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When a new version of any cache is available which even is fired?

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When a new version of any cache is available which even is fired?

(a) progress

(b) updateready

(c) checking

(d) obsolete

This question was addressed to me in homework.

My question is based upon Application Cache and Cache Manifest File topic in chapter HTML Images & Web Page Files of HTML

1 Answer

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The correct answer is (b) updateready

For explanation I would say: When there is an availability of the new version of the cache updateready event is fired. When the resources are being downloaded then progress event is fired. Checking event is fired when an update is being checked. Obsolete is fired when the current cache is marked obsolete.

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