Concealing a form in AngularJS based on a specific value selected in a dropdown menu

Question

Concealing a form in AngularJS based on a specific value selected in a dropdown menu

I need assistance with implementing a specific functionality. If the option value is equal to 1, I want to hide the form below.

<select ng-model="selection">
   <option value="1">1</option>
   <option value="2">2</option>
   <option value="3">3</option>
   <option value="4">4</option>
   <option value="5">5</option>
<select>

<form ng-hide="isHidden"> <!-- Form to be hidden when option value == 1 -->
   <!-- Some html code here... -->
</form>

Below is a snippet of the controller code.

$scope.isHidden = true;

if($scope.selection == '1'){
    $scope.isHidden = false;
}

The current code is not functioning as expected. I would appreciate any help in solving this issue. Thank you.

javascript angularjs

Answer 1

Answer №1

To make the element hidden, you can use the selection in the ng-hide directive:

<div ng-hide="selection == '1'">
   <!-- Place your content here... -->
</div>

Take a look at this live demo for more clarity.

Answer 2

To make the element hidden, you can use the selection in the ng-hide directive:

<div ng-hide="selection == '1'">
   <!-- Place your content here... -->
</div>

Take a look at this live demo for more clarity.

Answer 3

Answer №2

One way to track changes in the selection property is by using a watch method:

$scope.$watch('selection',function(newVal){
    $scope.isHidden = newVal != '1';
});

Answer 4

One way to track changes in the selection property is by using a watch method:

$scope.$watch('selection',function(newVal){
    $scope.isHidden = newVal != '1';
});

Answer 5

Answer №3

To improve the structure and maintainability of your code, it's recommended to handle the change event and move all logic to your JavaScript files. By separating concerns in this way, debugging becomes easier and more efficient. While you could utilize $scope.$watch in the controller for a less intrusive approach, when your logic involves manipulating the UI, it's advisable to include hints in the UI using ng-change for the benefit of other developers. This practice helps prevent scenarios like losing track of the form's behavior and spending hours searching for the cause.

Take a look at the HTML snippet below:

<form name="myForm">
    <select ng-model="selection" ng-change="handleSelectionChange()">
        <option value="1">1</option>
        <option value="2">2</option>
        <option value="3">3</option>
        <option value="4">4</option>
        <option value="5">5</option>
    <select>
</form>

For the controller part:

$scope.handleSelectionChange = function(){
    if($scope.selection=='1'){
        document.myForm.style.display = 'none';
    }
};`

Since I can't test the code functionality on my mobile device, consider this concept as a starting point. I'll verify and refine the code once I have access to my desktop.

Answer 6

To improve the structure and maintainability of your code, it's recommended to handle the change event and move all logic to your JavaScript files. By separating concerns in this way, debugging becomes easier and more efficient. While you could utilize $scope.$watch in the controller for a less intrusive approach, when your logic involves manipulating the UI, it's advisable to include hints in the UI using ng-change for the benefit of other developers. This practice helps prevent scenarios like losing track of the form's behavior and spending hours searching for the cause.

Take a look at the HTML snippet below:

<form name="myForm">
    <select ng-model="selection" ng-change="handleSelectionChange()">
        <option value="1">1</option>
        <option value="2">2</option>
        <option value="3">3</option>
        <option value="4">4</option>
        <option value="5">5</option>
    <select>
</form>

For the controller part:

$scope.handleSelectionChange = function(){
    if($scope.selection=='1'){
        document.myForm.style.display = 'none';
    }
};`

Since I can't test the code functionality on my mobile device, consider this concept as a starting point. I'll verify and refine the code once I have access to my desktop.

Concealing a form in AngularJS based on a specific value selected in a dropdown menu

Answer №1

Answer №2

Answer №3

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