html manifest attribute fixes: 2a)
2. updating the cached resources AND ALSO modifying the Manifest file
a) modifying the manifest file by adding one or more new resources to be cached
Tests results:
- NOT Ok: re-accessing the page in a new tab
- Ok: refreshing the page
- Ok: closing ⁄re-opening browser and re-accessing the page
Conclusion: if you update a cached resource and also modify the Manifest file (+ re-uploading modified resources on Server of course), the user's cached resources from OfflineCache Directory update and display if he:
- access the page: assuming the page is not opened in Browser
- reloads ⁄refresh the page: assuming the page is opened in Browser
Video demonstration html manifest attribute: Fixes 2a)
HTML5 manifest file Fixes, Tutorial
| min | video details |
|---|---|
| 00:02 | open browser |
| 00:09 | clear recent history: cache, offline data... |
| 00:13 | accessing about:cache page |
| 00:18 | the Offline cache directory is empty |
| 00:22 | accessing an html file linked to a manifest file |
| 00:24 | Allow data storage for Offline use |
| 00:30 | accessing the List of Cache Entries |
| 00:32 | 4 resources have been cached, index.php is one of them |
| 00:44 | we will update the index.php file buy adding a paragraph |
| 01:09 | we will change the manifest file by adding a new resource (w3video.png) to be cached |
| 01:12 | quick recap: 1. we've updated a cached ressource: index.php 2. we've changed the manifest file by adding a new ressource:w3video.png |
| 01:25 | re-uploading the changed cached resources: index.php and test.appcache on Server Question: Will the updated index.php page display ? |
| 01:40 | Test 1: re-accessing the cached page in a new tab Test result: NOT OK the cached resources got updated but don't display; the page needs to reload ⁄refresh |
| 01:48 | Test 2: refreshing the cached page Test result: OK the cached resource, got updated and display |
| 01:52 | Test 3: closing and reopening the browser AND reaccessing the page Test result: OK the cached resource, got updated and display |