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; } ?>html - JavaScript XMLHttpRequest() and Redirect - Stack Overflow

科技改变生活-雨落星辰 - 所有的伟大,都源于一个勇敢的开始

    最新消息：雨落星辰是一个专注网站SEO优化、网站SEO诊断、搜索引擎研究、网络营销推广、网站策划运营及站长类的自媒体原创博客
    你的位置： 首页>programmer>html - JavaScript XMLHttpRequest() and Redirect - Stack Overflow

    html - JavaScript XMLHttpRequest() and Redirect - Stack Overflow

    programmeradmin5浏览0评论

    I want to send a XMLRequest to server and then redirect user to front page so far I have:

    var posts = new XMLHttpRequest();
var api="XXXXXXXXXX";
posts.open("GET", api+user+"/"+password+"/"+id+"/"+latitude, true);
posts.send();

window.location = "index.html"

    If I only run the code without the redirect at the end it works great but if I have a the redirect the API GET request fails. Can someone explain to me what I'm missing?

    I want to send a XMLRequest to server and then redirect user to front page so far I have:

    var posts = new XMLHttpRequest();
var api="XXXXXXXXXX";
posts.open("GET", api+user+"/"+password+"/"+id+"/"+latitude, true);
posts.send();

window.location = "index.html"

    If I only run the code without the redirect at the end it works great but if I have a the redirect the API GET request fails. Can someone explain to me what I'm missing?

    • javascript
    • html
    • http-redirect
    Share Improve this question edited Nov 5, 2015 at 16:54 11mb 1,3592 gold badges17 silver badges33 bronze badges asked Oct 26, 2015 at 20:22 John DownJohn Down 5202 gold badges6 silver badges20 bronze badges 2
    • It is asynchronous. The browser is redirected before the result it back. – Rik Commented Oct 26, 2015 at 20:23
    • If you're doing the XHR in order to make something happen at the server, you really should do a POST and not a GET to avoid a very simple CSRF vulnerability. – Pointy Commented Oct 26, 2015 at 20:24
    Add a ment  | 

    1 Answer 1

    Reset to default 13

    The requests are asynchronous that means window.location will not wait for the request to plete before executing. That results in navigating away from the current page and the browser canceling the request.

    To fix this you have to wait for the request to plete before navigating away. You can do this by listening to the state changes of the request.

    var posts = new XMLHttpRequest();
posts.onreadystatechange = function() { // listen for state changes
  if (posts.readyState == 4 && posts.status == 200) { // when pleted we can move away
    window.location = "index.html";
  }
}
posts.open("GET", api+user+"/"+password+"/"+id+"/"+latitude, true);
posts.send();

    与本文相关的文章

    发布评论

    评论列表(0)

    1. 暂无评论