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viewport.jquery - simple but handy jQuery plugin adding methods and CSS selectors to check if element is in certain viewport

License: MIT License

JavaScript 100.00%

viewport viewport-plugin jquery jquery-plugin pseudo-selectors element-position element-viewport javascript

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Проблема при установке через Bower

При установке вот так:

bower install jquery-viewport

Затем выполнив:

bower list

Скрипта нет в списке.

При установке так:

bower install jquery-viewport --save

В dependencies добавляется "xobotyi/jquery.viewport": "jquery-viewport#~0.2.1"

Теперь если сделать bower list, то выдает такую ошибку:

bower check-new     Checking for new versions of the project dependencies...
bower ECMDERR       Failed to execute "git ls-remote --tags --heads git://github.com/xobotyi/jquery.viewport=jquery-viewport.git", exit code of #128 fatal: remote error:    xobotyi/jquery.viewport=jquery-viewport is not a valid repository name   Email [email protected] for help

Additional error details:
fatal: remote error:
  xobotyi/jquery.viewport=jquery-viewport is not a valid repository name
  Email [email protected] for help

Возможность не передавать функции viewportTrack колбэк

Вероятно в плагине viewportTrack ориентрована на то, что бы обеспечить колбэки на скроле. Однако мой кейс показал, что плагину не обязательно обеспечивать свой нативный способ слежения за скролом (хотя это конечно полезно).

Кастомный скроллер, который я использую самостоятельно может отрабатывать на скроле и моя задача свелась только к использованию псевдоселекторов, предоставляемых плагином.

Потому считаю, что если пользователь хочет использовать только предоставляемые селекторы, то совершенно не обязательно требовать колбэк при инициализации.

(на усмотрение автора - можно свободно закрыть и забыть)

почему :in-viewport для блока срабатывает в любой части страницы?

if($('.footer').is(':in-viewport')) {
console.log('test');
}
Как только страница загружается, то это срабатывает, я уже не знаю в чем дело.

Не понимаю как это работает (или как должно работать)

Имею область 300х300, заполненую шариками
15й шарик в 15 ряду помечен как шар для отслеживания (.detected)

#base_viewport{
  height: 300px;
  width:  300px;
  overflow: scroll;
  background: lightgray;

  p{
    word-spacing: 0;
    white-space: nowrap;
  }
  span{
    height: 30px;
    width: 30px;
    line-height: 10px;

    border-radius: 30px;
    display: inline-block;

    text-align: center;
    background: yellow;
    margin-right: 10px;
    padding: 10px;
    font-size: 13px;

    &.detected{
      background: red;
    }
  }
}

    <div id="base_viewport">
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span class="detected">15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
      <p><span>1</span><span>2</span><span>3</span><span>4</span><span>5</span><span>6</span><span>7</span><span>8</span><span>9</span><span>10</span><span>11</span><span>12</span><span>13</span><span>14</span><span>15</span><span>16</span><span>17</span><span>18</span><span>19</span><span>20</span><span>21</span><span>22</span><span>23</span><span>24</span><span>25</span><span>26</span><span>27</span><span>28</span><span>29</span><span>30</span>
      </p>
    </div>

$('.detected').viewportTrack({
          forceViewport: '#base_viewport',
          tracker: function(state) {
            console.clear();

            console.log($('.detected:in-viewport'));

            console.log($('.detected:above-the-viewport'));
            console.log($('.detected:below-the-viewport'));
            console.log($('.detected:left-of-viewport'));
            console.log($('.detected:right-of-viewport'));

            console.log($('.detected:partly-above-the-viewport'));
            console.log($('.detected:partly-below-the-viewport'));
            console.log($('.detected:partly-left-of-viewport'));
            console.log($('.detected:partly-right-of-viewport'));
          }
});

Событие исполняется много раз, но значения выводимые в консоль ниразу не меняются.
true дает только 3 и 5 селекторы. Всегда.

Способ получить версию плагина из консоли

Для быстрого получения номера версии плагина из консоли хочется программный интерфейс
В исходнике даже в комментах не указана версия плагина

Правильно ли я понимаю

Мне нужно запускать подгрузку страниц при доскроливании до последнего элемента. (Фактически в самом низу списка у меня есть скрытая плашка-идентификатор и при ее видимости я хочу запускать аякс и получать очередной кусок списка)

Правильно я понимаю, что ты предлагаешь самостоятельно отслеживать событие скрола в блоке и проверять в нем видимость элемента предоставленными селекторами?

Функция viewportTrack отрабатывает у меня только один раз при инициализации.

  $('.loadMorePlz').viewportTrack (state) ->
    console.log(state)

JQ селекторы которые я попробовал ведут себя адекватно

Требование к нижней версии JQ в документации

Хотелось бы видеть в ридми нижнюю версию JQ с которой гарантированно протестирован плагин

Как узнать насколько элемент не влезает?

if ($(element).is(':partly-right-of-viewport')) {
// узнать насколько partly-right-of-viewport в пикселях
}

line 271: second argument to Function.prototype.apply must be an array

TypeError: second argument to Function.prototype.apply must be an array
callBack.apply( obj, 'inside' );

Можно ли как-то прибавить пиксели к in-viewport

Подскажите, есть задача скролить по секциям, но сверху свисает навигация в 88 пикселей, можно как то сразу прибавить 88px

var container = $(".container-scroll:in-viewport+88"),
id = container.attr('id'),
scrollNext = container.next();

NPM certificate

Привет.
Жив ли еще проект? Возникают проблемы с установкой через NPM.

npm ERR! code UNABLE_TO_VERIFY_LEAF_SIGNATURE
npm ERR! errno UNABLE_TO_VERIFY_LEAF_SIGNATURE
npm ERR! request to https://registry.npmjs.org/viewport.jquery failed, reason: unable to verify the first certificate

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