AngularJS 指令scope作用域问题，$apply

项目中发现了一个很奇怪的问题，怎一个郁闷了的....

问题如下

controller中定义了一个变量，$scope.test = "123";

接着定义一个指令，触发事件改变$scope.test = “666666” 此时，$scope.test可以成功修改，输出666666

然后定义了一个$scope.gotest = function(){}函数输出$scope.test，可是，可是，可是...输出结果却是123，我就郁闷了...

代码如下

1、html

<ion-view>
<ion-content>
<div class="button-bar">
<div class="bgstyle" change-element>First</div>
</div>
{{test}}
<a ng-click="gotest()">go</a>
</ion-content>
</ion-view>
<style>
.bgstyle{background-color:#8f8f8f;width:100%;height:30px;margin:2px 0 2px 0;text-align:center}
</style>

2、controller

appControllers.controller("ScopeabcCtrl", function ($scope,$rootScope) {
$scope.test = "123";

$scope.gotest = function(){
console.log($scope.test);
}
})

3、directive

appDirectives.directive("changeElement", function () {
return {
scope: false,
link: function (scope, elements) {
elements[0].onclick = function () {
scope.test = "666666";
};
}
};
});

后续...

请教大神之后，发现其实问题是可以解决的，加上scope.$apply(function () {});问题就可以搞定了，代码如下

appDirectives.directive("changeElement", function () {
return {
scope:false,
replace: true,
link: function (scope, elements) {
elements[0].onclick = function () {
scope.$apply(function () {
　　         scope.test = "666666";
});
};
}
};
});

或者

appDirectives.directive("changeElement", function () {
return {
scope:false,
replace: true,
link: function (scope, elements) {
elements[0].onclick = function () {
　　       scope.test = "666666";
scope.$digest();//这个换成$apply即可
};
}
};
});

$apply回传绑定

$scope.getMessage = function () {
setTimeout(function () {
$scope.$apply(function () {
//wrapped this within $apply
$scope.message = 'Hello World';
console.log('message:' + $scope.message);
});
}, 2000);
}