动态显示checkbox选中条数

 <script>
        $('input[type=checkbox]').click(
            function () {
                $('span#cheak_len').empty();
                var len = $("input[name=product_bound_id]:checkbox:checked").length;
                $('span#cheak_len').append(len);
            }
        )
    </script>

<!--全选-->
        <label for="exampleInputEmail2">全选</label>
        <input type="checkbox" class="allAndNotAll">&nbsp;&nbsp;&nbsp;
        共选中<span id="cheak_len">0</span>条

<!-- 单个选框-->
<td><input type="checkbox" value="{{ data.id }}"name="product_bound_id" id="inlineCheckbox1"></td>