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 −
