摘要：
var getOs=function() { try{var u = window.navigator.userAgent.toLocaleLowerCase(),msie = /(msie) ([\d.]+)/,chrome = /(chrome)\/([\d.]+)/,firefox = /(firefox)\/([\d.]+)/,safari = /(safari)\/([\d.]+)/,opera = /(opera)\/([\d.]+)/,ie11 = /(trident)\/([\d.]+)/,b = u.match(msie)||u.match(chrome)||u.match( 阅读全文
