手机端网页自适应解决方案

    <script>
        (function (doc, win) {
            var docEl = doc.documentElement,
              resizeEvt = 'orientationchange' in window ? 'orientationchange' : 'resize',
              recalc = function () {
                  var clientWidth = docEl.clientWidth;
                  if (!clientWidth) return;
                  docEl.style.fontSize = 20 * (clientWidth / 320) + 'px';

              };

            if (!doc.addEventListener) return;
            win.addEventListener(resizeEvt, recalc, false);
            doc.addEventListener('DOMContentLoaded', recalc, false);
        })(document, window);

    </script>    <script>
        (function (doc, win) {