offline

Overview Table

Synchronous	No
Bubbles	No
Target	dom/Element
Cancelable	No
Default action

## Examples

The following example sets an event handler that responds to both ononline and onoffline events using the type property of the event object.

function reportConnectionEvent(e)
{
    if (!e) e = window.event;

    if ('online' == e.type) {
        alert( 'The browser is ONLINE.' );
    }
    else if ('offline' == e.type) {
        alert( 'The browser is OFFLINE.' );
    }
    else {
        alert( 'Unexpected event: ' + e.type );
    }
}
window.onload = function() {
    document.body.ononline = reportConnectionEvent;
    document.body.onoffline = reportConnectionEvent;
}

Notes

Remarks

If Asynchronous JavaScript and XML (AJAX) Connection Services are disabled, this event is not raised. (These services are enabled by default.) To invoke this event, do one of the following:

Set the browser to “Work Offline” on the File menu.

Syntax

Standards information

There are no standards that apply here.

Event handler parameters

pEvtObj [in]: Type: ****IHTMLEventObj****

Attributions

Microsoft Developer Network: [Windows Internet Explorer API reference Article]