checkVersion.js(檢查瀏覽器類型)
function checkVersion(){
    var u = navigator.userAgent, app = navigator.appVersion;
    return {
      trident: u.indexOf(‘Trident‘) > -1, //IE內核
      presto: u.indexOf(‘Presto‘) > -1, //opera內核
      webKit: u.indexOf(‘AppleWebKit‘) > -1, //蘋果、谷歌內核
      gecko: u.indexOf(‘Gecko‘) > -1 && u.indexOf(‘KHTML‘) == -1,//火狐內核
      mobile: !!u.match(/AppleWebKit.*Mobile.*/), //是否為移動終端
      ios: !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/), //ios終端
      android: u.indexOf(‘Android‘) > -1 || u.indexOf(‘Adr‘) > -1, //android終端
      iPhone: u.indexOf(‘iPhone‘) > -1 , //是否為iPhone或者QQHD瀏覽器
      iPad: u.indexOf(‘iPad‘) > -1, //是否iPad
      webApp: u.indexOf(‘Safari‘) == -1, //是否web應該程序，沒有頭部與底部
      weixin: u.indexOf(‘MicroMessenger‘) > -1, //是否微信
      qq: u.match(/\sQQ/i) == " qq", //是否QQ
      app: u.indexOf(‘tiantianApp‘) > -1 //是否在app內
    };
  }
  function allUrl(){
    return ‘https://www.tiantianyuyin.com‘;
  } 


rem750.js　(ren布局)

var layout_width = 750;
(function(doc, win) {
    var docEl = doc.documentElement,
        resizeEvt = ‘orientationchange‘ in window ? ‘orientationchange‘ : ‘resize‘,
        recalc = function() {
            var clientWidth = docEl.clientWidth;
            if (!clientWidth) return;
            if (clientWidth >= layout_width) {
                docEl.style.fontSize = ‘100px‘;
            } else {
                docEl.style.fontSize = 100 * (clientWidth / layout_width) + ‘px‘;
            }
        };

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

js工具函數