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window.addEventListener("load", function () {
let str = "さ".repeat(97);
for (let i = 0; i < 2000; i++) {
let p = document.createElement("p");
p.textContent = str;
document.body.appendChild(p);
}
let floating = document.createElement("div");
floating.style.position = "absolute";
floating.style.top = "5px";
floating.style.left = "0px";
floating.style.backgroundColor = "white";
floating.innerHTML =
"あああああああああああ<br>あああああああああああ<br>あああああああああああ<br>あああああああああああ<br>あああああああああああ<br>あああああああああああ";
document.body.appendChild(floating);
flush_layout(floating);
perf_start();
for (let i = 0; i < 1000; i++) {
floating.style.left = i + "px";
flush_layout(floating);
}
perf_finish();
});