Leveraging ng-hide in Angular to show or hide elements based on the state

Is there a way to utilize the ng-hide directive based on the value selected in a dropdown menu? Specifically, I am looking to display #additional-option if option C is chosen from the dropdown list.

<div class="form-group">
    <label class="control-label col-md-3">Option:
        <span class="required">
            *
        </span>
    </label>
    <div class="col-md-4">
        <select class="form-control">
            <option selected>A</option>
            <option>B</option>
            <option>C</option>
            <option>D</option>
        </select>
    </div>
</div>  

<!-- Display the following only when C is selected -->
<div class="form-group" id="additional-option">
    <label class="control-label col-md-3"></label>
    <div class="col-md-4">
        <label>
            <div class="checker">
                <span>
                    <input type="checkbox">
                </span>
            </div>
            Additional option
        </label>
    </div>
</div>
javascriptangularjs

Answer №1

To connect the view controls to scope items and verify values in other bindings, link your initial select control to scope like this:

ng-model="formData.selectedLetter"

Then utilize ng-show in the subsequent control to validate the value of the preceding select control.

ng-show="formData.selectedLetter === 'C'"

If necessary, you can also employ ng-hide by negating the condition expression.

This setup ensures that the second control remains visible only if formData.selectedLetter is 'C'.

Answer №2

To create a dynamic binding between your HTML element and AngularJS, simply include the following code:

<select class="form-control" ng-model="selectedOption">

Then, utilize the value of selectedOption in the ng-show directive to determine if a specific div should be hidden:

<div ng-show="selectedOption === 'C'" class="form-group" id="additional-option">

You can access a working example on Plunker here.

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