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 - Get table cell id from rowid - Stack Overflow
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javascript - Get table cell id from rowid - Stack Overflow

programmeradmin8浏览0评论

I have a table with two rows and three columns:

<table>
  <tr id='a'>
    <td id='aa'>Cell A</td>
    <td id='ab'>Cell B</td>
    <td id='ac'>Cell C</td>
  </tr>
  <tr id='b'>
    <td id='ba'>Cell A</td>
    <td id='bb'>Cell B</td>
    <td id='bc'>Cell C</td>
  </tr>
</table>

How can I get all the <td> ids under a particular <tr> using javascript or jquery?

Thanks in advance.

I have a table with two rows and three columns:

<table>
  <tr id='a'>
    <td id='aa'>Cell A</td>
    <td id='ab'>Cell B</td>
    <td id='ac'>Cell C</td>
  </tr>
  <tr id='b'>
    <td id='ba'>Cell A</td>
    <td id='bb'>Cell B</td>
    <td id='bc'>Cell C</td>
  </tr>
</table>

How can I get all the <td> ids under a particular <tr> using javascript or jquery?

Thanks in advance.

Share Improve this question asked Jan 2, 2015 at 10:16 AbhiAbhi 1062 silver badges8 bronze badges 4
  • you cannot get all td ids once you you to loop through. – Manoj Sharma Commented Jan 2, 2015 at 10:18
  • 3 Why to use ids, trs have rowIndex property, and tds have cellIndex property. – Teemu Commented Jan 2, 2015 at 10:22
  • you may use class attribute for tr and id for td Class Selector (“.class”) Selects all elements with the given class. – Akash kumar Commented Jan 2, 2015 at 10:24
  • jQuery has selectors for that. See api.jquery./category/selectors and api.jquery./child-selector – nha Commented Jan 2, 2015 at 10:27
Add a ment  | 

4 Answers 4

Reset to default 3

you should loop through all tds inside a row this code for example to get td ids from #a

$(document).ready(function(){
    $('table #a td').each(function(){
        alert($(this).attr('id'));
    });
}); 

SEE DEMO

you should loop through all tds inside a row

$(document).ready(function(){
    $('table #a td').each(function(){
        alert($(this).attr('id'));
    });
}); 

Get all IDs of <td>s under <tr id='a'> this way:

$('#a td').each(function(td){
  console.log($(this).attr('id'));  // check your console after running this
});
<script src="https://ajax.googleapis./ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
  <tr id='a'>
    <td id='aa'>Cell A</td>
    <td id='ab'>Cell B</td>
    <td id='ac'>Cell C</td>
  </tr>
  <tr id='b'>
    <td id='ba'>Cell A</td>
    <td id='bb'>Cell B</td>
    <td id='bc'>Cell C</td>
  </tr>
</table>

If you want it for the other row, just change the <tr> ID.

Learn more:

  • .each() | jQuery
  • .attr() | jQuery

You can use map() which return an array of matched id's as shown below:

var idArray = $('#a td').map(function(i,elm) {
  return elm.id;
}).get();
console.log(idArray);
<script src="https://ajax.googleapis./ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
  <tr id='a'>
    <td id='aa'>Cell A</td>
    <td id='ab'>Cell B</td>
    <td id='ac'>Cell C</td>
  </tr>
  <tr id='b'>
    <td id='ba'>Cell A</td>
    <td id='bb'>Cell B</td>
    <td id='bc'>Cell C</td>
  </tr>
</table>

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