.has()

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Содержание:

.has( selector )Возвращает: jQuery

Описание: Фильтрует набор выбранных элементов, оставляя только те, которые имеют определенных потомков.

  • Добавлен в версии: 1.4.has( selector )

    • selector
      Тип: String
      A string containing a selector expression to match elements against.

  • Добавлен в версии: 1.4.has( contained )

    • contained
      Тип: Element
      A DOM element to match elements against.

Given a jQuery object that represents a set of DOM elements, the .has() method constructs a new jQuery object from a subset of the matching elements. The supplied selector is tested against the descendants of the matching elements; the element will be included in the result if any of its descendant elements matches the selector.

Consider a page with a nested list as follows:

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2
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 <ul>
  <li>list item 1</li>
  <li>list item 2
    <ul>
      <li>list item 2-a</li>
      <li>list item 2-b</li>
    </ul>
  </li>
  <li>list item 3</li>
  <li>list item 4</li>
</ul>

We can apply this method to the set of list items as follows:

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$( "li" ).has( "ul" ).css( "background-color", "red" );

The result of this call is a red background for item 2, as it is the only <li> that has a <ul> among its descendants.

Примеры использования