te')); return $arr; } /* 遍历用户所有主题 * @param $uid 用户ID * @param int $page 页数 * @param int $pagesize 每页记录条数 * @param bool $desc 排序方式 TRUE降序 FALSE升序 * @param string $key 返回的数组用那一列的值作为 key * @param array $col 查询哪些列 */ function thread_tid_find_by_uid($uid, $page = 1, $pagesize = 1000, $desc = TRUE, $key = 'tid', $col = array()) { if (empty($uid)) return array(); $orderby = TRUE == $desc ? -1 : 1; $arr = thread_tid__find($cond = array('uid' => $uid), array('tid' => $orderby), $page, $pagesize, $key, $col); return $arr; } // 遍历栏目下tid 支持数组 $fid = array(1,2,3) function thread_tid_find_by_fid($fid, $page = 1, $pagesize = 1000, $desc = TRUE) { if (empty($fid)) return array(); $orderby = TRUE == $desc ? -1 : 1; $arr = thread_tid__find($cond = array('fid' => $fid), array('tid' => $orderby), $page, $pagesize, 'tid', array('tid', 'verify_date')); return $arr; } function thread_tid_delete($tid) { if (empty($tid)) return FALSE; $r = thread_tid__delete(array('tid' => $tid)); return $r; } function thread_tid_count() { $n = thread_tid__count(); return $n; } // 统计用户主题数 大数量下严谨使用非主键统计 function thread_uid_count($uid) { $n = thread_tid__count(array('uid' => $uid)); return $n; } // 统计栏目主题数 大数量下严谨使用非主键统计 function thread_fid_count($fid) { $n = thread_tid__count(array('fid' => $fid)); return $n; } ?>Javascript if else statement to hide and show div - Stack Overflow

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    Javascript if else statement to hide and show div - Stack Overflow

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    Please refer to the following codes :

    <div id="message-1" onclick="javascript:showresponddiv(this.id)>
</div>
<div id="respond-1" style="display:none;">
</div>
<div id="message-2" onclick="javascript:showresponddiv(this.id)>
</div>
<div id="respond-2" style="display:none;">
</div>

<script type="text/javascript">
function showresponddiv(messagedivid){
    var responddivid = messagedivid.replace("message-", "respond-");
    if (document.getElementById(responddivid).style.display=="none"){
        document.getElementById(responddivid).style.display="inline";
    } else {
        document.getElementById(responddivid).style.display="none";
    }
}
</script>

    The codes above already success make the respond div appear when user click on message div. The respond div will disappear when user click on message div again. Now my question is how to make the respond div of 1st message disappear when user click on 2nd message to display the respond div of 2nd message?

    Please refer to the following codes :

    <div id="message-1" onclick="javascript:showresponddiv(this.id)>
</div>
<div id="respond-1" style="display:none;">
</div>
<div id="message-2" onclick="javascript:showresponddiv(this.id)>
</div>
<div id="respond-2" style="display:none;">
</div>

<script type="text/javascript">
function showresponddiv(messagedivid){
    var responddivid = messagedivid.replace("message-", "respond-");
    if (document.getElementById(responddivid).style.display=="none"){
        document.getElementById(responddivid).style.display="inline";
    } else {
        document.getElementById(responddivid).style.display="none";
    }
}
</script>

    The codes above already success make the respond div appear when user click on message div. The respond div will disappear when user click on message div again. Now my question is how to make the respond div of 1st message disappear when user click on 2nd message to display the respond div of 2nd message?

    • javascript
    Share Improve this question asked Mar 30, 2011 at 9:36 zac1987zac1987 2,7779 gold badges47 silver badges62 bronze badges
    Add a ment  | 

    2 Answers 2

    Reset to default 6

    You should give the "respond" divs a mon class:

    <div id="respond-1" class="response' style="display:none;"></div>

    Then you can get all divs by using getElementsByTagName, pare the class and hide them on a match:

    function hideAllResponses() {
    var divs = document.getElementsByTagName('div');
    for(var i = divs.length; i-- ;) {
        var div = divs[i];
        if(div.className === 'response') {
            div.style.display = 'none';
        }
    }
}

    We cannot use getElementsByClassName, because this method is not supported by IE8 and below. But of course this method can be extended to make use of it if it is supported (same for querySelectorAll). This is left as an exercise for the reader.

    Further notes:

    • Adding javascript: to the click handler is syntactically not wrong but totally unnecessary. Just do:

      onclick="showresponddiv(this.id)"

    • If you have to do a lot of DOM manipulation of this kind, you should have a look at a library such as jQuery which greatly simplify such tasks.

    Update: If always only one response is shown and you are worried about speed, then store a reference to opened one:

    var current = null;

function showresponddiv(messagedivid){
    var id = messagedivid.replace("message-", "respond-"),
        div = document.getElementById(id);

    // hide previous one
    if(current && current !== div) {
        current.style.display =  'none';
    }   

    if (div.style.display=="none"){
        div.style.display="inline";
        current = div;
    } 
    else {
        div.style.display="none";
    }
}

    Edit: Fixed logic. See a DEMO.

    You can add some class to all divs with id="respond-"

    e.g 

    <div id="respond-1" class="classname" style="display:none;"></div>
<div id="respond-2" class="classname" style="display:none;"></div>

    Now at first row of your function "showresponddiv()" you should find all divs with class "classname" and hide them.

    With jQuery it is simple code:

    $(".classname").hide();

    jQuery - is a Javascript Library that helps you to easy manipulate with DOM and provides cross-browser patibility.

    Also you can look to Sizzle - it is a JavaScript CSS selector engine used by jQuery for selecting DOM elements

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