Historically, which HTML5 feature allowed offline web applications by caching resources using a manifest file?

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Prepare for the uCertify CIW Advanced HTML5 and CSS3 Specialist Exam. Dive into essential topics with flashcards and multiple-choice questions. Enhance your understanding with hints and explanations for each question. Pass your exam confidently!

Multiple Choice

Historically, which HTML5 feature allowed offline web applications by caching resources using a manifest file?

Explanation:
Application Cache lets an offline web app work by listing resources in a manifest file that the browser caches. The manifest is served with a special MIME type and referenced by the page, telling the browser which files to store and how to treat online versus offline requests. On an online load, the browser caches the files listed under the CACHE section, so when the user goes offline, the app can run from those cached resources. The manifest can also specify resources that must always be fetched online (NETWORK) and define offline fallbacks (FALLBACK). When the manifest changes, the browser updates the cached resources, enabling the app to continue functioning offline with the latest assets. This approach was the historical method for offline capabilities, before service workers and the Cache API provided more flexible and reliable offline support.

Application Cache lets an offline web app work by listing resources in a manifest file that the browser caches. The manifest is served with a special MIME type and referenced by the page, telling the browser which files to store and how to treat online versus offline requests. On an online load, the browser caches the files listed under the CACHE section, so when the user goes offline, the app can run from those cached resources. The manifest can also specify resources that must always be fetched online (NETWORK) and define offline fallbacks (FALLBACK). When the manifest changes, the browser updates the cached resources, enabling the app to continue functioning offline with the latest assets. This approach was the historical method for offline capabilities, before service workers and the Cache API provided more flexible and reliable offline support.

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