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 - How to determine if browser is supporting js pushState function? - Stack Overflow

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    javascript - How to determine if browser is supporting js pushState function? - Stack Overflow

    programmeradmin3浏览0评论

    I want to use dynamic URL update through js script:

    window.history.pushState("string", "Title", "/new-url");

    But if browser is old and not supporing this function it should simply redirect to new URL.

    Is there any simple way to check it ?

    I want to use dynamic URL update through js script:

    window.history.pushState("string", "Title", "/new-url");

    But if browser is old and not supporing this function it should simply redirect to new URL.

    Is there any simple way to check it ?

    • javascript
    • html
    Share Improve this question asked Apr 1, 2014 at 9:10 VololodymyrVololodymyr 2,2886 gold badges31 silver badges53 bronze badges 1
    • Possible duplicate of: stackoverflow./questions/4966090/can-use-pushstate – witherwind Commented Apr 1, 2014 at 9:16
    Add a ment  | 

    4 Answers 4

    Reset to default 7

    You simply check:

    if (history.pushState) {

}

    The easiest (and most performant):

    if ('history' in window && 'pushState' in history) { // available

    Still, I'd suggest using some established solutions for history management, like History.js.

    try {
    window.history.pushState("string", "Title", "/new-url");
} catch ( e ) {
    window.location = "/new-url";
}

    if(!!history && !!history.pushState){
   //browsers which support history and history's push state method
}

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