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AngularJS API Reference auto auto/service auto/service/$injector auto/service/$provide ng ng/directive ng/directive/a ng/directive/form ng/directive/input ng/directive/input[checkbox] ng/directive/input[date] ng/directive/input[dateTimeLocal] ng/directive/input[email] ng/directive/input[month] ng/directive/input[number] ng/directive/input[radio] ng/directive/input[text] ng/directive/input[time] ng/directive/input[url] ng/directive/input[week] ng/directive/ngApp ng/directive/ngBind ng/directive/ngBindHtml ng/directive/ngBindTemplate ng/directive/ngBlur ng/directive/ngChange ng/directive/ngChecked ng/directive/ngClass ng/directive/ngClassEven ng/directive/ngClassOdd ng/directive/ngClick ng/directive/ngCloak ng/directive/ngController ng/directive/ngCopy ng/directive/ngCsp ng/directive/ngCut ng/directive/ngDblclick ng/directive/ngDisabled ng/directive/ngFocus ng/directive/ngForm ng/directive/ngHide ng/directive/ngHref ng/directive/ngIf ng/directive/ngInclude ng/directive/ngInit ng/directive/ngKeydown ng/directive/ngKeypress ng/directive/ngKeyup ng/directive/ngList ng/directive/ngModel ng/directive/ngModelOptions ng/directive/ngMousedown ng/directive/ngMouseenter ng/directive/ngMouseleave ng/directive/ngMousemove ng/directive/ngMouseover ng/directive/ngMouseup ng/directive/ngNonBindable ng/directive/ngOpen ng/directive/ngPaste ng/directive/ngPluralize ng/directive/ngReadonly ng/directive/ngRepeat ng/directive/ngSelected ng/directive/ngShow ng/directive/ngSrc ng/directive/ngSrcset ng/directive/ngStyle ng/directive/ngSubmit ng/directive/ngSwitch ng/directive/ngTransclude ng/directive/ngValue ng/directive/script ng/directive/select ng/directive/textarea ng/filter ng/filter/currency ng/filter/date ng/filter/filter ng/filter/json ng/filter/limitTo ng/filter/lowercase ng/filter/number ng/filter/orderBy ng/filter/uppercase ng/function ng/function/angular.bind ng/function/angular.bootstrap ng/function/angular.copy ng/function/angular.element ng/function/angular.equals ng/function/angular.extend ng/function/angular.forEach ng/function/angular.fromJson ng/function/angular.identity ng/function/angular.injector ng/function/angular.isArray ng/function/angular.isDate ng/function/angular.isDefined ng/function/angular.isElement ng/function/angular.isFunction ng/function/angular.isNumber ng/function/angular.isObject ng/function/angular.isString ng/function/angular.isUndefined ng/function/angular.lowercase ng/function/angular.module ng/function/angular.noop ng/function/angular.toJson ng/function/angular.uppercase ng/object ng/object/angular.version ng/provider ng/provider/$animateProvider ng/provider/$compileProvider ng/provider/$controllerProvider ng/provider/$filterProvider ng/provider/$httpProvider ng/provider/$interpolateProvider ng/provider/$locationProvider ng/provider/$logProvider ng/provider/$parseProvider ng/provider/$rootScopeProvider ng/provider/$sceDelegateProvider ng/provider/$sceProvider ng/service ng/service/$anchorScroll ng/service/$animate ng/service/$cacheFactory ng/service/$compile ng/service/$controller ng/service/$document ng/service/$exceptionHandler ng/service/$filter ng/service/$http ng/service/$httpBackend ng/service/$interpolate ng/service/$interval ng/service/$locale ng/service/$location ng/service/$log ng/service/$parse ng/service/$q ng/service/$rootElement ng/service/$rootScope ng/service/$sce ng/service/$sceDelegate ng/service/$templateCache ng/service/$timeout ng/service/$window ng/type ng/type/$cacheFactory.Cache ng/type/$compile.directive.Attributes ng/type/$rootScope.Scope ng/type/angular.Module ng/type/form.FormController ng/type/ngModel.NgModelController ngAnimate ngAnimate/provider ngAnimate/provider/$animateProvider ngAnimate/service ngAnimate/service/$animate ngCookies ngCookies/service ngCookies/service/$cookies ngCookies/service/$cookieStore ngMessages ngMessages/directive ngMessages/directive/ngMessage ngMessages/directive/ngMessages ngMock ngMock/function ngMock/function/angular.mock.dump ngMock/function/angular.mock.inject ngMock/function/angular.mock.module ngMock/object ngMock/object/angular.mock ngMock/provider ngMock/provider/$exceptionHandlerProvider ngMock/service ngMock/service/$exceptionHandler ngMock/service/$httpBackend ngMock/service/$interval ngMock/service/$log ngMock/service/$timeout ngMock/type ngMock/type/angular.mock.TzDate ngMockE2E ngMockE2E/service ngMockE2E/service/$httpBackend ngResource ngResource/service ngResource/service/$resource ngRoute ngRoute/directive ngRoute/directive/ngView ngRoute/provider ngRoute/provider/$routeProvider ngRoute/service ngRoute/service/$route ngRoute/service/$routeParams ngSanitize ngSanitize/filter ngSanitize/filter/linky ngSanitize/service ngSanitize/service/$sanitize ngTouch ngTouch/directive ngTouch/directive/ngClick ngTouch/directive/ngSwipeLeft ngTouch/directive/ngSwipeRight ngTouch/service ngTouch/service/$swipe

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AngularJS: API: ng

`ng`

ng (core module)

The ng module is loaded by default when an AngularJS application is started. The module itself contains the essential components for an AngularJS application to function. The table below lists a high level breakdown of each of the services/factories, filters, directives and testing components available within this core module.

模塊組件

Function

名稱	描述
angular.lowercase	轉換指定的字符串到小寫。
angular.uppercase	Converts the specified string to uppercase.
angular.forEach	Invokes the `iterator` function once for each item in `obj` collection, which can be either an object or an array. The `iterator` function is invoked with `iterator(value, key)`, where `value` is the value of an object property or an array element and `key` is the object property key or array element index. Specifying a `context` for the function is optional.
angular.extend	Extends the destination object `dst` by copying all of the properties from the `src` object(s) to `dst`. You can specify multiple `src` objects.
angular.noop	A function that performs no operations. 這個函數(shù)在使用函數(shù)風格寫代碼時很有用。 `Function foo(callback) { var result = calculateResult(); (callback \|\| angular.noop)(result); }`
angular.identity	A function that returns its first argument. This function is useful when writing code in the functional style.
angular.isUndefined	檢測引用是否未定義。
angular.isDefined	檢測引用是否已定義。
angular.isObject	檢測引用是否為一個`Object`. Unlike `typeof` in JavaScript, `null`s are not considered to be objects. Note that JavaScript arrays are objects.
angular.isString	檢測引用是否是一個 `String`.
angular.isNumber	檢測引用是否是一個 `Number`.
angular.isDate	檢測值是否為日期。
angular.isArray	檢測引用是否為一個`Array`.
angular.isFunction	檢測引用是否是一個 `Function`.
angular.isElement	檢測引用是否為一個DOM元素（或是封裝的jQuery元素）。
angular.copy	Creates a deep copy of `source`, which should be an object or an array.
angular.equals	Determines if two objects or two values are equivalent. Supports value types, regular expressions, arrays and objects.
angular.bind	Returns a function which calls function `fn` bound to `self` (`self` becomes the `this` for `fn`). You can supply optional `args` that are prebound to the function. This feature is also known as partial application, as distinguished from function currying.
angular.toJson	Serializes input into a JSON-formatted string. Properties with leading $$ characters will be stripped since angular uses this notation internally.
angular.fromJson	反序列化JSON字符串。
angular.bootstrap	Use this function to manually start up angular application.
angular.injector	Creates an injector function that can be used for retrieving services as well as for 依賴注入 (see 依賴注入).
angular.element	Wraps a raw DOM element or HTML string as a jQuery element.
angular.module	The `angular.module` is a global place for creating, registering and retrieving Angular modules. All modules (angular core or 3rd party) that should be available to an application must be registered using this mechanism.

Directive

名稱	描述
ngApp	Use this directive to auto-bootstrap an AngularJS application. The `ngApp` directive designates the root element of the application and is typically placed near the root element of the page -例如 on the `<body>` or `<html>` tags.
a	Modifies the default behavior of the html A tag so that the default action is prevented when the href attribute is empty.
ngHref	Using Angular markup like `{{hash}}` in an href attribute will make the link go to the wrong URL if the user clicks it before Angular has a chance to replace the `{{hash}}` markup with its value. Until Angular replaces the markup the link will be broken and will most likely return a 404 error.
ngSrc	Using Angular markup like `{{hash}}` in a `src` attribute doesn't work right: The browser will fetch from the URL with the literal text `{{hash}}` until Angular replaces the expression inside `{{hash}}`. The `ngSrc` directive solves this problem.
ngSrcset	Using Angular markup like `{{hash}}` in a `srcset` attribute doesn't work right: The browser will fetch from the URL with the literal text `{{hash}}` until Angular replaces the expression inside `{{hash}}`. The `ngSrcset` directive solves this problem.
ngDisabled	The following markup will make the button enabled on Chrome/Firefox but not on IE8 and older IEs: `<div ng-init="scope = { isDisabled: false }"> <button disabled="{{scope.isDisabled}}">Disabled</button> </div>`
ngChecked	HTML規(guī)范不要求瀏覽器對布爾型屬性必須給出值，例如checked(它們存在表示true，不存在表示false)。如果我們放置了一個Angular動態(tài)表達式到這樣的屬性上，在瀏覽器刪除屬性時綁定信息將會丟失。 The `ngChecked` directive solves this problem for the `checked` attribute. 這個指令不會被瀏覽器刪除，并提供了一個永久的可靠的地方存放綁定信息。
ngReadonly	HTML規(guī)范不要求瀏覽器對布爾型屬性必須給出值，例如readonly(它們存在表示true，不存在表示false)。如果我們放置了一個Angular動態(tài)表達式到這樣的屬性上，在瀏覽器刪除屬性時綁定信息將會丟失。 The `ngReadonly` directive solves this problem for the `readonly` attribute. 這個指令不會被瀏覽器刪除，并提供了一個永久的可靠的地方存放綁定信息。
ngSelected	HTML規(guī)范不要求瀏覽器對布爾型屬性必須給出值，例如selected(它們存在表示true，不存在表示false)。如果我們放置了一個Angular動態(tài)表達式到這樣的屬性上，在瀏覽器刪除屬性時綁定信息將會丟失。 The `ngSelected` directive solves this problem for the `selected` attribute. 這個指令不會被瀏覽器刪除，并提供了一個永久的可靠的地方存放綁定信息。
ngOpen	HTML規(guī)范不要求瀏覽器對布爾型屬性必須給出值，例如open(它們存在表示true，不存在表示false)。如果我們放置了一個Angular動態(tài)表達式到這樣的屬性上，在瀏覽器刪除屬性時綁定信息將會丟失。 The `ngOpen` directive solves this problem for the `open` attribute. 這個指令不會被瀏覽器刪除，并提供了一個永久的可靠的地方存放綁定信息。
ngForm	可嵌套的`form`指令別名。HTML不允許form元素嵌套。 It is useful to nest forms, for example if the validity of a sub-group of controls needs to be determined.
form	Directive that instantiates FormController.
textarea	HTML textarea element control with angular data-binding. The data-binding and validation properties of this element are exactly the same as those of the input element.
input	HTML input element control with angular data-binding. Input control follows HTML5 input types and polyfills the HTML5 validation behavior for older browsers.
ngModel	The `ngModel` directive binds an `input`,`select`, `textarea` (or custom form control) to a property on the scope using NgModelController, which is created and exposed by this directive.
ngChange	Evaluate the given expression when the user changes the input. The expression is evaluated immediately, unlike the JavaScript onchange event which only triggers at the end of a change (usually, when the user leaves the form element or presses the return key). The expression is not evaluated when the value change is coming from the model.
ngList	Text input that converts between a delimited string and an array of strings. The delimiter can be a fixed string (by default a comma) or a regular expression.
ngValue	Binds the given expression to the value of `input[select]` or `input[radio]`, so that when the element is selected, the `ngModel` of that element is set to the bound value.
ngModelOptions	Allows tuning how model updates are done. Using `ngModelOptions` you can specify a custom list of events that will trigger a model update and/or a debouncing delay so that the actual update only takes place when a timer expires; this timer will be reset after another change takes place.
ngBind	The `ngBind` attribute tells Angular to replace the text content of the specified HTML element with the value of a given expression, and to update the text content when the value of that expression changes.
ngBindTemplate	The `ngBindTemplate` directive specifies that the element text content should be replaced with the interpolation of the template in the `ngBindTemplate` attribute. Unlike `ngBind`, the `ngBindTemplate` can contain multiple `{{` `}}` expressions. This directive is needed since some HTML elements (such as TITLE and OPTION) cannot contain SPAN elements.
ngBindHtml	Creates a binding that will innerHTML the result of evaluating the `expression` into the current element in a secure way. 默認情況下， the innerHTML-ed content will be sanitized using the $sanitize service. To utilize this functionality, ensure that `$sanitize` is available, 例如，by including `ngSanitize` in your module's dependencies (not in core Angular.) You may also bypass sanitization for values you know are safe. To do so, bind to an explicitly trusted value via $sce.trustAsHtml. See the example under Strict Contextual Escaping (SCE).
ngClass	The `ngClass` directive allows you to dynamically set CSS classes on an HTML element by databinding an expression that represents all classes to be added.
ngClassOdd	The `ngClassOdd` and `ngClassEven` directives work exactly as ngClass, except they work in conjunction with `ngRepeat` and take effect only on odd (even) rows.
ngClassEven	The `ngClassOdd` and `ngClassEven` directives work exactly as ngClass, except they work in conjunction with `ngRepeat` and take effect only on odd (even) rows.
ngCloak	The `ngCloak` directive is used to prevent the Angular html template from being briefly displayed by the browser in its raw (uncompiled) form while your application is loading. Use this directive to avoid the undesirable flicker effect caused by the html template display.
ngController	The `ngController` directive attaches a controller class to the view. This is a key aspect of how angular supports the principles behind the Model-View-Controller design pattern.
ngCsp	Enables CSP (Content Security Policy) support.
ngClick	The ngClick directive allows you to specify custom behavior when an element is clicked.
ngDblclick	The `ngDblclick` directive allows you to 指定自定義行為到a dblclick事件上。
ngMousedown	The ngMousedown directive allows you to 指定自定義行為到mousedown事件上。
ngMouseup	指定自定義行為到mouseup事件上。
ngMouseover	指定自定義行為到mouseover事件上。
ngMouseenter	指定自定義行為到mouseenter事件上。
ngMouseleave	指定自定義行為到mouseleave事件上。
ngMousemove	指定自定義行為到mousemove事件上。
ngKeydown	指定自定義行為到keydown事件上。
ngKeyup	指定自定義行為到keyup事件上。
ngKeypress	指定自定義行為到keypress事件上。
ngSubmit	Enables binding Angular表達式s to onsubmit events.
ngFocus	指定自定義行為到focus事件上。
ngBlur	指定自定義行為到blur事件上。
ngCopy	指定自定義行為到copy事件上。
ngCut	為剪切事件指定自定義行為。
ngPaste	指定自定義行為到paste事件上。
ngIf	The `ngIf` directive removes or recreates a portion of the DOM tree based on an {expression}. If the expression assigned to `ngIf` evaluates to a false value then the element is removed from the DOM, otherwise a clone of the element is reinserted into the DOM.
ngInclude	Fetches, compiles and includes an external HTML fragment.
ngInit	The `ngInit` directive allows you to evaluate an expression in the current scope.
ngNonBindable	The `ngNonBindable` directive tells Angular not to compile or bind the contents of the current DOM element. This is useful if the element contains what appears to be Angular directives and bindings but which should be ignored by Angular. This could be the case if you have a site that displays snippets of code, for instance.
ngPluralize	`ngPluralize` is a directive that displays messages according to en-US localization rules. These rules are bundled with angular.js, but can be overridden (see Angular i18n dev guide). You configure ngPluralize directive by specifying the mappings between 多元化條目 and the strings to be displayed.
ngRepeat	The `ngRepeat` directive instantiates a template once per item from a collection. Each template instance gets its own scope, where the given loop variable is set to the current collection item, and `$index` is set to the item index or key.
ngShow	The `ngShow` directive shows or hides the given HTML element based on the expression provided to the ngShow attribute. The element is shown or hidden by removing or adding the `ng-hide` CSS class onto the element. The `.ng-hide` CSS class is predefined in AngularJS and sets the display style to none (using an !important flag). For CSP mode please add `angular-csp.css` to your html file (see ngCsp).
ngHide	The `ngHide` directive shows or hides the given HTML element based on the expression provided to the ngHide attribute. The element is shown or hidden by removing or adding the `ng-hide` CSS class onto the element. The `.ng-hide` CSS class is predefined in AngularJS and sets the display style to none (using an !important flag). For CSP mode please add `angular-csp.css` to your html file (see ngCsp).
ngStyle	The `ngStyle` directive allows you to set CSS style on an HTML element conditionally.
ngSwitch	The `ngSwitch` directive is used to conditionally swap DOM structure on your template based on a scope expression. Elements within `ngSwitch` but without `ngSwitchWhen` or `ngSwitchDefault` directives will be preserved at the location as specified in the template.
ngTransclude	Directive that marks the insertion point for the transcluded DOM of the nearest parent directive that uses transclusion.
script	Load the content of a `<script>` element into `$templateCache`, so that the template can be used by `ngInclude`, `ngView`, or directives. The type of the `<script>` element must be specified as `text/ng-template`, and a cache name for the template must be assigned through the element's `id`, which can then be used as a directive's `templateUrl`.
select	HTML `SELECT` element with angular data-binding.

Object

名稱	描述
angular.version	An object that contains information about the current AngularJS version. This object has the following properties:

Type

名稱	描述
angular.Module	Interface for configuring angular modules.
$cacheFactory.Cache	A cache object used to store and retrieve data, primarily used by $http and the script directive to cache templates and other data.
$compile.directive.Attributes	A shared object between directive compile / linking functions which contains normalized DOM element attributes. The values reflect current binding state `{{ }}`. The normalization is needed since all of these are treated as equivalent in Angular:
form.FormController	`FormController` keeps track of all its controls and nested forms as well as the state of them, such as being valid/invalid or dirty/pristine.
ngModel.NgModelController	`NgModelController` provides API for the `ng-model` directive. The controller contains services for data-binding, validation, CSS updates, and value formatting and parsing. It purposefully does not contain any logic which deals with DOM rendering or listening to DOM events. Such DOM related logic should be provided by other directives which make use of `NgModelController` for data-binding.
$rootScope.Scope	A root scope can be retrieved using the $rootScope key from the $injector. Child scopes are created using the $new() method. (Most scopes are created automatically when compiled HTML template is executed.)

Service

名稱	描述
$anchorScroll	When called, it checks current value of `$location.hash()` and scrolls to the related element, according to rules specified in Html5 spec.
$animate	The $animate service provides rudimentary DOM manipulation functions to insert, remove and move elements within the DOM, as well as adding and removing classes. This service is the core service used by the ngAnimate $animator service which provides high-level animation hooks for CSS and JavaScript.
$cacheFactory	Factory that constructs Cache objects and gives access to them.
$templateCache	The first time a template is used, it is loaded in the template cache for quick retrieval. You can load templates directly into the cache in a `script` tag, or by consuming the `$templateCache` service directly.
$compile	Compiles an HTML string or DOM into a template and produces a template function, which can then be used to link `scope` and the template together.
$controller	`$controller` service is responsible for instantiating controllers.
$document	A jQuery or jqLite wrapper for the browser's `window.document` object.
$exceptionHandler	Any uncaught exception in Angular表達式s is delegated to this service. The default implementation simply delegates to `$log.error` which logs it into the browser console.
$filter	Filters are used for formatting data displayed to the user.
$http	The `$http` service is a core Angular service that facilitates communication with the remote HTTP servers via the browser's XMLHttpRequest object or via JSONP.
$httpBackend	HTTP backend used by the Service that delegates to XMLHttpRequest object or JSONP and deals with browser incompatibilities.
$interpolate	Compiles a string with markup into an interpolation function. This service is used by the HTML $compile service for data binding. See $interpolateProvider for configuring the interpolation markup.
$interval	Angular's wrapper for `window.setInterval`. The `fn` function is executed every `delay` milliseconds.
$locale	$locale service provides localization rules for various Angular components. As of right now the only public api is:
$location	The $location service parses the URL in the browser address bar (based on the window.location) and makes the URL available to your application. Changes to the URL in the address bar are reflected into $location service and changes to $location are reflected into the browser address bar.
$log	Simple service for logging. Default implementation safely writes the message into the browser's console (if present).
$parse	Converts Angular expression into a function.
$q	A promise/deferred implementation inspired by Kris Kowal's Q.
$rootElement	The root element of Angular application. This is either the element where ngApp was declared or the element passed into `angular.bootstrap`. The element represent the root element of application. It is also the location where the applications $injector service gets published, it can be retrieved using `$rootElement.injector()`.
$rootScope	Every application has a single root scope. All other scopes are descendant scopes of the root scope. Scopes provide separation between the model and the view, via a mechanism for watching the model for changes. They also provide an event emission/broadcast and subscription facility. See the developer guide on scopes.
$sceDelegate	`$sceDelegate` is a service that is used by the `$sce` service to provide Strict Contextual Escaping (SCE) services to AngularJS.
$sce	`$sce` is a service that provides Strict Contextual Escaping services to AngularJS.
$timeout	Angular's wrapper for `window.setTimeout`. The `fn` function is wrapped into a try/catch block and delegates any exceptions to $exceptionHandler service.
$window	A reference to the browser's `window` object. While `window` is globally available in JavaScript, it causes testability problems, because it is a global variable. In angular we always refer to it through the `$window` service, so it may be overridden, removed or mocked for testing.

Provider

名稱	描述
$animateProvider	Default implementation of $animate that doesn't perform any animations, instead just synchronously performs DOM updates and calls done() callbacks.
$compileProvider
$controllerProvider	The $controller service is used by Angular to create new controllers.
$filterProvider	Filters are just functions which transform input to an output. However filters need to be Dependency Injected. To achieve this a filter definition consists of a factory function which is annotated with dependencies and is responsible for creating a filter function.
$httpProvider	Use `$httpProvider` to change the default behavior of the $http service.
$interpolateProvider	Used for configuring the interpolation markup. Defaults to `{{` and `}}`.
$locationProvider	Use the `$locationProvider` to configure how the application deep linking paths are stored.
$logProvider	Use the `$logProvider` to configure how the application logs messages
$parseProvider	`$parseProvider` can be used for configuring the default behavior of the $parse service.
$rootScopeProvider	Provider for the $rootScope service.
$sceDelegateProvider	The `$sceDelegateProvider` provider allows developers to configure the $sceDelegate service. This allows one to get/set the whitelists and blacklists used to ensure that the URLs used for sourcing Angular templates are safe. Refer $sceDelegateProvider.resourceUrlWhitelist and $sceDelegateProvider.resourceUrlBlacklist
$sceProvider	The $sceProvider provider allows developers to configure the $sce service. enable/disable Strict Contextual Escaping (SCE) in a module override the default implementation with a custom delegate

Input

名稱	描述
input[text]	Standard HTML text input with angular data binding.
input[date]	目前的瀏覽器還不支持HTML5的日期輸入控件,所以將使用文本輸入。在這種情況下，輸入的文本必須符合ISO-8601的日期格式(yyyy-MM-dd)的校驗規(guī)范，例如： `2009-01-06`. 模型必須永遠是一個Date對象。
input[dateTimeLocal]	Input with datetime validation and transformation. In browsers that do not yet support the HTML5 date input, a text element will be used. In that case, the text must be entered in a valid ISO-8601 local datetime format (yyyy-MM-ddTHH:mm), 例如: `2010-12-28T14:57`. 模型必須永遠是一個Date對象。
input[time]	Input with time validation and transformation. In browsers that do not yet support the HTML5 date input, a text element will be used. In that case, the text must be entered in a valid ISO-8601 local time format (HH:mm), 例如: `14:57`. 模型必須是一個Date對象。 This binding will always output a Date object to the model of January 1, 1900, or local date `new Date(0, 0, 1, HH, mm)`.
input[week]	Input with week-of-the-year validation and transformation to Date. In browsers that do not yet support the HTML5 week input, a text element will be used. In that case, the text must be entered in a valid ISO-8601 week format (yyyy-W##), 例如: `2013-W02`. 模型必須永遠是一個Date對象。
input[month]	Input with month validation and transformation. In browsers that do not yet support the HTML5 month input, a text element will be used. In that case, the text must be entered in a valid ISO-8601 month format (yyyy-MM), 例如: `2009-01`. 模型必須永遠是一個Date對象。 In the event the model is not set to the first of the month, the first of that model's month is assumed.
input[number]	Text input with number validation and transformation. Sets the `number` validation error if not a valid number.
input[url]	Text input with URL validation. Sets the `url` validation error key if the content is not a valid URL.
input[email]	Text input with email validation. Sets the `email` validation error key if not a valid email address.
input[radio]	HTML radio button.
input[checkbox]	HTML checkbox.

Filter

名稱	描述
Filter	Selects a subset of items from `array` and returns it as a new array.
currency	Formats a number as a currency (ie $1,234.56). When no currency symbol is provided, default symbol for current locale is used.
number	Formats a number as text.
date	Formats `date` to a string based on the requested `format`.
json	Allows you to convert a JavaScript object into JSON string.
lowercase	Converts string to lowercase.
uppercase	Converts string to uppercase.
limitTo	Creates a new array or string containing only a specified number of elements. The elements are taken from either the beginning or the end of the source array or string, as specified by the value and sign (positive or negative) of `limit`.
orderBy	Orders a specified `array` by the `expression` predicate. It is ordered alphabetically for strings and numerically for numbers. 注意： if you notice numbers are not being sorted correctly, make sure they are actually being saved as numbers and not strings.

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