rem 屏幕适配

屏幕适配方法

var iUA = navigator.userAgent,
    UA = {
      isAndroid: /Android|Adr/i.test(iUA),
      isIOS: /(iPhone|iPod|iPad)/.test(iUA),
      isWindowsPhone: /(?:Windows Phone)/.test(iUA),
      isUCBrowser: /UCBrowser|UCWEB/.test(iUA)
    };
    UA.isPc = !UA.isIOS && !UA.isAndroid && !UA.isUCBrowser;
    if (UA.isPc) {
      self.location = "./oldphoto.html";
    } else {
      (function(doc, win) {
        var docEl = doc.documentElement;
        var resize = function() {
            var clientWidth = docEl.clientWidth;
            docEl.style.fontSize = 100 * (clientWidth / 375) + 'px';
        };
        win.addEventListener('resize', resize);
        resize();
      })(document, window);
    }