Adapter mobile

gistfile1.txt

  <script>
    (function (doc, win) {
      var docEl = doc.documentElement,
          resizeEvt = 'orientationchange' in window ? 'orientationchange' : 'resize',
          recalc = function () {
              var clientWidth = docEl.clientWidth;
              if (!clientWidth) return;
              if (clientWidth >= 750) {
                  docEl.style.fontSize = '100px';
              } else {
                  docEl.style.fontSize = 100 * (clientWidth / 750) + 'px';
              }
              var html = document.getElementsByTagName('html')[0];
              var settedFs = settingFs = parseInt(100 * (clientWidth / 750));
              var whileCount = 0;
              while (true) {
                  var realFs = parseInt(window.getComputedStyle(html).fontSize);
                  var delta = realFs - settedFs;
                  //不相等
                  if (Math.abs(delta) >= 1) {
                      if (delta > 0)
                          settingFs--;
                      else
                          settingFs++;
                      html.setAttribute('style', 'font-size:' + settingFs + 'px!important');
                  } else
                      break;
                  if (whileCount++ > 100)
                      break
              }
          };
      if (!doc.addEventListener) return;
      win.addEventListener(resizeEvt, recalc, false);
      doc.addEventListener('DOMContentLoaded', recalc, false);
  })(document, window);
  </script>