我打算只关注指令 Controller 的使用。因此，请回答与我假设的每个指令使用实例相同的错误，angular 将在指令中提到的 Controller 部分中出现一次。
//module declaration
var app = angular.module('myApp',[]);
//controller declaration
app.controller('myCtrl',function($scope){
$scope.name = "Peter";
});
//app declaration
app.directive('myStudent',function(){
return{
template: "Hi! Dear!! {{name}}<br/>",
controller:function(scope, elem, attr){
console.log("controller");
}
}
});<body ng-app="myApp" ng-controller="myCtrl">
<my-student></my-student>
<my-student></my-student>
<my-student></my-student>
<my-student></my-student>
<my-student></my-student>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.5/angular.min.js"></script>
</body> 注意:
Kindly, throw light on error and on usage of directive controller only. I know same can be done by pre-link, post-link, or compile.
PS:我不明白一些外星天才的否决!
最佳答案
我觉得应该是链接函数而不是 Controller 。
//module declaration
var app = angular.module('myApp', []);
//controller declaration
app.controller('myCtrl', function($scope) {
$scope.name = "Peter";
});
//app declaration
app.directive('myStudent', function() {
return {
template: "Hi! Dear!! {{name}}<br/>",
link: function(scope, elem, attr) {
console.log("controller");
}
}
});<body ng-app="myApp" ng-controller="myCtrl">
<my-student></my-student>
<my-student></my-student>
<my-student></my-student>
<my-student></my-student>
<my-student></my-student>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.5/angular.min.js"></script>
</body>Best Practice: use controller when you want to expose an API to other directives. Otherwise use link.
Controller 接受一个数组:
var app = angular.module('myApp', []);
//controller declaration
app.controller('myCtrl', function($scope) {
$scope.name = "Peter";
});
//app declaration
app.directive('myStudent', function() {
return {
template: "Hi! Dear!! {{name}}<br/>",
controller: [
function(scope, elem, attr) {
console.log("controller");
}
]
}
});<body ng-app="myApp" ng-controller="myCtrl">
<my-student></my-student>
<my-student></my-student>
<my-student></my-student>
<my-student></my-student>
<my-student></my-student>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.5/angular.min.js"></script>
</body>为了进一步阅读，我建议 angular documentation on directives
关于javascript - 指令 Controller 显示错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/41135909/