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HTML | ononline Event Attribute

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  • Difficulty Level : Easy
  • Last Updated : 16 Aug, 2022
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The ononline event attribute works when the browser starts working in online mode. it is opposite to onoffline event attribute.
Supported Tags 

  • <body>

syntax 
 

<element ononline = "script">

Attribute Value: This event attribute contains single value script which works when browser working in online mode.
Example: 
 

html




<!DOCTYPE HTML>
<html>
    <head>
        <title>
            ononline Event Attribute
        </title>
         
        <script>
            function onfunction() {
                alert("Browser is online");
            }
            function offunction() {
                alert("browser is offline");
            }
        </script>
    </head>
 
    <!-- ononline event used here -->
    <body ononline = "onfunction()"
        onoffline = "offunction()">
    </body>
</html>                           

Output: 
 

Supported Browser: 

  • Chrome 3
  • Edge 12
  • Firefox 9
  • Internet Explorer 9
  • Opera 15
  • Safar 4 
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