Strategies for detecting when the focus has moved away from a Div

Question

Strategies for detecting when the focus has moved away from a Div

I'm currently developing a dynamic form that generates multiple Divs. My goal is to detect when the focus is lost from an entire div, not just from one input field.

https://i.sstatic.net/YopGs.png

As shown in the image, I have several identical forms and the challenge lies in identifying when a user finishes editing one of the forms.

These forms are dynamically created using an ng-repeat directive.

<fieldset data-ng-repeat="response in responces" ng-init="sectionIndex = $index">
    <div id="customFrom">
    <input type="text" ng-model="response.code" name="" placeholder="Code">
    <input type="text" ng-model="response.rank" name="" placeholder="{{ 'app.forms.responses.rank' | translate }}">
    <input type="text" ng-model="response.value" name="" placeholder="{{ 'app.forms.responses.value' | translate }}">
    <input type="text" ng-model="response.name" name="" placeholder="{{ 'app.forms.createQuiz.fields.name' | translate }}" class="labelTextQuestionCreation">
    <button class="remove"  ng-click="removeResponse($index)" ng-show="deteteResponceOption">-</button>
    </div>
</fieldset>

What's the best approach to trigger an action when a user switches from one form to another? I need to detect when a form (Div) loses focus in order to execute a specific function. Thank you.

javascript angularjs onblur

Answer 1

Answer №1

After carefully considering your issue, it appears that utilizing ng-model-options is the most effective solution.

For each element with ng-model, include the following attribute:

ng-model-options="{ updateOn: 'blur' }"

This will result in the following code snippet:

<input type="text" ng-model="response.code" name="" ng-model-options="{ updateOn: 'blur' }" placeholder="Code">

By implementing ng-model-options, the model will only be updated when focus is lost on the form field. You can then utilize a $watch statement to monitor any changes to the model.

Within the $watch callback function, you can detect modifications to any attributes of the main array and perform validation to ensure all data is complete before proceeding with your desired functionality.

$scope.$watch('responces', function (newVal, oldVal) {
    // Validation logic for input fields
}, true);

Answer 2

After carefully considering your issue, it appears that utilizing ng-model-options is the most effective solution.

For each element with ng-model, include the following attribute:

ng-model-options="{ updateOn: 'blur' }"

This will result in the following code snippet:

<input type="text" ng-model="response.code" name="" ng-model-options="{ updateOn: 'blur' }" placeholder="Code">

By implementing ng-model-options, the model will only be updated when focus is lost on the form field. You can then utilize a $watch statement to monitor any changes to the model.

Within the $watch callback function, you can detect modifications to any attributes of the main array and perform validation to ensure all data is complete before proceeding with your desired functionality.

$scope.$watch('responces', function (newVal, oldVal) {
    // Validation logic for input fields
}, true);

Answer 3

Answer №2

One way I solved the issue was by incorporating a hidden input that specifies the form's index. The value of this input is added to the model since I am using ng-repeat and each row has its own scope. Additionally, I utilized the ng-focus directive to check for focus on an input field. Upon focus, a function named `getSelectedElement(index)` is called. This function checks if the index has changed and updates/inserts the row in the database accordingly. Below is the code snippet for the solution:

HTML

<fieldset  data-ng-repeat="response in responces track by $index" ng-init="sectionIndex = $index">
    <div ng-model-options="{ updateOn: 'blur' }">
    <input type="text" ng-model="response.code" name="" placeholder="Code" ng-focus="getSelectedElement(sectionIndex)">
    <input type="text" ng-model="response.index" ng-init="response.index=sectionIndex" ng-value="sectionIndex" ng-focus="getSelectedElement(sectionIndex)" ng-show="false">
    <input type="text" ng-model="response.rank" name="" placeholder="{{ 'app.forms.responses.rank' | translate }}" ng-focus="getSelectedElement(sectionIndex)">
    <input type="text" ng-model="response.value" name="" placeholder="{{ 'app.forms.responses.value' | translate }}" ng-focus="getSelectedElement(sectionIndex)">
    <input type="text" ng-model="response.name" name="" placeholder="{{ 'app.forms.createQuiz.fields.name' | translate }}" class="labelTextQuestionCreation" ng-focus="getSelectedElement(sectionIndex)">
    <button class="remove" ng-click="removeResponse($index)" ng-show="deteteResponceOption">-</button>
    </div>
</fieldset>

JavaScript

$scope.getSelectedElement=function(index){
 var oldIndex=$scope.responcesSelectedIndex;
 if(oldIndex==-1){
     oldIndex=index;
 }
 $scope.responcesSelectedIndex=index;
 var newIndex=$scope.responcesSelectedIndex;
     if(oldIndex!=newIndex){
        console.log("Update or Create");
        //Perform necessary actions here
    }
}

While not flawless, this approach gets the job done effectively.

Answer 4

One way I solved the issue was by incorporating a hidden input that specifies the form's index. The value of this input is added to the model since I am using ng-repeat and each row has its own scope. Additionally, I utilized the ng-focus directive to check for focus on an input field. Upon focus, a function named `getSelectedElement(index)` is called. This function checks if the index has changed and updates/inserts the row in the database accordingly. Below is the code snippet for the solution:

HTML

<fieldset  data-ng-repeat="response in responces track by $index" ng-init="sectionIndex = $index">
    <div ng-model-options="{ updateOn: 'blur' }">
    <input type="text" ng-model="response.code" name="" placeholder="Code" ng-focus="getSelectedElement(sectionIndex)">
    <input type="text" ng-model="response.index" ng-init="response.index=sectionIndex" ng-value="sectionIndex" ng-focus="getSelectedElement(sectionIndex)" ng-show="false">
    <input type="text" ng-model="response.rank" name="" placeholder="{{ 'app.forms.responses.rank' | translate }}" ng-focus="getSelectedElement(sectionIndex)">
    <input type="text" ng-model="response.value" name="" placeholder="{{ 'app.forms.responses.value' | translate }}" ng-focus="getSelectedElement(sectionIndex)">
    <input type="text" ng-model="response.name" name="" placeholder="{{ 'app.forms.createQuiz.fields.name' | translate }}" class="labelTextQuestionCreation" ng-focus="getSelectedElement(sectionIndex)">
    <button class="remove" ng-click="removeResponse($index)" ng-show="deteteResponceOption">-</button>
    </div>
</fieldset>

JavaScript

$scope.getSelectedElement=function(index){
 var oldIndex=$scope.responcesSelectedIndex;
 if(oldIndex==-1){
     oldIndex=index;
 }
 $scope.responcesSelectedIndex=index;
 var newIndex=$scope.responcesSelectedIndex;
     if(oldIndex!=newIndex){
        console.log("Update or Create");
        //Perform necessary actions here
    }
}

While not flawless, this approach gets the job done effectively.

Strategies for detecting when the focus has moved away from a Div

Answer №1

Answer №2

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