Which HTML5 API enables offline web application functionality by caching resources?
Question
Which HTML5 API enables offline web application functionality by caching resources?
Solution
The HTML5 API that enables offline web application functionality by caching resources is called the "Application Cache" or "AppCache" API.
Here are the steps to use it:
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Create a cache manifest file: This is a simple text file that lists the resources the browser should cache for offline access.
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Reference the manifest file in your HTML document: You do this by adding the manifest attribute to the html tag like so:
<html manifest="example.appcache">. -
Configure the server to serve the manifest file with the correct MIME type: The server must return the "text/cache-manifest" MIME type when serving the manifest file.
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Update the manifest file: Whenever you want the browser to update the cached resources, you must change something in the manifest file. The browser checks for updates to the manifest file itself to know when to update the cached resources.
Please note that the Application Cache API is deprecated and it's recommended to use the Service Workers API for offline functionality, as it's more powerful and flexible.
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