Utilizing selected Bootstrap dropdown option for extracting value

I'm currently learning about development and am trying to create a bootstrap dropdown with 3 different background image options. My goal is to change the background based on the selected option from the dropdown. However, I am struggling to figure out how to retrieve the value of the selected option. Despite extensive searching, including the bootstrap documentation, I haven't been able to find a clear solution.

So far, the dropdown displays correctly...

<div class="dropdown open">
          <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
            Background
          </button>
          <div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
            <a class="dropdown-item" href="#">Image 1</a>
            <a class="dropdown-item" href="#">Image 2</a>
            <a class="dropdown-item" href="#">Image 3</a>
          </div>
        </div>

...but I am facing difficulties moving forward...

$('#dropdownMenuButton').on('hidden.bs.dropdown', function () {
  // Need to extract the selected option value and change the background
})

I am able to change the background, but retrieving the value of the selected option remains a challenge.

It seems like there must be a simpler solution that I am missing. Can someone please offer some guidance?

Thank you,

LB

jquerycsstwitter-bootstrap

Answer №1

When a user clicks on an item, this code snippet will log the text value of the clicked item. It's important to note that the element being clicked on is not a select element.

$('.dropdown-item').click(function() {
  console.log( $(this).text() );
});

Answer №2

Instead of using the "hidden.bs.dropdown" event, you can opt to listen for the click event on the individual "dropdown-item":

$('#dropdownMenuButton + [aria-labelledby="dropdownMenuButton"] a').on('click', function (e) {
  e.preventDefault();
  // Capture the selected option and change the background
  var element = this;
  console.log(element.textContent);
})
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://code.jquery.com/jquery-2.1.1.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>


<div class="dropdown open">
    <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
        Background
    </button>
    <div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
        <a class="dropdown-item" href="#">Image 1</a>
        <a class="dropdown-item" href="#">Image 2</a>
        <a class="dropdown-item" href="#">Image 3</a>
    </div>
</div>

Answer №3

Here is an alternative method to consider:

<div id="mydd" class="dropdown open">
          <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
            Background
          </button>
          <div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
            <a class="dropdown-item" href="#">Image 1</a>
            <a class="dropdown-item" href="#">Image 2</a>
            <a class="dropdown-item" href="#">Image 3</a>
          </div>
        </div>

Next, utilize the following code snippet:

$('#mydd').on('hide.bs.dropdown', function () {
        var selected = $('.dropdown-item:active');
        // extract information from the selected item and proceed
 ...etc...
});

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