Performance Function

gistfile1.txt

function mwurzbergerGetPerformanceData ( includeEntries, includeRaw ) 
{
    includeEntries = includeEntries || false;
    includeRaw = includeRaw || false;

    var timing = window.performance.timing;
    var entries = window.performance.getEntries();
    
    var performanceRecord = {
        'page': window.location.href || window.location || 'Undefined',
        'navigation': 
        {  
            'appCodeName': navigator.appCodeName || 'undefined',
            'appName': navigator.appName || 'undefined',
            //'appVersion': navigator.appVersion || 'undefined',
            'userAgent': navigator.userAgent || 'undefined',
            'platform': navigator.platform || 'undefined'
        }
    };        

    /* 
    * See http://www.w3.org/TR/navigation-timing/#processing-model
    */
    performanceRecord.pageTiming = {
        'duration': parseInt(timing.loadEventEnd - timing.navigationStart),
        'network': {
            'startTime': timing.navigationStart,
            'endTime': timing.connectEnd,
            'duration': parseInt(timing.connectEnd - timing.navigationStart),                
            'dns': parseInt(timing.domainLookupEnd - timing.domainLookupStart),
            'tcp': parseInt(timing.connectEnd - timing.connectStart)
        },
        'server': {
            'startTime': timing.requestStart,
            'endTime': timing.responseEnd,
            'duration': parseInt(timing.responseEnd - timing.requestStart),      
            'request': parseInt(timing.responseStart - timing.requestStart),
            'response': parseInt(timing.responseEnd - timing.responseStart)
        },
        'browser': {
            'startTime': timing.unloadEventStart,
            'endTime': timing.loadEventEnd,
            'duration': parseInt(timing.loadEventEnd - timing.unloadEventStart),
            'domLoading': parseInt(timing.domLoading - timing.responseEnd),
            'domInteractive': parseInt(timing.domInteractive - timing.domLoading),
            'domContentLoad': parseInt(timing.domContentLoadedEventEnd - timing.domContentLoadedEventStart),
            'domComplete': parseInt(timing.domComplete - timing.domContentLoadedEventEnd),
            'loadEvent': parseInt(timing.loadEventEnd - timing.domComplete)
        }            
    };

    if( includeRaw ){
        performanceRecord.pageTiming.raw = timing;
    }

    if( includeEntries ){
        /*
        * See explanation here http://googledevelopers.blogspot.com/2013/12/measuring-network-performance-with.html
        */
        performanceRecord.entries = [];
        for( var x = 0; x < entries.length; x++ ){
            var entry = entries[x];
            var newEntry = {                
                'url': entry.name,
                'entryType': entry.entryType ,
                'initiatorType': entry.initiatorType ,
                'startTime': entry.startTime,
                'endTime': entry.responseEnd,
                'duration': parseInt(entry.responseEnd - entry.startTime),
                'tcp': parseInt(entry.connectEnd - entry.connectStart),
                'dns': parseInt(entry.domainLookupEnd - entry.domainLookupStart),
                'ttfb': parseInt(entry.responseStart - entry.startTime),
                'transfer': parseInt(entry.responseEnd - entry.responseStart)
            };
            performanceRecord.entries.push(newEntry);
        }
    }

    return performanceRecord;
}

if( window.bookmarklet_77fdfb2f8df9c9baba57 ){
    alert( JSON.stringify(mwurzbergerGetPerformanceData(), null, 2) );
}