Socket.IO 瀏覽器兼容代碼

if (/Firefox\/\s/.test(navigator.userAgent)){ var socket = io.connect('127.0.0.1:8000',{transports:['xhr-polling']}); } else if (/MSIE (\d+.\d+);/.test(navigator.userAgent)){ var socket = io.connect('127.0.0.1:8000',{transports:['jsonp-polling']}); } else { var socket = io.connect('127.0.0.1:8000'); }