javascript 来自https://developers.google.com/analytics/devguides/collection/analyticsjs/user-timings

Posted 2021-05-03

var startTime;

function loadJs(url, callback) {
    var js = document.createElement('script');
    js.async = true;
    js.src = url;
    var s = document.getElementsByTagName('script')[0];
    js.onload = trackTimingCallback;
    startTime = new Date().getTime();
    s.parentNode.insertBefore(js, s);
}

function trackTimingCallback(event) {
    var endTime = new Date().getTime();
    var timeSpent = endTime - startTime;
    ga('send', 'timing', 'jQuery', 'Load Library', timeSpent, 'Google CDN'); // Library has loaded. Now you can use it.};

var startTime;function loadJs(url, callback) {  var js = document.createElement('script');  js.async = true;  js.src = url;  var s = document.getElementsByTagName('script')[0];  js.onload = trackTimingCallback;  startTime = new Date().getTime();  s.parentNode.insertBefore(js, s);}function trackTimingCallback(event) {  var endTime = new Date().getTime();  var timeSpent = endTime - startTime;  ga('send', 'timing', 'jQuery', 'Load Library', timeSpent, 'Google CDN');  // Library has loaded. Now you can use it.};