ng-init最初没有获取范围值

Question

I am calling a function on ng-init . this function takes the values from the scope. Actually what happening is we load a page and on page load we use ng-init

<div ng-init="somefunction(c,d)">
</div>

$scope.somefunction = function() {
  console.log($scope.a);
}

$scope.abc = function() {
  //calling another function 
  $scope.xyz();
}
$scope.xyz = function() {
  $scope.a = "hello";
}
$scope.abc();//called on controller load

But I am not getting a in console means getting undefined . But after clicking on any button on page or some stuff. I got a . Means I am not getting this on page load.

Answer 1

You have to call it as

<div ng-init="somefunction()">
</div>

Besides that there are chances that you might get undefined if ng-init is called before $scope.abc()

Answer 2

Make sure the scripts are loaded before the javascript functions. Otherwise you would get the values to be undefined.

 <script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.7.5/angular.min.js"></script> <div ng-app="myApp" ng-controller="myCtrl"> <div ng-init="somefunction()"> </div> </div> <script> var app = angular.module('myApp', []); app.controller('myCtrl', function($scope) { $scope.somefunction = function() { $scope.abc(); console.log($scope.a); } $scope.abc = function() { //calling another function $scope.xyz(); } $scope.xyz = function() { $scope.a = "hello"; } }); </script> 

Answer 3

Instead of using ng-init, you can directly call function in controller. Something Like this :

<div></div>
$scope.a = '';
$scope.somefunction = function() {
  console.log($scope.a);
}

$scope.abc = function() {
  //calling another function 
  $scope.xyz();
}
$scope.xyz = function() {
  $scope.a = "hello";
}
$scope.abc();//called on controller load
$scope.somefunction();

It will simplify the process as it will execute only when everything is loaded and defined.