(function(){ //验证网站是否使用了http2 if(window.chrome && typeof chrome.loadTimes === 'function') { var loadTimes = window.chrome.loadTimes() var spdy = loadTimes.wasFetchedViaSpdy var info = loadTimes.npnNegotiatedProtocol || loadTimes.connectionInfo if(spdy && /^h2/i.test(info)) { return console.log('本站点使用了 http2') } } console.warn('本站点未使用 http2') })()