Timing info

timingInfo.js

function getTimingInfo() {
    var performance = window.performance || window.webkitPerformance;
    
    if ( !performance || !performance.timing ) return null;

    var timing = performance.timing;

    return [
        timing.loadEventStart - timing.navigationStart,
        timing.domainLookupEnd - timing.domainLookupStart,
        timing.connectEnd - timing.connectStart,
        timing.responseStart - timing.requestStart,
        timing.responseEnd - timing.responseStart,
        timing.fetchStart - timing.navigationStart
    ];
}