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 - How does one access the Node Type Constants in IE - Stack Overflow
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javascript - How does one access the Node Type Constants in IE - Stack Overflow

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I have a node that I'm note sure is an element (from calling node.previousSibling). However I am having trouble finding out the cross browser javascript way to access the Node constants shown on the MDC.

In all browsers but IE Node.ELEMENT_NODE is defined. I tried using a specific instance of node, e.g.:

e=$("#element_id")[0];
alert("ELEMENT_NODE: " + ELEMENT_NODE);

This does not work in IE either. So whats the IE way to do this? Do I just have to define the node constants myself?

I have a node that I'm note sure is an element (from calling node.previousSibling). However I am having trouble finding out the cross browser javascript way to access the Node constants shown on the MDC.

In all browsers but IE Node.ELEMENT_NODE is defined. I tried using a specific instance of node, e.g.:

e=$("#element_id")[0];
alert("ELEMENT_NODE: " + ELEMENT_NODE);

This does not work in IE either. So whats the IE way to do this? Do I just have to define the node constants myself?

Share Improve this question asked Sep 18, 2009 at 13:47 Justin DearingJustin Dearing 15k22 gold badges93 silver badges166 bronze badges
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3 Answers 3

Reset to default 6

Internet Explorer 8 and earlier don't define the node type constants, so you would have to define them yourself. Additionally, Internet Explorer 7 and earlier only support types 1 and 3.

The cleanest way to define the Node Constants [when they don't exist] is by catching the exception generated when attempting to access them.

try {
    if (Node.ELEMENT_NODE != 1) {
        throw true;
    }
}
catch(e) {
    document.Node = Node || {};
    Node.ELEMENT_NODE   = 1;
    Node.ATTRIBUTE_NODE = 2;
    Node.TEXT_NODE      = 3;
}

The throw true line only executes when Node exists, but Node.ELEMENT_NODE is not the expected value.

alert(oNode.nodeType)

and you'll get:

"1" for ELEMENT_NODE  
"2" for ATTRIBUTE_NODE  
"3" for TEXT_NODE   
"4" for CDATA_SECTION_NODE  
"5" for ENTITY_REFERENCE_NODE   
"6" for ENTITY_NODE

etc...

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