��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 - validate negative number in jquery with one decimal place - Stack Overflow
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javascript - validate negative number in jquery with one decimal place - Stack Overflow

programmeradmin4浏览0评论

I want to validate text field using jauery in the following manner:

1. Text field take only 0-9 with only one decimal place;and

2. If amount enter in not in negative, put the negative symbol at the begging of digits entered!

$('[name="pm"]').keyup(function() {

    //?

 });

I want to validate text field using jauery in the following manner:

1. Text field take only 0-9 with only one decimal place;and

2. If amount enter in not in negative, put the negative symbol at the begging of digits entered!

$('[name="pm"]').keyup(function() {

    //?

 });
Share Improve this question edited Jun 15, 2012 at 11:29 T.J. Crowder 1.1m200 gold badges2k silver badges1.9k bronze badges asked Jun 15, 2012 at 11:27 Shahid GhafoorShahid Ghafoor 3,10318 gold badges73 silver badges125 bronze badges 2
  • 2 This isn't a jQuery thing, it's a JavaScript thing. I've added the tag for you. – T.J. Crowder Commented Jun 15, 2012 at 11:29
  • No offense but this looks like "give me the codes" type of a question. You should consider telling us what you tried first. – Liviu T. Commented Jun 15, 2012 at 13:34
Add a ment  | 

4 Answers 4

Reset to default 6

You can validate the string via a regular expression and String#match:

if (this.value.match(/^-?\d+(?:\.\d){0,1}$/)) {
    // It's valid
}

Or more jQuery-ish (and the above doesn't support textarea reliably, just input):

if ($(this).val().match(/^-?\d+(?:\.\d){0,1}$/)) {
    // It's valid
}

(E.g., this.value => $(this).val().)

Breaking the regex down:

  • ^ - Match start of string
  • -? - A single optional - character
  • \d+ - One or more digits (0-9)
  • (?:...) - A non-capturing grouping, containing:
    • \.\d - At most one . followed by a single digit
  • {0,1} - Allow the non-capturing grouping zero or one time
  • $ - Match end of string

Note that the above rejects -.1. If you want to accept it, it gets more plex, but the link above should help.

Gratuitous live example | source

Try this piece of code.

$('[name="pm"]').keyup(function() {
   if($(this).val().indexOf('-') != 0){ 
      var val = $(this).val();
      $(this).val("-" + val);
   }
});

In case it does not work, replace this with $('[name="pm"]')

Arrangement and addition for specified solution:

From @Some_Coder Answer

1) First Do this

http://www.texotela.co.uk/code/jquery/numeric/

from playmaker answer with modification

$('[name="pm"]').keyup(function() {

   if($(this).val().indexOf('-') != 0){ 
      var val = $(this).val();
      $(this).val("-" + val);
   }


if ($(this).val() == '-') {
            $(this).val('');
        }
});

You will get the desire result !

if you use jQuery, than you can use this plugin.

http://www.texotela.co.uk/code/jquery/numeric/

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