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Definition and UsageThe onoffline attribute fires when the browser's connection status changes from online to offline. Tip: The onoffline attribute is the opposite of the ononline attribute. Browser SupportThe numbers in the table specify the first browser version that fully supports the event attribute.
Syntax
Attribute Values
Technical Details
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Example of HTML onoffline Event Attribute
Here executes a JavaScript when the browser changes from working online to working offline.
index.html
Example:
HTML
<!DOCTYPE html>
<html>
<body ononline="onFunction()" onoffline="offFunction()">
<p>Try to disconnect from the internet to toggle between working online and offline.</p>
<script>
function onFunction() {
alert ("Your browser is working online.");
}
function offFunction() {
alert ("Your browser is working offline.");
}
</script>
</body>
</html>
Output should be:
How to add a JavaScript when the browser changes from working online to working offline
Try to disconnect from the internet to toggle between working online and offline.
index.html
Example:
HTML
<!DOCTYPE html>
<html>
<body ononline="onFunction()" onoffline="offFunction()">
<p>Try to disconnect from the internet to toggle between working online and offline.</p>
<script>
function onFunction() {
alert ("Your browser is working online.");
}
function offFunction() {
alert ("Your browser is working offline.");
}
</script>
</body>
</html>
Output should be:
| html event attributes |
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| What is HTML onload Event Attribute | Window Event Attributes |
| What is HTML onoffline Event Attribute | Window Event Attributes |
| What is HTML ononline Event Attribute | Window Event Attributes |
| What is HTML onpageshow Event Attribute | Window Event Attributes |
| What is HTML onresize Event Attribute | Window Event Attributes |
| How to add a JavaScript when the browser changes from working online to working offline | Window Event Attributes |
Read Full: | Window Event Attributes |
Type: | Develop |
Category: | Web Tutorial |
Sub Category: | Window Event Attributes |
Uploaded by: | Admin |
Views: | 26 |
Reffered: https://www.w3schools.com/tags/ev_onoffline.asp