read ng-init data from controller
Question
I am new to angularJS, I want to access ng-init data from contoller but always return undefined, here my code
HTML
<div class="row" ng-controller="IFuseController" ng-init="myText='Hello World!'">
....
</div>
Angular controller
uniqcApp.controller('IFuseController', function (IFuseService, $scope) {
console.log("Cingda " + $scope.myText); //return undefined
});
any idea?
3 answers
solution1
2 2018-02-07 04:04:37
This happens because your controller gets called on load, and that time you don't have value set for the variable myText .
You need to trigger an event once the text is loaded.
DEMO
var uniqcApp = angular.module('uniqueApp',[]); uniqcApp.controller('IFuseController', function ($scope){ $scope.read = function(){ console.log("Cingda " + $scope.myText); }; });
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script> <body ng-app="uniqueApp"> <div class="row" ng-controller="IFuseController" ng-init="myText='Hello World!'"> <button ng-click="read()">Read initial value</button> </div> </body>
solution2
0 2018-02-07 05:56:28
You can force to bind ng-init result to $scope :
var uniqcApp = angular.module('uniqueApp', []); uniqcApp.controller('IFuseController', function($scope) { var el = angular.element(document.querySelector('[ng-controller=IFuseController]')); var attr = el[0].getAttribute('ng-init'); $scope.$eval(attr); console.log("Cingda " + $scope.myText); });
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"> </script> <body ng-app="uniqueApp"> <div class="row" ng-controller="IFuseController" ng-init="myText='Hello World!'"> </div> </body>
solution3
0 2018-02-08 04:38:01
Why dont you init data on controller side ? If you still want to do that , you can use $watch
$scope.$watch('myText',function(newVal){
alert(newVal);
})
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