"Troubleshooting Error: When accessing a property in AngularJS,

My goal is to retrieve a date value. However, I encounter an error message saying 'Cannot read property 'NTLI' of undefined' whenever the checkbox is unchecked and the date picker is invisible. Strangely enough, everything works fine when the checkbox is checked and the date picker is visible.

<md-checkbox ng-model="user.NTLI" layout="row" ng-disabled="userForm.$invalid">
  NTLI
</md-checkbox>
<div ng-show="user.NTLI">
<fieldset class="standard">
    <legend>NTLI</legend>
    <md-input-container>
        <label>Effective date</label>
        <md-datepicker ng-model="user.effectDateNTLI"></md-datepicker>
    </md-input-container>
</fieldset>
</div>

var effectDate = '';
if ($scope.user.NTLI != undefined) 
{
    effectDate = $scope.user.effectDateNTLI
}
javascriptangularjs

Answer №1

To successfully run the code, it is imperative to define the user variable first.

$scope.user ={};
if ($scope.user.NTLI != undefined) 
{
    efDate = $scope.user.efectiveDateNTLI
}

Answer №2

How can you access the initial value of your customer object? Ensure it is initialized first before accessing it from the $state.

$state.customer = {};

Answer №3

Set the variable user = {} using the attribute ng-init

For example

<div ng-init="user = {}"> 
...
..//some code
...
</div>

There are alternative ways to achieve the same result as well.

Answer №4

When the user is not present, it will display undefined when attempting to access its property. To rectify this issue, simply include the following in your controller:

$scope.user = {};

This action will resolve the problem.

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