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 - Cross Domain Web Workers - Stack Overflow

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    I am aware that this question might be considered duplicate, but it is a new technology and I can not find a recent confirmation of my findings. I also think it potentially useful to have all the error messages in one place (feel free to add any other browsers).

    trying to loads a worker script from another domain:

    new Worker('.js');

    I have set headers (using ModHeader Chrome Extension) to:

    Access-Control-Allow-Methods:* Access-Control-Allow-Origin:*

    But in Chrome I get:

    Uncaught SecurityError: Failed to construct 'Worker': Script at 'http:otherdomain.co/worker.js' cannot be accessed from origin

    Safari give me:

    [Error] SecurityError: DOM Exception 18: An attempt was made to break through the security policy of the user agent

    Firefox gives me:

    SecurityError: The operation is insecure.

    Is it still that this is not something we can do? If so, what is considered the best practise work around?

    I am aware that this question might be considered duplicate, but it is a new technology and I can not find a recent confirmation of my findings. I also think it potentially useful to have all the error messages in one place (feel free to add any other browsers).

    trying to loads a worker script from another domain:

    new Worker('http://otherdomain.co/worker.js');

    I have set headers (using ModHeader Chrome Extension) to:

    Access-Control-Allow-Methods:* Access-Control-Allow-Origin:*

    But in Chrome I get:

    Uncaught SecurityError: Failed to construct 'Worker': Script at 'http:otherdomain.co/worker.js' cannot be accessed from origin

    Safari give me:

    [Error] SecurityError: DOM Exception 18: An attempt was made to break through the security policy of the user agent

    Firefox gives me:

    SecurityError: The operation is insecure.

    Is it still that this is not something we can do? If so, what is considered the best practise work around?

    • javascript
    • browser
    • cross-domain
    • web-worker
    • xdomainrequest
    Share Improve this question asked May 30, 2014 at 11:29 Mild FuzzMild Fuzz 30.7k34 gold badges105 silver badges151 bronze badges 1
    • just stumbled across this: stackoverflow./a/21771754/1667461 – escapedcat Commented Jan 26, 2016 at 15:20
    Add a ment  | 

    3 Answers 3

    Reset to default 7

    I know it's a little late now, but is this what you're looking for?

    "Creates a url for the specified blob that can be passed to methods that expect a url. When done with the returned url, call revokeObjectURL() to free the resources associated with the created url."

    This method easily allows you to create a Worker using a local script instead of a remote url.

    You are not allowed to create cross-domain web workers.

    Note : The URI passed as parameter of the Worker constructor must obey the same-origin policy . There is currently disagreement among browsers vendors on what URIs are of the same-origin; Gecko 10.0 (Firefox 10.0 / Thunderbird 10.0 / SeaMonkey 2.7) and later do allow data URIs and Internet Explorer 10 does not allow Blob URIs as a valid script for workers.

    Source: https://developer.mozilla/en/docs/Web/Guide/Performance/Using_web_workers

    One workaround that I can think of is to create a server-side script to load the required remote JS file, and supply it to the browser from your domain.

    Eg: You supply url to :

    http://YOUR_DOMAIN/getRemoteJS.php

    This PHP file will request the remote file on the server side, and echo it as the response, and set mime-type to application/javascript.

    I have not personally tried this workaround, but you can perhaps look into it.

    Good Luck!

    There's a way to run cross-origin workers with:

    • fetching JS code of the worker
    • run worker from data: string or blob:

    Working solution: https://github./CezaryDanielNowak/CrossOriginWorker

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