/***
  created by lee
  目前默认以1200 / 720 为分界线
  需要自行设置html fontSize  100px
  请使用rem em
***/
;
(function(win, doc, undefined) {
  let resizeWid = 'orientationchange' in win ? 'orientationchange' : 'resize',
    reSize = function() {
      let docEle = doc.documentElement,
        docWid = Number(window.innerWidth);
      if (docWid === undefined) return;
      (docWid > 750 & docWid < 1200) ? docEle.style.fontSize = `${docWid / 1200 * 100}px`: false;
      (docWid > 1200) ? docEle.style.fontSize = `100px`: false;
      (docWid < 750) ? docEle.style.fontSize = `${docWid / 750 * 100}px`: false;
    };
  win.addEventListener(resizeWid, reSize, false);
  doc.addEventListener('DOMContentLoaded', reSize, false);
})(window, document);

// ; (function (win, doc, Size, undefined) {
//   let resizeWid = 'orientationchange' in win ? 'orientationchange' : 'resize',
//     reSize = function () {
//       let docEle = doc.documentElement,
//         docWid = Number(window.innerWidth) || document.body.clientWidth;
//       if (docWid === undefined) return;
//       (docWid <= Size) ? docEle.style.fontSize = `${docWid / Size * 100}px` : docEle.style.fontSize = '100px';
//     };
//   win.addEventListener(resizeWid, reSize, false);
//   doc.addEventListener('DOMContentLoaded', reSize, false);
// })(window, document, 1200);

(function(win) {
  let fn = function() {
    win.scrollTo(0, 0);
  }
  win.addEventListener("beforeunload", fn);
})(window);