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Chapter 13. Browser Experience in HTML5 > Application Cache API
Application Cache API
When the browser reloads a page that has a manifest, it first checks to see whether there are any changes, and then if there are changes to the file, it does the update in the background. If you open a page with a manifest in Chrome, open the Developer Console, and refresh the page, you will see it returns the following:
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Document was loaded from Application Cache with manifest http://website/13_3_cookbook.appcache Application Cache Checking event Application Cache NoUpdate event
