Bootstrap Snippet Simple input spinner controls using HTML CSS Bootstrap jQuery

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<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
                <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.1.1/css/all.css" integrity="sha384-O8whS3fhG2OnA5Kas0Y9l3cfpmYjapjI0E4theH4iuMD+pLhbf6JI0jIMfYcK3yZ" crossorigin="anonymous">
                 <div class="container mt-5">
                     <div class="row">
                        <div class="col-sm-4"></div>
                        <div class="col-sm-4 col-sm-offset-4">
                            <div class="input-group mb-3">
                                <div class="input-group-prepend">
                                    <button class="btn btn-dark btn-sm" id="minus-btn"><i class="fa fa-minus"></i></button>
                                </div>
                                <input type="number" id="qty_input" class="form-control form-control-sm" value="1" min="1">
                                <div class="input-group-prepend">
                                    <button class="btn btn-dark btn-sm" id="plus-btn"><i class="fa fa-plus"></i></button>
                                </div>
                            </div>
                        </div>
                        <div class="col-sm-4"></div>
                    </div>
                </div>
          
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input { 
    text-align: center; 
}
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    $(document).ready(function(){
    $('#qty_input').prop('disabled', true);
    $('#plus-btn').click(function(){
        $('#qty_input').val(parseInt($('#qty_input').val()) + 1 );
            });
        $('#minus-btn').click(function(){
        $('#qty_input').val(parseInt($('#qty_input').val()) - 1 );
        if ($('#qty_input').val() == 0) {
            $('#qty_input').val(1);
        }
            });
 });
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