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 - Replace class in jQuery - Stack Overflow

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    Is there a way to acplish the following in one line?

    item.removeClass('oldClass')
item.addClass('newClass')

    Something like replaceClass ?

    Is there a way to acplish the following in one line?

    item.removeClass('oldClass')
item.addClass('newClass')

    Something like replaceClass ?

    • javascript
    • jquery
    Share Improve this question asked Jan 17, 2015 at 2:36 David542David542 110k203 gold badges566 silver badges1k bronze badges
    Add a ment  | 

    5 Answers 5

    Reset to default 11

    With no further context, I'd suggest:

    item.toggleClass('oldClass newClass');

    If, however, you really want a replaceClass() method (though I can't see what it might offer, functionally):

    (function($) {
  $.fn.replaceClass = function(classes) {
    var allClasses = classes.split(/\s+/).slice(0, 2);
    return this.each(function() {
      $(this).toggleClass(allClasses.join(' '));
    });
  };
})(jQuery);

$('div').replaceClass('oldClass newClass');
    .oldClass {
  color: #f00;
}
.newClass {
  color: #0f0;
}
    <script src="https://ajax.googleapis./ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="oldClass">This element starts with the class "oldClass"</div>
<div class="newClass">This element starts with the class "newClass"</div>

    References:

    • toggleClass().

    If you would like to try using jquery-ui

    switchClass('oldClass', 'newClass'); 

    item.removeClass('oldClass').addClass('newClass')

    $('.theclassthatstherenow').addClass('newclasswithyourstyles');
$('.theclassthatstherenow').removeClass('theclassthatstherenow');

    To do this in one line using jQuery, please use given code.

    <script src="https://ajax.googleapis./ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script>
$('.oldclass').addClass('newclass').removeClass('oldclass');
</script>

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