弹框弹出时禁止页面滚动

//弹窗弹出
$(function(){
    $("#cardMeNot").click(function(){
        $("#cardTan").slideDown(500);
        $("body").css({"overflow":"hidden","height":"100%"});
    });
//关闭弹框
    $("#tanClose").click(function(){
        $("#cardTan").slideUp(500);
        $("body").css({"overflow":"auto"});
    });
})


http://blog.163.com/m18201093835_1/blog/static/265923023201712265053888/