Angularjs angular isundefined function

AngularJS does not provide a built-in angular.isUndefined() function, but you can easily create your own utility function to check if a variable is undefined or not.

Here's an example of how to create an isUndefined() utility function in AngularJS:

angular.module('myApp', [])
  .controller('myController', function($scope) {
    var myVariable;

    if (isUndefined(myVariable)) {
      console.log('The variable is undefined!');
    } else {
      console.log('The variable is defined!');
    }

    function isUndefined(value) {
      return typeof value === 'undefined';
    }
  });

In this example, we define a myVariable variable that is not assigned a value. We then use the isUndefined() utility function to check if the variable is undefined or not. Since myVariable is undefined, the function returns true, and we log a message to the console indicating that the variable is undefined.

The isUndefined() function works by checking the typeof the value passed as an argument. If the value is undefined, then the function returns true, indicating that the value is undefined. If the value is not undefined, then the function returns false, indicating that the value is defined.

You can use this isUndefined() function in your AngularJS application to check if variables are undefined before attempting to use them. This can help prevent errors in your application.