ononline event


ononline Event

Instance

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
</head>
<body ononline="onFunction()" onoffline="offFunction()">

<p>打开文件菜单点击 "离线工作（Work Offline）" 来切换在线与离线模式。</p>
<p><strong>注意：</strong>  ononline 和 onoffline 事件只有 Firefox 和 Internet Explorer  8  到 10 版本的浏览器支持。</p>
<script>
function onFunction() {
    alert ("你的浏览器在线工作。");
}
function offFunction() {
    alert ("你的浏览器离线工作。");
}
</script>

</body>
</html>

Run Instance»

Click "Run instance" button to view the online instance


Definition and usage

ononline event is triggered when the browser starts working online.

Tips: The opposite event of ononline is onoffline event.

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

Browser support

The number in the table indicates the version number of the first browser that supports the event.

event




ononlineNot supported IE11 Deprecated
8.0		3.0Not supportedNot supported

##Syntax

In HTML:

<
element ononline="myScript">Try it
In JavaScript:

object.ononline=function(){myScript}; Try it
In JavaScript, use the addEventListener() method:

object.addEventListener("online", myScript );Try it

Note: Internet Explorer 8 and earlier IE versions do not support the addEventListener() method.

Technical details
Whether bubbling is supported:NoCan be canceled:NoEvent type:Event##Supported HTML tags:
<body>

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