te')); return $arr; } /* 遍历用户所有主题 * @param $uid 用户ID * @param int $page 页数 * @param int $pagesize 每页记录条数 * @param bool $desc 排序方式 TRUE降序 FALSE升序 * @param string $key 返回的数组用那一列的值作为 key * @param array $col 查询哪些列 */ function thread_tid_find_by_uid($uid, $page = 1, $pagesize = 1000, $desc = TRUE, $key = 'tid', $col = array()) { if (empty($uid)) return array(); $orderby = TRUE == $desc ? -1 : 1; $arr = thread_tid__find($cond = array('uid' => $uid), array('tid' => $orderby), $page, $pagesize, $key, $col); return $arr; } // 遍历栏目下tid 支持数组 $fid = array(1,2,3) function thread_tid_find_by_fid($fid, $page = 1, $pagesize = 1000, $desc = TRUE) { if (empty($fid)) return array(); $orderby = TRUE == $desc ? -1 : 1; $arr = thread_tid__find($cond = array('fid' => $fid), array('tid' => $orderby), $page, $pagesize, 'tid', array('tid', 'verify_date')); return $arr; } function thread_tid_delete($tid) { if (empty($tid)) return FALSE; $r = thread_tid__delete(array('tid' => $tid)); return $r; } function thread_tid_count() { $n = thread_tid__count(); return $n; } // 统计用户主题数 大数量下严谨使用非主键统计 function thread_uid_count($uid) { $n = thread_tid__count(array('uid' => $uid)); return $n; } // 统计栏目主题数 大数量下严谨使用非主键统计 function thread_fid_count($fid) { $n = thread_tid__count(array('fid' => $fid)); return $n; } ?>javascript - HTML5 sessionStorage or chrome.storage for Chrome Extension? - Stack Overflow

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    I have a Chrome Extension that is only a content script. I want to persist some data that is calculated in the content script so I can easily access it while browsing without having to recalculate it on each page. I only need the data to be stored for the session.

    I was looking at the chrome.storage API but it seems data will persist there past the session. I have previous experience using HTML5 sessionStorage, but I feel like I should be leveraging Google's API here.

    Any input is appreciated, thanks!

    I have a Chrome Extension that is only a content script. I want to persist some data that is calculated in the content script so I can easily access it while browsing without having to recalculate it on each page. I only need the data to be stored for the session.

    I was looking at the chrome.storage API but it seems data will persist there past the session. I have previous experience using HTML5 sessionStorage, but I feel like I should be leveraging Google's API here.

    Any input is appreciated, thanks!

    • javascript
    • google-chrome-extension
    • session-storage
    • google-chrome-storage
    Share Improve this question edited Sep 15, 2016 at 0:45 Daniel Herr 20.5k9 gold badges48 silver badges65 bronze badges asked Sep 15, 2016 at 0:13 sbrusbru 8876 gold badges21 silver badges36 bronze badges
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    2 Answers 2

    Reset to default 10

    Inside a content script, using sessionStorage will access and modify the sessionStorage of that site, not of your extension.

    You must use chrome.storage.local if you want it to be available to content scripts on other sites and to avoid breaking the sites.

    There is no automatic clearing of chrome.storage.local data, but you can create an event page that clears it on startup.

    manifest.json:

    "background": { "scripts": [ "background.js" ], "persistent": false }

    background.js:

    chrome.runtime.onStartup.addListener(function() {
 chrome.storage.local.clear()
})

    chrome.storage.local.clear

    chrome.runtime.onStartup

    Event Pages

    As of Chrome 102+ there is now a session based storage API for Chrome extensions. It stores data in memory.

    https://developer.chrome./docs/extensions/reference/storage/#property-session

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