判断鼠标上滚还是下滚

keitch

于 2019-08-12 14:26:31 发布

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分类专栏： js

本文链接：https://blog.youkuaiyun.com/weixin_43074024/article/details/99300605

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var t = 0;
var sTop = 0;
$(window).bind('scroll',function () {
    sTop = $(window).scrollTop();
    if (sTop > 400) {
        $('.header_pr').css('transform','translateY(-46px) translateX(0)');
        $('.search_tav_main').css('transform','translateY(-46px) translateX(0)');
        $('.search_checkbox').css('transform','translateY(-46px) translateX(0)');
    }
    if(t >= sTop){ //下滚
        $('.header_pr').css('transform','translateY(0) translateX(0)');
        $('.search_tav_main').css('transform','translateY(0) translateX(0)');
        $('.search_checkbox').css('transform','translateY(0) translateX(0)');
    }else if(t < sTop){ //上滚
    		
    }
    setTimeout(function(){t = sTop;},0);
});