为什么 ng-init 中设置的变量在 AngularJS 的 $scope 中未定义? [英] Why is the variable set in ng-init undefined in $scope in AngularJS?

问题描述

我在视图中使用 ng-init 设置了一个变量，然后我试图在我的控制器中访问它.然而，当我尝试访问它时，我得到一个 undefined.

相关代码:

我的观点:

<div ng-init="pageTitle = '小猫'">

我的控制器:

var MyCtrl;MyCtrl = 函数($scope){返回 console.log($scope.pageTitle);};

JSFiddle

我在这里遗漏了什么?

解决方案

等待变量初始化.

$scope.$watch('pageTitle', function () {console.log($scope.pageTitle);});

I have a variable I'm setting in my view with ng-init which I am then trying to access in my controller. When I try to access it however, I'm getting an undefined.

Relevant pieces of code:

My view:

<div ng-controller="MyCtrl">
  <div ng-init="pageTitle = 'kittens'">
  </div>
</div>

My controller:

var MyCtrl;

MyCtrl = function($scope) {
  return console.log($scope.pageTitle);
};

JSFiddle

What am I missing here?

解决方案

Wait until the variable is init.

$scope.$watch('pageTitle', function () {
    console.log($scope.pageTitle); 
});

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