页面没有滚动条如何去触发scroll事件

诸如小米手机的展示页面小米手机展示页

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jsvar MouseWheelHandler = function(e) {
      e.preventDefault();
      e = window.event || e;
      //do something here
}
/*
refer to fullpage.js
github: https://github.com/alvarotrigo/fullPage.js
*/
var addMouseWheelHandler = function() {
  document.addEventListener("mousewheel", MouseWheelHandler, false); 
  //IE9, Chrome, Safari, Oper
}
addMouseWheelHandler();

这是参考fullpage.js写的
简单来说就是添加鼠标滚轮滚动事件

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监听mousewhell事件就可以了，小米用的jquery.mousewhell插件