权限没有,则隐藏 function forum_list_access_filter($forumlist, $gid, $allow = 'allowread') { global $grouplist; if (empty($forumlist)) return array(); if (1 == $gid) return $forumlist; $forumlist_filter = $forumlist; $group = $grouplist[$gid]; foreach ($forumlist_filter as $fid => $forum) { if (empty($forum['accesson']) && empty($group[$allow]) || !empty($forum['accesson']) && empty($forum['accesslist'][$gid][$allow])) { unset($forumlist_filter[$fid]); } unset($forumlist_filter[$fid]['accesslist']); } return $forumlist_filter; } function forum_filter_moduid($moduids) { $moduids = trim($moduids); if (empty($moduids)) return ''; $arr = explode(',', $moduids); $r = array(); foreach ($arr as $_uid) { $_uid = intval($_uid); $_user = user_read($_uid); if (empty($_user)) continue; if ($_user['gid'] > 4) continue; $r[] = $_uid; } return implode(',', $r); } function forum_safe_info($forum) { //unset($forum['moduids']); return $forum; } function forum_filter($forumlist) { foreach ($forumlist as &$val) { unset($val['brief'], $val['announcement'], $val['seo_title'], $val['seo_keywords'], $val['create_date_fmt'], $val['icon_url'], $val['modlist']); } return $forumlist; } function forum_format_url($forum) { global $conf; if (0 == $forum['category']) { // 列表URL $url = url('list-' . $forum['fid'], '', FALSE); } elseif (1 == $forum['category']) { // 频道 $url = url('category-' . $forum['fid'], '', FALSE); } elseif (2 == $forum['category']) { // 单页 $url = url('read-' . trim($forum['brief']), '', FALSE); } if ($conf['url_rewrite_on'] > 1 && $forum['well_alias']) { if (0 == $forum['category'] || 1 == $forum['category']) { $url = url($forum['well_alias'], '', FALSE); } elseif (2 == $forum['category']) { // 单页 $url = ($forum['threads'] && $forum['brief']) ? url($forum['well_alias'] . '-' . trim($forum['brief']), '', FALSE) : url($forum['well_alias'], '', FALSE); } } return $url; } function well_forum_alias() { $forumlist = forum_list_cache(); if (empty($forumlist)) return ''; $key = 'forum-alias'; static $cache = array(); if (isset($cache[$key])) return $cache[$key]; $cache[$key] = array(); foreach ($forumlist as $val) { if ($val['well_alias']) $cache[$key][$val['fid']] = $val['well_alias']; } return array_flip($cache[$key]); } function well_forum_alias_cache() { global $conf; $key = 'forum-alias-cache'; static $cache = array(); // 用静态变量只能在当前 request 生命周期缓存,跨进程需要再加一层缓存:redis/memcached/xcache/apc if (isset($cache[$key])) return $cache[$key]; if ('mysql' == $conf['cache']['type']) { $arr = well_forum_alias(); } else { $arr = cache_get($key); if (NULL === $arr) { $arr = well_forum_alias(); !empty($arr) AND cache_set($key, $arr); } } $cache[$key] = empty($arr) ? '' : $arr; return $cache[$key]; } ?>javascript - Sum values in JSON array response - Stack Overflow
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javascript - Sum values in JSON array response - Stack Overflow

programmeradmin10浏览0评论

I have a JSON string from an API response which looks like this:

{ "legend_size": 1,
  "data": {
    "series": [ "2013-05-01", "2013-05-02" ],
    "values": {
        "Sign Up": {
            "2013-05-05": 10,
            "2013-05-04": 10
         }
     }
  }
}

I'd like to sum the values in the "Sign Up" Object (10 + 10). The challenge I am having is that the key's are unique and most of the posts demonstrating how to do something like this show examples where it is just an array of values or the keys are consistent (ie - every key is "value").

Should I be attempting to use the Series array to loop through the Sign Up Object?

I have a JSON string from an API response which looks like this:

{ "legend_size": 1,
  "data": {
    "series": [ "2013-05-01", "2013-05-02" ],
    "values": {
        "Sign Up": {
            "2013-05-05": 10,
            "2013-05-04": 10
         }
     }
  }
}

I'd like to sum the values in the "Sign Up" Object (10 + 10). The challenge I am having is that the key's are unique and most of the posts demonstrating how to do something like this show examples where it is just an array of values or the keys are consistent (ie - every key is "value").

Should I be attempting to use the Series array to loop through the Sign Up Object?

Share Improve this question asked Jun 10, 2013 at 1:51 nielsfogtnielsfogt 471 gold badge1 silver badge7 bronze badges 1
  • forgot to mention, my first step in trying to solve this was to use JSON.parse(string); to put it in to a JS Object. Not sure if that is necessary. – nielsfogt Commented Jun 10, 2013 at 1:53
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2 Answers 2

Reset to default 4

Assuming you've already got your data parsed into an object, you can use a for loop like this:

var json = {
    "legend_size": 1,
    "data": {
        "series": [ "2013-05-01", "2013-05-02" ],
        "values": {
            "Sign Up": {
                "2013-05-05": 10,
                "2013-05-04": 10
            }
        }
    }
};
var sum = 0;
for (x in json.data.values['Sign Up']) {
    sum += json.data.values['Sign Up'][x];
}

Basically, we navigate through the json data to get the the actual data that we want... which is the 'Sign Up' object. Then we use a for/in loop to loop through all the keys that that object has, and add up the values.

After you've parsed it, here's a way to arrive at the sum by using Array.prototype.reduce.

var vals = object.data.values["Sign Up"];

var result = Object.keys(vals)
                   .reduce(function(sum, key) {
                       return sum + vals[key]
                   }, 0);

The .reduce() and .keys() methods will need shims for IE8 and lower.

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