移动端开发：onchick延迟0.3秒多次点击重复提交问题

<a>和chick换成ontouchend

$(function(){
        //兑换链接
        $("#duihuan li").unbind().click(
            function() {
                window.location.href=$(this).attr("href");    
            }
        );
        
        $("#signIn").unbind().bind("touchend",function(){
            $(this).unbind();
            window.location.href = "${pageContext.request.contextPath}/integralParadise/signIn";
            return false;
        });
    });

<a id="signIn" href="javascript:;">
                        <p class="mim_i"><img src="${pageContext.request.contextPath}/images/m_a.png" /></p>
                        <p class="mim_t">签到</p>
                    </a>