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6.02 #3

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66aeb3e
worker fix
bedvinas Mar 11, 2022
22d85ed
implemented service worker fetch counter
bedvinas Mar 11, 2022
6b85dc4
fetch counter
bedvinas Mar 11, 2022
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26 changes: 26 additions & 0 deletions lesson-06/service-wookiee/main.js
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Original file line number Diff line number Diff line change
@@ -1,5 +1,29 @@
const template = document.querySelector("#template").content;
const boxes = document.querySelector("#boxes");
const counter = document.querySelector("#request-count");

if ("serviceWorker" in navigator) {
navigator.serviceWorker.register("./sw.js").then(
function (registration) {
// Registration was successful
console.log(
"ServiceWorker registration successful with scope: ",
registration.scope
);
},
function (err) {
// registration failed :(
console.log("ServiceWorker registration failed: ", err);
}
);
}

let clickCount = 0;
navigator.serviceWorker.addEventListener("message", (e) => {
clickCount++;
counter.innerText = clickCount;
console.log(clickCount);
});

for (const fileType of ["text/css", "text/html", "application/json"]) {
// Clone the template for each box
Expand Down Expand Up @@ -46,3 +70,5 @@ for (const fileType of ["text/css", "text/html", "application/json"]) {
});
boxes.appendChild(box);
}

console.log(self);
13 changes: 13 additions & 0 deletions lesson-06/service-wookiee/sw.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
let userClient;

self.addEventListener("fetch", async (e) => {
try {
userClient = await self.clients.get(e.clientId);
if (userClient) {
userClient.postMessage("message");
console.log("inside worker if", userClient);
}
} catch (error) {
console.log("SW error: " + error);
}
});
49 changes: 16 additions & 33 deletions lesson-06/worker-example/index.html
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Original file line number Diff line number Diff line change
@@ -1,37 +1,20 @@
<!DOCTYPE html>
<html lang="en">

<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="style.css">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" href="style.css" />
<title>Worker example</title>
</head>

<body class="bg-gray-50 p-4">
<button id="worker" class="p-4 bg-red-500 rounded text-white">Do hard work</button>
<button id="clicky" class="p-4 bg-blue-500 rounded text-white">See if you can click me</button>
<script>
const hardWorkButton = document.querySelector("#worker")
const clickButton = document.querySelector("#clicky");

function doHardWork() {
let start = Date.now();
console.log("Blocking...");
while (Date.now() < start + 3000) { }
console.log("Unblocked!")
}

let clickCount = 0;
function handleButtonClick(event) {
clickCount++
event.target.innerText = `Clicked ${clickCount} times`;
}

clickButton.addEventListener("click", handleButtonClick);
hardWorkButton.addEventListener("click", doHardWork);
</script>
</body>
</head>

</html>
<body class="bg-gray-50 p-4">
<button id="worker" class="p-4 bg-red-500 rounded text-white">
Do hard work
</button>
<button id="clicky" class="p-4 bg-blue-500 rounded text-white">
See if you can click me
</button>
<script src="main.js"></script>
</body>
</html>
16 changes: 16 additions & 0 deletions lesson-06/worker-example/main.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,16 @@
var myWorker = new Worker("worker.js");

const hardWorkButton = document.querySelector("#worker");
const clickButton = document.querySelector("#clicky");

let clickCount = 0;

function handleButtonClick(event) {
clickCount++;
event.target.innerText = `Clicked ${clickCount} times`;
}

clickButton.addEventListener("click", handleButtonClick);
hardWorkButton.addEventListener("click", () => {
myWorker.postMessage("message");
});
8 changes: 8 additions & 0 deletions lesson-06/worker-example/worker.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,8 @@
self.addEventListener("message", doHardWork);

function doHardWork() {
let start = Date.now();
console.log("Blocking...");
while (Date.now() < start + 3000) {}
console.log("Unblocked!");
}