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Merged
merged 1 commit into from
Jan 23, 2023
Merged

main #43

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Binary file added JavaScript/Advance/Web API/web-worker API/images/js-logo.png
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24 changes: 24 additions & 0 deletions JavaScript/Advance/Web API/web-worker API/index.html
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<!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">
<title>web-worker API</title>
</head>

<body>
<h1>Web Worker API</h1>
<!-- Documentation -->
<button onclick="DisplayOne()">View Doc</button>
<p id="textOne"></p>
<!-- Example One -->
<h2>Count Example</h2>
<button onclick="startWorker()">Start Worker</button>
<button onclick="stopWorker()">Stop Worker</button>
<h1 id="textTwo"></h1>
<script src="script.js"></script>
</body>

</html>
29 changes: 29 additions & 0 deletions JavaScript/Advance/Web API/web-worker API/script.js
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// Web Worker API
let textOne = document.getElementById('textOne');

function DisplayOne() {
textOne.innerHTML = `
<h2>Web Worker is a JavaScript running in the Background</h2>
<h3 style="font-family: sans-serif">When executing scripts in an HTML page, the page becomes unresponsive until the script is finished.

A web worker is a JavaScript that runs in the background, independently of other scripts, without affecting the performance of the page. You can continue to do whatever you want: clicking, selecting things, etc., while the web worker runs in the background.</h3>
`
}

// Example to Understand

let w;

function startWorker() {
if (typeof(w) == "undefined") {
w = new Worker("worker.js");
}
w.onmessage = function(event) {
document.getElementById("textTwo").innerHTML = event.data;
};
}

function stopWorker() {
w.terminate();
w = undefined;
}
9 changes: 9 additions & 0 deletions JavaScript/Advance/Web API/web-worker API/worker.js
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let i = 0;

function timedCount() {
i++;
postMessage(i);
setTimeout("timedCount()", 500);
}

timedCount();