PerformanceTests/Interactive/SelectAll.html

<!DOCTYPE html>
<html>
<body>
<script src="../resources/runner.js"></script>
<script>

PerfTestRunner.prepareToMeasureValuesAsync({
    unit: 'ms',
    done: function () {
        var iframe = document.querySelector('iframe');
        iframe.parentNode.removeChild(iframe);
    }
});

function runTest() {
    var iframe = document.querySelector('iframe');
    iframe.contentWindow.getSelection().removeAllRanges();
    iframe.contentDocument.body.offsetTop;

    setTimeout(function () {
        var startTime = PerfTestRunner.now();
        iframe.contentDocument.execCommand('SelectAll');
        iframe.contentDocument.body.offsetTop;
        setTimeout(function () {
            if (!PerfTestRunner.measureValueAsync(PerfTestRunner.now() - startTime))
                return;
            PerfTestRunner.gc();
            setTimeout(runTest, 0);
        }, 0);
    }, 0);
}

</script>
<iframe src="../Parser/resources/html5.html" onload="runTest()" width="800" height="600">
</body>
</html>