How to add plus minus symbol to a bootstrap accordion

Question

I using a bootstrap accordion, where the first panel is always open and the panel which is open gets a class in . I'm checking from my jquery code to see if the class contains class in it highlights that anchor . But currently all the anchor are highlighted.

I just want the first anchor to get highlighted that is open and rest closed panel should have some different style.

here is the fiddle : Fiddle

As you can see all the anchor tags are highlighted. I want first anchor to get some different styling. The whole idea is to add plus / minus symbol to the accordion.

Answer 1

demo https://www.tutorialrepublic.com/codelab.php?topic=bootstrap&file=accordion-with-plus-minus-icon

 $(document).ready(function(){
        // Add minus icon for collapse element which is open by default
        $(".collapse.show").each(function(){
            $(this).prev(".card-header").find(".fa").addClass("fa-minus").removeClass("fa-plus");
        });
        
        // Toggle plus minus icon on show hide of collapse element
        $(".collapse").on('show.bs.collapse', function(){
            $(this).prev(".card-header").find(".fa").removeClass("fa-plus").addClass("fa-minus");
        }).on('hide.bs.collapse', function(){
            $(this).prev(".card-header").find(".fa").removeClass("fa-minus").addClass("fa-plus");
        });
    });

    .bs-example{
        margin: 20px;
    }
    .accordion .fa{
        margin-right: 0.5rem;
    }

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
<style>

</style>


<div class="bs-example">
    <div class="accordion" id="accordionExample">
        <div class="card">
            <div class="card-header" id="headingOne">
                <h2 class="mb-0">
                    <button type="button" class="btn btn-link" data-toggle="collapse" data-target="#collapseOne"><i class="fa fa-plus"></i> What is HTML?</button>                                  
                </h2>
            </div>
            <div id="collapseOne" class="collapse" aria-labelledby="headingOne" data-parent="#accordionExample">
                <div class="card-body">
                    <p>HTML stands for HyperText Markup Language. HTML is the standard markup language for describing the structure of web pages. <a href="https://www.tutorialrepublic.com/html-tutorial/" target="_blank">Learn more.</a></p>
                </div>
            </div>
        </div>
        <div class="card">
            <div class="card-header" id="headingTwo">
                <h2 class="mb-0">
                    <button type="button" class="btn btn-link collapsed" data-toggle="collapse" data-target="#collapseTwo"><i class="fa fa-plus"></i> What is Bootstrap?</button>
                </h2>
            </div>
            <div id="collapseTwo" class="collapse show" aria-labelledby="headingTwo" data-parent="#accordionExample">
                <div class="card-body">
                    <p>Bootstrap is a sleek, intuitive, and powerful front-end framework for faster and easier web development. It is a collection of CSS and HTML conventions. <a href="https://www.tutorialrepublic.com/twitter-bootstrap-tutorial/" target="_blank">Learn more.</a></p>
                </div>
            </div>
        </div>
        <div class="card">
            <div class="card-header" id="headingThree">
                <h2 class="mb-0">
                    <button type="button" class="btn btn-link collapsed" data-toggle="collapse" data-target="#collapseThree"><i class="fa fa-plus"></i> What is CSS?</button>                     
                </h2>
            </div>
            <div id="collapseThree" class="collapse" aria-labelledby="headingThree" data-parent="#accordionExample">
                <div class="card-body">
                    <p>CSS stands for Cascading Style Sheet. CSS allows you to specify various style properties for a given HTML element such as colors, backgrounds, fonts etc. <a href="https://www.tutorialrepublic.com/css-tutorial/" target="_blank">Learn more.</a></p>
                </div>
            </div>
        </div>
    </div>
</div>