specified for a given component,
this overrides the global filter config.
YUI({
modules: {
'foo': './foo.js',
'bar': './bar.js',
'baz': './baz.js'
},
filters: {
'foo': {
searchExp: '.js',
replaceStr: '-coverage.js'
}
}
}).use('foo', 'bar', 'baz', function (Y) {
// foo-coverage.js is loaded
// bar.js is loaded
// baz.js is loaded
});forceArray of module names that should always be loaded when required, even if already present on the page.
globalReference to the global object for this execution context.
In a browser, this is the current window object. In Node.js, this is the
Node.js global object.
groupsA hash of module group definitions.
For each group you can specify a list of modules and the base path and combo spec to use when dynamically loading the modules.
groups: {
yui2: {
// specify whether or not this group has a combo service
combine: true,
// The comboSeperator to use with this group's combo handler
comboSep: ';',
// The maxURLLength for this server
maxURLLength: 500,
// the base path for non-combo paths
base: 'http://yui.yahooapis.com/2.8.0r4/build/',
// the path to the combo service
comboBase: 'http://yui.yahooapis.com/combo?',
// a fragment to prepend to the path attribute when
// when building combo urls
root: '2.8.0r4/build/',
// the module definitions
modules: {
yui2_yde: {
path: "yahoo-dom-event/yahoo-dom-event.js"
},
yui2_anim: {
path: "animation/animation.js",
requires: ['yui2_yde']
}
}
}
}injectedWhen the YUI seed file is dynamically loaded after the window.onload event has
fired, set this to true to tell YUI that it shouldn't wait for window.onload
to occur.
This ensures that components that rely on window.onload and the domready
custom event will work as expected even when YUI is dynamically injected.
Default: false
insertBeforeDOM element or id that should be used as the insertion point for dynamically
added <script> and <link> nodes.
langA list of languages to use in order of preference.
This list is matched against the list of available languages in modules that the YUI instance uses to determine the best possible localization of language sensitive modules.
Languages are represented using BCP 47 language tags, such as "en-GB" for English as used in the United Kingdom, or "zh-Hans-CN" for simplified Chinese as used in China. The list may be provided as a comma-separated string or as an array.
loaderPathPath to the Loader JS file, relative to the base path.
This is used to dynamically bootstrap the Loader when it's needed and isn't yet available.
Default: "loader/loader-min.js"
loadErrorFnA callback to execute when Loader fails to load one or more resources.
This could be because of a script load failure. It could also be because a
module fails to register itself when the requireRegistration config is true.
If this function is defined, the use() callback will only be called when the
loader succeeds. Otherwise, use() will always executes unless there was a
JavaScript error when attaching a module.
logExcludeA hash of log sources that should be not be logged. If specified, all sources will be logged except those on this list.
logFnAlternate console log function that should be used in environments without a
supported native console. This function is executed with the YUI instance as its
this object.
logIncludeA hash of log sources that should be logged. If specified, only messages from these sources will be logged. Others will be discarded.
logLevelThe minimum log level to log messages for. Log levels are defined incrementally. Messages greater than or equal to the level specified will be shown. All others will be discarded. The order of log levels in increasing priority is:
debug
info
warn
errorDefault: 'debug'
modulesA hash of module definitions to add to the list of available YUI modules. These
modules can then be dynamically loaded via the use() method.
This is a hash in which keys are module names and values are objects containing module metadata.
See Loader.addModule() for the supported module metadata fields. Also see
groups, which provides a way to configure the base and combo spec for a set of
modules.
modules: {
mymod1: {
requires: ['node'],
fullpath: '/mymod1/mymod1.js'
},
mymod2: {
requires: ['mymod1'],
fullpath: '/mymod2/mymod2.js'
},
mymod3: '/js/mymod3.js',
mycssmod: '/css/mycssmod.css'
}purgethresholdThe number of dynamic <script> nodes to insert by default before automatically
removing them when loading scripts.
This applies only to script nodes because removing the node will not make the evaluated script unavailable. Dynamic CSS nodes are not auto purged, because removing a linked style sheet will also remove the style definitions.
Default: 20
requireRegistrationIf true, Loader will expect all loaded scripts to be first-class YUI modules
that register themselves with the YUI global, and will trigger a failure if a
loaded script does not register a YUI module.
Default: false
rootRoot path to prepend to each module path when creating a combo-handled request.
This is updated for each YUI release to point to a specific version of the library; for example: "3.8.0/build/".
skinSkin configuration and customizations.
[defaultSkin='sam']
String
optional
Default skin name. This skin will be applied automatically to skinnable components if not overridden by a component-specific skin name.
[base='assets/skins/']
String
optional
Default base path for a skin,
relative to Loader's base path.
[overrides]
Object
optional
Component-specific skin name overrides. Specify
a component name as the key and, as the value, a string or array of strings
for a skin or skins that should be loaded for that component instead of the
defaultSkin.
throwFailIf true, Y.error() will generate or re-throw a JavaScript error. Otherwise,
errors are merely logged silently.
Default: true
timeoutTimeout in milliseconds before a dynamic JS or CSS request will be considered a failure. If not set, no timeout will be enforced.
useBrowserConsoleLog messages to the browser console if debug is true and the browser has a
supported console.
Default: true
useHistoryHTML5
If true, the Y.History alias will always point to
Y.HistoryHTML5 when the history-html5 module is loaded, even if
the current browser doesn't support HTML5 history.
If false, the Y.History alias will always point to
Y.HistoryHash when the history-hash module is loaded, even if
the current browser supports HTML5 history.
If neither true nor false, the
Y.History alias will point to the best available history adapter
that the browser supports. This is the default behavior.
useNativeES5Whether or not YUI should use native ES5 functionality when available for
features like Y.Array.each(), Y.Object(), etc.
When false, YUI will always use its own fallback implementations instead of
relying on ES5 functionality, even when ES5 functionality is available.
Default: true
useNativeJSONParseLeverage native JSON parse if the browser has a native implementation. In general, this is a good idea. See the Known Issues section in the JSON user guide for caveats. The default value is true for browsers with native JSON support.
Default: true
useNativeJSONStringifyLeverage native JSON stringify if the browser has a native implementation. In general, this is a good idea. See the Known Issues section in the JSON user guide for caveats. The default value is true for browsers with native JSON support.
Default: true
winThe browser window or frame that this YUI instance should operate in.
When running in Node.js, this property is undefined, since there is no
window object. Use global to get a reference to the global object that will
work in both browsers and Node.js.
windowResizeDelayDelay in milliseconds to wait after a window resize event before firing the
event. If another resize event occurs before this delay has elapsed, the
delay will start over to ensure that resize events are throttled.
Default: 40
yui2Default YUI 2 version used to build YUI 2 module urls.
This is used for intrinsic YUI 2 support via the 2in3 project. Also see the
2in3 config for pulling different revisions of the wrapped YUI 2 modules.
Default: "2.9.0"