摘要: // 判断鼠标滚动方向 function wheelDirection(fn) { var beforeScrollTop = $(window).scrollTop(); var fn = fn || function(){}; $(window).on('scroll',function(){ var afterScrollTop = $(window... 阅读全文
posted @ 2017-02-27 10:58 无情码字员 阅读(294) 评论(0) 推荐(0) 编辑