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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
Figuren

AngularJS: API: ng/directive/ngSwitch

ngSwitch

  1. - directive in module ng

ngSwitch指令用于根据域表达式在你的模板上按条件切换DOM结构。元素内使用ngSwitch而非ngSwitchWhenngSwitchDefault指令的地方会保留在模板中的位置。

这个指令的工作方法类似于ngInclude,然而,使用下载的模板代码替换(或从模板缓冲中载入),ngSwitch只从嵌套元素中简单选择一个,并让根据将匹配表达式值的元素显示出来。换句话说,你定义一个包含元素 (在你放置指令的地方),放置一个表达式在on="..."属性(或ng-switch="..."属性)上,然后在指令内定义任何内部元素,并放置when属性到每个元素上。when属性用于告诉ngSwitch当表达式计算时显示哪个元素。如果匹配的表达式没在when属性中找到,会显示default属性对应的元素。

注意用于匹配的属性值不能是表达式。他们被解释为字符串值进行匹配。例如, ng-switch-when="someVal"将匹配字符串 "someVal",而不会对应为表达式 $scope.someVal的值。

指令信息

  • 这个指令会创建新的作用域(scope)。
  • 这个指令执行优先级为800.

用法

ng-switch="expression">ng-switch-when="matchValue1">...ng-switch-when="matchValue2">...ng-switch-default>...

动画

enter - 在ngSwitch的内容改变并匹配到内部子元素后发生。

leave - 只在ngSwitch内容改变后并在原内容从DOM移除前发生。

点击这里 了解更多关于涉及动画的步骤。

参数

参数 类型 详述
ngSwitch | on *

用于匹配ng-switch-when的表达式。在子元素可添加:

  • ngSwitchWhen: 状况匹配语句。如果匹配到这个状况就显示。如果一次匹配到多个,那所有匹配到的元素都会显示。
  • ngSwitchDefault: 当没有状况匹配到时的默认状况。如果有多个默认状况,所有都会显示。

示例

index.html
ng-controller="ExampleController">ng-model="selection"ng-options="item for item in items">selection={{selection}}
class="animate-switch-container"ng-switchon="selection">class="animate-switch"ng-switch-when="settings">Settings Div
class="animate-switch"ng-switch-when="home">Home Span
class="animate-switch"ng-switch-default>default
script.js
angular.module('switchExample',['ngAnimate']).controller('ExampleController',['$scope',Function($scope){$scope.items=['settings','home','other'];$scope.selection=$scope.items[0];}]);
animations.css
.animate-switch-container{position:relative;background:white;border:1pxsolid black;height:40px;overflow:hidden;}.animate-switch{padding:10px;}.animate-switch.ng-animate{-webkit-transition:all cubic-bezier(0.250,0.460,0.450,0.940)0.5s;transition:all cubic-bezier(0.250,0.460,0.450,0.940)0.5s;position:absolute;top:0;left:0;right:0;bottom:0;}.animate-switch.ng-leave.ng-leave-active,.animate-switch.ng-enter{top:-50px;}.animate-switch.ng-leave,.animate-switch.ng-enter.ng-enter-active{top:0;}
protractor.js
varswitchElem=element(by.css('[ng-switch]'));varselect=element(by.model('selection'));it('should start in settings',Function(){expect(switchElem.getText()).toMatch(/Settings Div/);});it('should change to home',Function(){select.all(by.css('option')).get(1).click();expect(switchElem.getText()).toMatch(/Home Span/);});it('should select default',Function(){select.all(by.css('option')).get(2).click();expect(switchElem.getText()).toMatch(/default/);});
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