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 - How to check if form field is touched and empty in Angular - Stack Overflow

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    javascript - How to check if form field is touched and empty in Angular - Stack Overflow

    programmeradmin3浏览0评论

    I want to warn the user if the form field is touched and left empty. I can check if the empty field is touched with $pristine. But if I preload form data from $scope, $pristine doesn't work. Also, I don't want to use required parameter, I only want to inject warning-style with ng-class.

    <div ng-class="{'has-warning': !form.name.$pristine}">
  <input type="text" name="name" ng-model="people.name">
</div>

    I want to warn the user if the form field is touched and left empty. I can check if the empty field is touched with $pristine. But if I preload form data from $scope, $pristine doesn't work. Also, I don't want to use required parameter, I only want to inject warning-style with ng-class.

    <div ng-class="{'has-warning': !form.name.$pristine}">
  <input type="text" name="name" ng-model="people.name">
</div>
    • javascript
    • angularjs
    Share Improve this question asked May 9, 2015 at 13:14 PekkaPekka 9992 gold badges12 silver badges22 bronze badges 2
    • seems like what you are describing is required so why don't you want to use it? A css warning display won't validate the field itself – charlietfl Commented May 9, 2015 at 13:42
    • 1 I want to validate the form with required but this field is not necessary and I only want to warn the user. – Pekka Commented May 9, 2015 at 17:28
    Add a ment  | 

    3 Answers 3

    Reset to default 5

    There are several state properties set on the ngModel described here. You may want to consider using form.name.$dirty or form.name.$touched instead.

    edit

    Try using:

    ng-class="{'has-warning': form.name.$touched && people.name.length === 0}"

    You can try using ngFocus:

    Specify custom behavior on focus event.

    https://docs.angularjs/api/ng/directive/ngFocus

    <div ng-class="{'has-warning': !form.name.isValid}">
  <input type="text" name="name" ng-model="people.name" ng-focus="form.name.isValid = people.name ? true : false">
</div>

    I would suggest to use : 

    form.name.$touched && form.name.$invalid

    it should work

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