onoffline event

DOM events Event objekt

Definition and usage

The onoffline event occurs when the browser starts working offline.

Tip:onoffline event with online事件 Conversely.

Tip:You can also use navigator.onLine property to determine whether the browser is in online or offline mode.

Example

Execute JavaScript when the browser starts working offline:

<body onoffline="myFunction()">

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Syntax

In HTML:

<element onoffline="myScript">

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In JavaScript:

object.onoffline = function(){myScript};

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In JavaScript, use the addEventListener() method:

object.addEventListener("offline", myScript);

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Note:Internet Explorer 8 or earlier versions do not support addEventListener() method.

Technical details

Bubbling: Ikke understøttet
Cancellable: Ikke understøttet
Event type: Event
Supported HTML tags: <body>
DOM version: Level 3 Events

Browserstøtte

Tallene i tabellen angiver den første browserversion, der fuldt ud understøtter dette event.

Event Chrome IE Firefox Safari Opera
offline Ikke understøttet. Afbrudt fra IE11
8.0		 3.0 Ikke understøttet Ikke understøttet
DOM events Event objekt