Get average performance of server from KeyCDN performance tool

Performance Measure

(function () {
    const TTFBIndex = 8
    const rows = Array.from(document.querySelector(`#perfResult`).children[1].tBodies[0].children).slice(1)
    const sum = rows.reduce((acc, row) => {
        var text = row.children[TTFBIndex].innerText

        if (text.indexOf(`ms`) > -1) {
            // if result is in seconds
            acc += parseFloat(text)
        } else if (text.indexOf(`s`) > -1) {
            // is result is in seconds instead
            acc += parseFloat(text)*1000
        }
        return acc
    }, 0);
    console.log(`Average `, sum / rows.length, " ms");
})();