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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
personnages

AngularJS: API: ng/directive/ngApp

ngApp

  1. - directive in module ng

使用這個指令自動載入啟動一個AngularJS應(yīng)用。 ngApp 指令設(shè)計為應(yīng)用的根元素，一般把它放在頁面的根元素附近，例如<body>或<html>標(biāo)簽。

每個HTML文檔只有一個AngularJS應(yīng)用能被自動載入啟動。文檔中找到的第一個ngApp將被用于定義自動載入啟動的應(yīng)用的根元素。要在一個HTML文檔中運行多個應(yīng)用，你必須使用angular.bootstrap來手工啟動。AngularJS應(yīng)用間不能嵌套。

你能指定一個 AngularJS module 作為應(yīng)用的根模塊。當(dāng)應(yīng)用被啟動后，這個模塊將被載入到$injector，并且應(yīng)包含所需要的應(yīng)用代碼或必須依賴的包含代碼的其它模塊。 參考 angular.modul獲取更多信息。

在下面的例子中，如果 ngApp 指令沒被放在 html 元素上，文檔將不會被編譯， AppController 將不會被實例化，并且 {{ a+b }} 將不會被解析為 3。

使用ngApp 是簡單、通用的啟動應(yīng)用的途徑。

index.html
<div ng-controller="ngAppDemoController">
I can add: {{a}} + {} =  {{ a+b }}
</div>
script.js
angular.module('ngAppDemo', []).controller('ngAppDemoController', Function($scope) {
$scope.a = 1;
$scope.b = 2;});
使用 ngStrictDi，你會看到這樣的效果：

index.html 
<div ng-app="ngAppStrictDemo" ng-strict-di>
<div ng-controller="GoodController1">
    I can add: {{a}} + {} =  {{ a+b }}

    <p>This renders because the controller does not fail to
       instantiate, by using explicit annotation style (see
       script.js for details)
    </p>
</div>

<div ng-controller="GoodController2">
    Name: <input ng-model="name"><br />
    Hello, {{name}}!

    <p>This renders because the controller does not fail to
       instantiate, by using explicit annotation style
       (see script.js for details)
    </p>
</div>

<div ng-controller="BadController">
    I can add: {{a}} + {} =  {{ a+b }}

    <p>The controller could not be instantiated, due to relying
       on automatic function annotations (which are disabled in
       strict mode). As such, the content of this section is not
       interpolated, and there should be an error in your web console.
    </p>
</div>
</div>
script.js 
angular.module('ngAppStrictDemo', [])
// BadController will fail to instantiate, due to relying on automatic function annotation,
// rather than an explicit annotation
.controller('BadController', Function($scope) {
  $scope.a = 1;
  $scope.b = 2;})
// Unlike BadController, GoodController1 and GoodController2 will not fail to be instantiated,
// due to using explicit annotations using the array style and $inject property, respectively.
.controller('GoodController1', ['$scope', Function($scope) {
  $scope.a = 1;
  $scope.b = 2;}])
.controller('GoodController2', GoodController2);
Function GoodController2($scope) {
  $scope.name= "World";}
GoodController2.$inject = ['$scope'];
style.css
div[ng-controller] {
margin-bottom: 1em;-webkit-border-radius: 4px;
border-radius: 4px;
border: 1px solid;
padding: .5em;}
div[ng-controller^=Good] {
border-color: #d6e9c6;
background-color: #dff0d8;
color: #3c763d;}
div[ng-controller^=Bad] {
border-color: #ebccd1;
background-color: #f2dede;
color: #a94442;
margin-bottom: 0;}

指令信息

  • 這個指令執(zhí)行優(yōu)先級為0.

用法

  • 作為屬性使用: 
    <ANY
  ng-app=""
  [ng-strict-di=""]>
...
</ANY>

參數(shù)

參數(shù) 類型 詳述
ngApp angular.Module

用于載入的可選的應(yīng)用 module 名稱。
ngStrictDi
(可選)
 boolean

如果在app元素上設(shè)置這個屬性， 注入器將使用 "strict-di" 模式創(chuàng)建。意思是，應(yīng)用將調(diào)用函數(shù)失敗在沒有使用明確的函數(shù)標(biāo)注時 (并且因此不適合于JavaScript壓縮), 在 依賴注入指南中，一些有用的調(diào)試信息將有助于追蹤這些錯誤的根源。
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