提取浏览加载页面的性能状况

 
function getPerformance() {
    var f = "";
    var e = "";
    var d;
    var b = "";
    f = window.performance;
    var a = f.timing;
    d = a.navigationStart;
    if (typeof a.secureConnectonStart == "undefined") {
        a.secureConnectonStart = "-"
    }
    b = new Date();
    for (var c in a) {
        if ((a[c] != "0") && (a[c] != "-")) {
            if ((a[c] - b > diffTime) || (b - a[c]) > diffTime) {
                return null
            }
        }
    }
    e = a.navigationStart + "|" + a.redirectStart + "|" + a.redirectEnd + "|" + a.fetchStart + "|" + a.domainLookupStart + "|" + a.domainLookupEnd + "|" + a.connectStart + "|" + a.secureConnectonStart + "|" + a.connectEnd + "|" + a.requestStart + "|" + a.responseStart + "|" + a.unloadEventStart + "|" + a.unloadEventEnd + "|" + a.responseEnd + "|" + a.domLoading + "|" + a.domInteractive + "|" + a.domContentLoadedEventStart + "|" + a.domContentLoadedEventEnd + "|" + a.domComplete + "|" + a.loadEventStart + "|" + a.loadEventEnd + "&cTime=" + d;
    return e
}
//该片段来自于http://www.codesnippet.cn/detail/2008201513501.html

来源: http://www.codesnippet.cn/detail/2008201513501.html