Bootstrap - Selecting a quantity updates value of ALL the dropdowns

HTML

<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.2/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css">
<div class="row">
            <div class="col">
                <div class="panel panel-default">         
                    <div class="panel-heading">
                        <h1 class="panel-title">Selecting a quantity updates value of ALL the dropdowns</h1>
                    </div>
                    <div class="panel-body">

                        <table class="table table-bordered table-condensed">
                            <thead>
                            <tr>
                                <th>Fruit Type</th>
                                <th>Price</th>
                                <th>Quantity</th>
                            </tr>
                            </thead>
                            <tbody>
                                <tr>
                                    <td>Plum</td>
                                    <td>5</td>
                                    <td>
                                        <div class="btn-group" id ="Child">
                                            <button type="button" class="btn btn-default dropdown-toggle form-control" data-toggle="dropdown">
                                                <span data-bind="label">0</span>&nbsp;<span class="caret"></span>
                                            </button>
                                            <ul class="dropdown-menu">
                                                <li><a id="drpTicketNum" href="#">1</a></li>
                                                <li><a id="drpTicketNum" href="#">2</a></li>
                                                <li><a id="drpTicketNum" href="#">3</a></li>
                                                <li><a id="drpTicketNum" href="#">4</a></li>                                                   
                     ...

JavaScript

$(document).ready(function () {
        $('.dropdown-toggle').dropdown();
    });

 $(".dropdown-menu li a").click(function () {
        var item = $(this).text();   
        var current_row = $(this).parent();
        var current_btn = $(current_row).find(".btn:first-child");

     console.log($(current_row));     
        $(current_btn).text(item);
        $(current_btn).val(item);

     
});