谁能告诉我如何在另一个angularJS指令中包含一个指令的控制器.例如,我有以下代码
var app = angular.module('shop', []).
config(['$routeProvider', function ($routeProvider) {
$routeProvider.when('/', {
templateUrl: '/js/partials/home.html'
})
.when('/products', {
controller: 'ProductsController',
templateUrl: '/js/partials/products.html'
})
.when('/products/:productId', {
controller: 'ProductController',
templateUrl: '/js/partials/product.html'
});
}]);
app.directive('mainCtrl', function () {
return {
controller: function ($scope) {}
};
});
app.directive('addProduct', function () {
return {
restrict: 'C',
require: '^mainCtrl',
link: function (scope, lElement, attrs, mainCtrl) {
//console.log(cartController);
}
};
});
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从各方面来说,我应该能够在addProduct指令中访问控制器,但事实并非如此.有没有更好的方法呢?
我正在尝试ng-click使用自定义angularjs指令设置确认对话框:
app.directive('ngConfirmClick', [
function(){
return {
priority: 1,
terminal: true,
link: function (scope, element, attr) {
var msg = attr.ngConfirmClick || "Are you sure?";
var clickAction = attr.ngClick;
element.bind('click',function (event) {
if ( window.confirm(msg) ) {
scope.$eval(clickAction)
}
});
}
};
}])
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这很好但很遗憾,使用我的指令在标记内的表达式不会被评估:
<button ng-click="sayHi()" ng-confirm-click="Would you like to say hi?">Say hi to {{ name }}</button>
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(这种情况下不评估名称).这似乎是由于我的指令的终端参数.你对解决方法有什么想法吗?
测试我的代码:http: //plnkr.co/edit/EHmRpfwsgSfEFVMgRLgj?p = preview
我正在尝试在请求繁忙时显示或隐藏按钮上的加载指示器.我通过在加载请求或加载完成时更改$ scope.loading变量来使用angular.
$scope.login = function(){
$scope.loading = true;
apiFactory.getToken()
.success(function(data){
})
.error(function(error){
})
.finally(function(){
$timeout(function() {
$scope.loading = false;
}, 0);
});
};
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在前端:
<button ng-disabled="loading" class="button button-outline button-positive" type="submit">
Log in
<span ng-if="loading" class="ion-refreshing"></span>
</button>
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这工作正常,但加载图标(离子刷新)显示约2秒,而$ scope变量立即更新.我尝试了$ scope.$ apply但这似乎不是什么错误,范围在请求后立即更新.这只是图标没有足够快速响应.
谢谢你帮我理解这个!
我在AngularJS中使用ngChange来触发一个自定义函数,该函数将删除用户添加到输入的任何字母.
<input type="text" name="inputName" data-ng-change="numbersOnly()"/>
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问题是我需要定位触发的输入,numbersOnly()以便我可以删除输入的字母.我在Google上看了很长时间,并且无法找到任何与此有关的内容.
我能做什么?
在AngularJS中单元测试隔离范围的好方法是什么
指令片段
scope: {name: '=myGreet'},
link: function (scope, element, attrs) {
//show the initial state
greet(element, scope[attrs.myGreet]);
//listen for changes in the model
scope.$watch(attrs.myGreet, function (name) {
greet(element, name);
});
}
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我想,以确保指令监听的变化-这并不会与一个孤立的范围内工作:
it('should watch for changes in the model', function () {
var elm;
//arrange
spyOn(scope, '$watch');
//act
elm = compile(validHTML)(scope);
//assert
expect(scope.$watch.callCount).toBe(1);
expect(scope.$watch).toHaveBeenCalledWith('name', jasmine.any(Function));
});
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更新: 我通过检查预期观察者是否被添加到子范围来实现它,但它非常脆弱,并且可能以未记录的方式使用访问者(也可能更改,恕不另行通知!).
//this is super brittle, is there a better way!?
elm = compile(validHTML)(scope);
expect(elm.scope().$$watchers[0].exp).toBe('name');
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更新2:
正如我所说,这很脆弱!这个想法仍然有效,但在较新版本的AngularJS中,访问者已经从以下scope()变为isolateScope(): …
javascript unit-testing jasmine angularjs angularjs-directive
在本文档中:http://docs.angularjs.org/guide/directive,它表示有一个replace指令配置:
template - 将当前元素替换为HTML的内容.替换过程将所有属性/类从旧元素迁移到新元素.有关更多信息,请参阅下面的创建组件部分.
javascript代码
app.directive('myd1', function(){
return {
template: '<span>directive template1</span>',
replace: true
}
});
app.directive('myd2', function(){
return {
template: '<span>directive template2</span>',
replace: false
}
});
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HTML代码
<div myd1>
original content should be replaced
</div>
<div myd2>
original content should NOT be replaced
</div>
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但最后一页看起来像:
directive template1
directive template2
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看来这replace不起作用.我想念什么吗?
对于隔离范围,指令的模板似乎无法访问控制器('Ctrl')$ rootScope变量,但该变量确实出现在指令的控制器中.我理解为什么控制器('Ctrl')$ scope变量在隔离范围内不可见.
HTML:
<div ng-app="app">
<div ng-controller="Ctrl">
<my-template></my-template>
</div>
<script type="text/ng-template" id="my-template.html">
<label ng-click="test(blah)">Click</label>
</script>
</div>
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JavaScript的:
angular.module('app', [])
.controller('Ctrl', function Ctrl1($scope, $rootScope) {
$rootScope.blah = 'Hello';
$scope.yah = 'World'
})
.directive('myTemplate', function() {
return {
restrict: 'E',
templateUrl: 'my-template.html',
scope: {},
controller: ["$scope", "$rootScope", function($scope, $rootScope) {
console.log($rootScope.blah);
console.log($scope.yah);,
$scope.test = function(arg) {
console.log(arg);
}
}]
};
});
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访问变量时没有隔离范围 - 通过注释隔离范围行可以看出:
// scope: {},
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这是外部ng重复
<div data-courseoverview data-ng-repeat="course in courses | orderBy:sortOrder | filter:search"
data-ng-controller ="CourseItemController"
data-ng-class="{ selected: isSelected }">
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下面是使用另一个指令的内部ng-repeat
<li data-ng-repeat="item in social" class="social-{{item.name}}" ng-mouseover="hoverItem(true);"
ng-mouseout="hoverItem(false);"
index="{{$index}}"><i class="{{item.icon}}"
box="course-{{$index}}"></i></li>
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这是指令我正在调用悬停事件
ecourseApp.directive("courseoverview", function() {
return {
restrict : 'A',
replace: true,
/*scope: {
index: '@'
},*/
transclude: true,
templateUrl: "views/course-overview.html",
link: function link(scope, element, attrs) {
scope.switched = false;
//hover handler
scope.hoverItem = function(hovered){
if (hovered) {
element.addClass('hover');
$('#course-0 figure').addClass('tint')
}
else
element.removeClass('hover');
};
}
}});
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这需要 $('#course-0 figure').addClass('tint')更改调用项.
谢谢
我正试图通过使用角度将背景图像应用于div ng-style(我之前尝试过使用相同行为的自定义指令),但它似乎不起作用.
<nav
class="navigation-grid-container"
data-ng-class="{ bigger: isNavActive == true }"
data-ng-controller="NavigationCtrl"
data-ng-mouseenter="isNavActive = true; $parent.isNavActive = true"
data-ng-mouseleave="isNavActive = false; $parent.isNavActive = false"
data-ng-show="$parent.navInvisible == false"
data-ng-animate="'fade'"
ng-cloak>
<ul class="navigation-container unstyled clearfix">
<li
class="navigation-item-container"
data-ng-repeat="(key, item) in navigation"
data-ng-class="{ small: $parent.isNavActive, big: isActive == true }"
data-ng-mouseenter="isActive = true; isInactive= false"
data-ng-mouseleave="isActive = false; isInactive= true">
<div data-ng-switch on="item.id">
<div class="navigation-item-default" data-ng-switch-when="scandinavia">
<a class="navigation-item-overlay" data-ng-href="{{item.id}}">
<div class="navigation-item-teaser">
<span class="navigation-item-teaser-text" data-ng-class="{ small: isScandinavia }">{{item.teaser}}</span>
</div>
</a>
<span class="navigation-item-background" data-ng-style="{ 'background-image': …Run Code Online (Sandbox Code Playgroud) javascript angularjs angularjs-directive angularjs-ng-repeat ng-style
我一直在将自定义指令升级到新的组件架构.我读过组件不支持观察者.它是否正确?如果是这样,您如何检测对象的更改?对于一个基本的例子,我有自定义组件myBox,它有一个带有游戏绑定的子组件游戏.如果游戏组件中有更改游戏,我如何在myBox中显示警告消息?我明白有rxJS方法是否有可能纯粹在棱角分明?我的JSFiddle
JavaScript的
var app = angular.module('myApp', []);
app.controller('mainCtrl', function($scope) {
$scope.name = "Tony Danza";
});
app.component("myBox", {
bindings: {},
controller: function($element) {
var myBox = this;
myBox.game = 'World Of warcraft';
//IF myBox.game changes, show alert message 'NAME CHANGE'
},
controllerAs: 'myBox',
templateUrl: "/template",
transclude: true
})
app.component("game", {
bindings: {game:'='},
controller: function($element) {
var game = this;
},
controllerAs: 'game',
templateUrl: "/template2"
})
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HTML
<div ng-app="myApp" ng-controller="mainCtrl">
<script type="text/ng-template" id="/template">
<div style='width:40%;border:2px solid black;background-color:yellow'> …Run Code Online (Sandbox Code Playgroud) angularjs angularjs-directive angularjs-scope angularjs-components angularjs-1.5