The document compares three local storage mechanisms for the front end: Manifest, Web SQL Database, and LocalStorage. Manifest allows caching static files but is difficult to debug and modify. Web SQL Database provides a full SQLite database but has increased learning costs and may be deprecated. LocalStorage is lightweight, fast, easy to use, and widely supported but has quota limits and lacks advanced features.

1. HTML5 三种本地存储方式的比较 前端组 罗晴明 2011-12-20

4. Manifest Example CACHE MANIFEST # Cache manifest version 0.0.1 demoimages/clownfish.jpg demoimages/clownfishsmall.jpg demoimages/flowingrock.jpg demoimages/flowingrocksmall.jpg demoimages/stones.jpg NETWORK: # All URLs that start with the following lines are whitelisted. http://example.com/examplepath/ http://www.example.org/otherexamplepath/ CACHE: # Additional items to cache. demoimages/stonessmall.jpg FALLBACK: demoimages/currentImg.jpg images/stockImage.jpg

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