What is the Application Cache in HTML5 and why it is used?

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The Application Cache concept means that a web application is cached. It can be accessed without the need for an internet connection.
Some advantages of Application Cache:

Offline browsing &ndash; Web users can also use the application when they are offline.
Speed &ndash; Cached resources load quicker
Reduce the server load &ndash; The web browser will only download updated resources from the server.

What is the Application Cache in HTML5 and why it is used?

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