Bootstrap 下 required 不校验

[chenglyb]

如题，怎么解决哦！

<div class="form-group">
            <label for="newPwd" class="col-sm-2 control-label">新密码：</label>
            <div class="col-sm-10">
                <input type="password" class="form-control" name="newPwd" required>
            </div>
        </div>