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]; } ?>html - Trying to select nav ul li ul li in javascript - Stack Overflow

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    programmeradmin10浏览0评论

    I have tried many options, but this what I have so far and it doesnt work. 

    document.querySelectorAll('ul li').querySelectorAll('ul li').style.background = color;

document.getElementsByTagName("NAV").getElementsByTagName("UL").getElementsByTagName("LI").getElementsByTagName("UL").getElementsByTagName("LI").style.background = color;

    my html

    <nav>
    <ul id = "mainNav">
        <li><center>
            <img id = "logo" src = ".png"></center>
        </li>
        <li id = "search">

            <form name = "searchField">
                <img src = ".png"><input name = "search" type = "text" placeHolder = "" id = "search">
            </form>

        </li>
        <li><a href ="#">
            <img src = ".png" alt = "img/home.png">HOME</a>
        </li>
        <li><a href ="#">
            <img src = ".png" alt = "img/info.png">ABOUT</a>
        </li>
        <li id = "section"><a href ="#">
            <img src = ".png"alt = "img/camera.png">PHOTOGRAPHY</a>
            <ul>
                <li><a href = "/photography">San Francisco</a></li>
                <li><a href = "#">Lake Tahoe</a></li>
            </ul>
        </li>
        <li id = "section"><a href ="#">
            <img src = ".png"alt = "img/projects.png">PROJECTS</a>
            <ul>
                <li><a href = "/projects#informative">Informative</a></li>
                <li><a href = "/projects#profile">Profile</a></li>
            </ul>
        </li>
        <li id = "section"><a href ="#">
            <img src = ".png"alt = "img/contact.png">CONTACT</a>

            <ul>
                <li><a href = "" target =" _blank">Twitter</a></li>
                <li><a href = "" target =" _blank">Instagram</a></li>
                <li><a href="mailto:[email protected]" target="_top">Email</a></li>
            </ul>
        </li>
    </ul>
</nav>
            <nav>
                <ul id = "viewNav">
                    <a href = "#"><li> Some things here</li></a>
                </ul>
            </nav>

    Does anyone have an idea how to select nav ul li ul li with javascript?

    P.S. I havent learned jquery. So I want to do it with pure javascript.

    I have tried many options, but this what I have so far and it doesnt work. 

    document.querySelectorAll('ul li').querySelectorAll('ul li').style.background = color;

document.getElementsByTagName("NAV").getElementsByTagName("UL").getElementsByTagName("LI").getElementsByTagName("UL").getElementsByTagName("LI").style.background = color;

    my html

    <nav>
    <ul id = "mainNav">
        <li><center>
            <img id = "logo" src = "https://31.media.tumblr./cfc2c43f7e34ec3fcb60405fa5d4f5a5/tumblr_n9nvpjtNNW1tgkx81o1_1280.png"></center>
        </li>
        <li id = "search">

            <form name = "searchField">
                <img src = "http://31.media.tumblr./7732f8901e9c94cb94aa5cff9e11b2ae/tumblr_n8zm5cD1SL1tgkx81o1_1280.png"><input name = "search" type = "text" placeHolder = "" id = "search">
            </form>

        </li>
        <li><a href ="#">
            <img src = "https://38.media.tumblr./f319cbdb3a9bd4041fd2c6056827794b/tumblr_n9lpsfYFOB1tgkx81o3_1280.png" alt = "img/home.png">HOME</a>
        </li>
        <li><a href ="#">
            <img src = "https://31.media.tumblr./1dc400960f59fca2f738ceab516d24f4/tumblr_n9lpsfYFOB1tgkx81o4_1280.png" alt = "img/info.png">ABOUT</a>
        </li>
        <li id = "section"><a href ="#">
            <img src = "https://38.media.tumblr./11cb610a9c031eaf5bb8789cb9739717/tumblr_n9lpsfYFOB1tgkx81o1_1280.png"alt = "img/camera.png">PHOTOGRAPHY</a>
            <ul>
                <li><a href = "/photography">San Francisco</a></li>
                <li><a href = "#">Lake Tahoe</a></li>
            </ul>
        </li>
        <li id = "section"><a href ="#">
            <img src = "https://31.media.tumblr./bd112082d5c902750e78aa9d7dd817fc/tumblr_n9lpsfYFOB1tgkx81o5_1280.png"alt = "img/projects.png">PROJECTS</a>
            <ul>
                <li><a href = "/projects#informative">Informative</a></li>
                <li><a href = "/projects#profile">Profile</a></li>
            </ul>
        </li>
        <li id = "section"><a href ="#">
            <img src = "https://33.media.tumblr./e9a7f9ae946bdf2950be96f27023bb78/tumblr_n9lpsfYFOB1tgkx81o2_1280.png"alt = "img/contact.png">CONTACT</a>

            <ul>
                <li><a href = "http://www.twitter./skarchmit" target =" _blank">Twitter</a></li>
                <li><a href = "http://www.instagram./skarchmit" target =" _blank">Instagram</a></li>
                <li><a href="mailto:[email protected]" target="_top">Email</a></li>
            </ul>
        </li>
    </ul>
</nav>
            <nav>
                <ul id = "viewNav">
                    <a href = "#"><li> Some things here</li></a>
                </ul>
            </nav>

    Does anyone have an idea how to select nav ul li ul li with javascript?

    P.S. I havent learned jquery. So I want to do it with pure javascript.

    • javascript
    • html
    • css
    Share Improve this question edited Aug 13, 2014 at 21:25 Jordan Running 106k18 gold badges188 silver badges187 bronze badges asked Aug 13, 2014 at 21:18 HappyHappy 131 gold badge1 silver badge6 bronze badges 2
    • 2 What does your HTML look like? – j08691 Commented Aug 13, 2014 at 21:20
    • I want to affect multiple navs. – Happy Commented Aug 13, 2014 at 21:21
    Add a ment  | 

    4 Answers 4

    Reset to default 4

    "how to select nav ul li ul li with javascript"

    Do you mean this?

    document.querySelectorAll('nav > ul > li > ul > li');

    Note that you can remove the direct children condition > where it suits you.

    Also note that querySelectorAll returns a collection (non-live NodeList) so you must iterate over it to manipulate every elements.

       var nestedLis = document.querySelectorAll('nav > ul > li > ul > li'),
       i = 0,
       len = nestedLis.length;

   for (; i < len; i++) nestedLis[i].style.backgroundColor = 'red';

    Since most array functions can manipulate array-like objects, you can also apply [].forEach to the node list.

    [].forEach.call(nestedLis, function (li) {
    //manipulate li
});

    QuerySelectorAll return a NodeList of objects, even if there is only one.
    So you need to give the element position in the NodeList like so

    document.querySelectorAll('ul li')[0]

    For the first element.

    If you need to go trough all the elements, you'll need a loop like so

    var elems = document.querySelectorAll('ul li');

for (var i=0; i<elems.length; i++) {
    elems[i].style.background = color;
}

    This should work 

    document.querySelectorAll('NAV ul li ul li')

    Just for the sake of including the jQuery solution..

    $('nav ul li ul li')

    or add a class to your sub menus like #myID and target 

    $('#myID li')

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