jQuery实现单击某个标签改变样式

1、HTML代码，如下图：

<p class="sc_member_recharge_form">

     <span class="selected">20元</span>

     <span >50元</span>

     <span >100元</span>

     <span >200元</span>

     <span >300元</span>

     <span >其它金额</span>

</p>

2、jQuery代码，如下图：

<script>

    $(document).ready(function(){

        $(".sc_member_recharge_form span").click(function(){

            var select = $(this).text();

            if(select === 'other amount' || select === '其它金额'){

                $(".sc_member_recharge_form span").removeClass("selected");

                $(this).addClass("selected");

            }else{

                $(".sc_member_recharge_form span").removeClass("selected");

                $(this).addClass("selected");

            }

        });

    });

</script>