以下代码实现判断页面的滚动条的滚动方向: var sign = 80;//定义默认的向上滚与向下滚的边界 window.onscroll = window.onresize = function(){ var oScrollTop=$(window).scrollTop(); if ( oScrollTop > 80) { //write your code } if ( oScrollTop < 80) { //write your code } if ( oScrollTop > s
1>全局控制 //向上滑动显示 var initTop = 0; var i = 1; $(window).scroll(function(){ var scrollTop = $(document).scrollTop(); if(scrollTop < initTop){ var top = document.documentElement.scrollTop + document.body.scrollTop; if(top == 0){ i++; showMessage(i,'load