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onchecking event

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Event handler provided to see if the browser is in the process of checking for an update, or is attempting to download the manifest for the first time.

 

Syntax

HTML Attribute <element onchecking = "handler(event)">
Event Property object.onchecking = handler;
addEventListener Method object.addEventListener("checking", handler, useCapture)

 

Event handler parameters

  • handler [in]
    Type: Function

    Event handler

Remarks

If more than one event is triggered and the checking event is included, the next events may include noupdate, downloading, obsolete, or error.

Alternatively, you could use an anonymous delegate function such as

object.onchecking = function (e) { … }

where e is the cached event.