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HTML Navigator onLine Property
The HTML navigator onLine property returns a boolean value that defines whether the browser is online or offline.
Syntax
Following is the syntax −
navigator.onLine
Let us see an example of HTML navigator onLine property −
Example
<!DOCTYPE html> <html> <style> body { color: #000; height: 100vh; background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) no-repeat; text-align: center; } .btn { background: #db133a; border: none; height: 2rem; border-radius: 20px; width: 330px; display: block; color: #fff; outline: none; cursor: pointer; margin: 1rem auto; } .show { font-size: 1.2rem; color: #fff; } </style> <body> <h1>HTML navigator onLine property Demo</h1> <button class="btn" onclick="display()">Check Browser Online/Offline Mode</button> <div class="show"></div> <script> function display() { var msg = document.querySelector(".show"); if (navigator.onLine) { msg.innerHTML = "Hey! You are online"; } else { msg.innerHTML = "Hey! You are offline"; } } </script> </body> </html>
Output
Click on “Check Browser Online/Offline Mode” button to whether the browser is in online or offline mode −
Now try to disconnect your network and then click again on “Check Browser Online/Offline Mode” button −
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