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example.html
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<!doctype html>
<html>
<!--
detectIncognito.js - JavaScript Private Browsing Detection
https://github.com/Joe12387/detectIncognito
MIT License
Copyright (c) 2021 - 2024 Joe Rutkowski <[email protected]>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
-->
<head>
<title>detectIncognito - JavaScript Private Browsing Detection</title>
<style>
@import url('https://fonts.googleapis.com/css?family=Montserrat&display=swap');
body {
font-family: 'Montserrat', sans-serif;
}
.wrapper {
height: 200px;
width: 600px;
position: fixed;
top: 50%;
left: 50%;
margin-top: -100px;
margin-left: -200px;
}
</style>
<meta name="description" content="The only working Javascript library to detect incognito mode & other private browsing modes as of 2024."/>
</head>
<body>
<div class="wrapper">
<h2>Is this a Private Browsing window?</h2>
<div id="answer"><noscript><b>detectIncognito requires JavaScript in order to function</b>, please enable it.</noscript><br/></div>
<br/>
<div>
<p>Powered by <a href="https://github.com/Joe12387/detectIncognito">detectIncognito.js</a>.</p>
</div>
</div>
<script>
var exports = {};
function getModeName(browserName) {
switch (browserName) {
case "Safari":
case "Firefox":
case "Brave":
case "Opera":
return "a Private Window";
break;
case "Chrome":
case "Chromium":
return "an Incognito Window";
break;
case "Internet Explorer":
case "Edge":
return "an InPrivate Window";
break;
}
throw new Error("Could not get mode name");
}
// This function is called when the script is loaded
function detect() {
var a = document.getElementById("answer");
// We call the detectIncognito function and handle the promise
detectIncognito().then(function(result) {
if (result.isPrivate) { // If the result is private, we display a message to the user
a.innerHTML = "<b>Yes</b>. You are using " + result.browserName + " in " + getModeName(result.browserName) + ".";
} else { // If the result is not private, we display a message to the user
a.innerHTML = "<b>No</b>. You are using " + result.browserName + " in a regular browser window.";
}
}).catch(function(error) { // If there is an error, we display a message to the user & log the error to console
a.innerHTML = "<b>There was an error.</b> Check console for further information. If the problem persists, please <a href='https://github.com/Joe12387/detectIncognito/issues'>report the issue</a> on GitHub.";
console.error(error);
});
}
// To handle the CDN being blocked by adblockers, we load the script using createElement
var script = document.createElement('script');
// We then set the onload and onerror events to detect whether the script was loaded successfully
script.onload = detect;
// If the script fails to load, we display a message to the user
script.onerror = function () {
var a = document.getElementById("answer");
a.innerHTML = "<b>The script failed to load from the CDN.</b> ";
if (navigator.brave !== undefined) {
a.innerHTML += "If you are using Brave, please turn off shields by clicking the Brave icon to the right of the location bar and try again.";
} else {
a.innerHTML += "If you are using an adblocker, please disable it and try again.";
}
a.innerHTML += " If the problem persists, please <a href='https://github.com/Joe12387/detectIncognito/issues'>report the issue</a> on GitHub.";
};
script.src = 'https://cdn.jsdelivr.net/gh/Joe12387/detectIncognito@main/dist/es5/detectIncognito.min.js';
document.body.appendChild(script);
</script>
<!-- To load the script without inline JS and without error handling to account for adblockers, do this: -->
<!-- <script src="https://cdn.jsdelivr.net/gh/Joe12387/detectIncognito@main/dist/es5/detectIncognito.min.js"></script> -->
</body>
</html>