azq_browse_performance_timing.js

(function f() {
  async function sleep(mills) {
    return new Promise((resolve, reject) => {
      setTimeout(() => {
        return resolve()
      }, mills)
    })
  }
  async function getPerformanceData() {
    const maxTry = 10;
    for (let i = 1; i <= maxTry; i++) {
      var perfEntries = performance.getEntriesByType("navigation");
      if (perfEntries && perfEntries.length > 0) {
        var p = perfEntries[0];
        if (p.loadEventEnd > 0 || i == maxTry) {
          console.log("azq_time_origin", performance.timeOrigin);
          console.log("azq_performance_timing", JSON.stringify(p.toJSON()));
          break;
        }
      }
      await sleep(200);
    }
  }
  getPerformanceData();
})()