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document.body.innerHTML = `
<pre id="history"></pre>
<form>
<input id="message" type="text">
<button id="send">Send Message</button>
</form>
<p>Computing fibonacci without worker:</p>
<input id="fib1" type="number">
<pre id="output1"></pre>
<p>Computing fibonacci with worker:</p>
<input id="fib2" type="number">
<pre id="output2"></pre>
`;
const history = document.getElementById("history");
const message = document.getElementById("message");
const send = document.getElementById("send");
const fib1 = document.getElementById("fib1");
const output1 = document.getElementById("output1");
const fib2 = document.getElementById("fib2");
const output2 = document.getElementById("output2");
/// CHAT with shared worker ///
const chatWorker = new SharedWorker(
new URL("./chat-worker.js", import.meta.url),
{
name: "chat",
type: "module"
}
);
let historyTimeout;
const scheduleUpdateHistory = () => {
clearTimeout(historyTimeout);
historyTimeout = setTimeout(() => {
chatWorker.port.postMessage({ type: "history" });
}, 1000);
};
scheduleUpdateHistory();
const from = `User ${Math.floor(Math.random() * 10000)}`;
send.addEventListener("click", e => {
chatWorker.port.postMessage({
type: "message",
content: message.value,
from
});
message.value = "";
message.focus();
e.preventDefault();
});
chatWorker.port.onmessage = event => {
const msg = event.data;
switch (msg.type) {
case "history":
history.innerText = msg.history.join("\n");
scheduleUpdateHistory();
break;
}
};
/// FIBONACCI without worker ///
fib1.addEventListener("change", async () => {
try {
const value = parseInt(fib1.value, 10);
const { fibonacci } = await import("./fibonacci");
const result = fibonacci(value);
output1.innerText = `fib(${value}) = ${result}`;
} catch (e) {
output1.innerText = e.message;
}
});
/// FIBONACCI with worker ///
const fibWorker = new Worker(new URL("./fib-worker.js", import.meta.url), {
name: "fibonacci",
type: "module"
/* webpackEntryOptions: { filename: "workers/[name].js" } */
});
fib2.addEventListener("change", () => {
try {
const value = parseInt(fib2.value, 10);
fibWorker.postMessage(`${value}`);
} catch (e) {
output2.innerText = e.message;
}
});
fibWorker.onmessage = event => {
output2.innerText = event.data;
};
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