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    ParentNode

    » ParentNode

    ParentNode 接口包含了只能对有子节点的节点(Node)对象有效的方法。

    ParentNode 是一个原始接口,不能够创建这种类型的对象;它在 ElementDocumentDocumentFragment 对象上被实现。

     

    属性

    ParentNode.children Read only
    Returns a live HTMLCollection containing all objects of type Element that are children of this ParentNode.
    ParentNode.firstElementChild Read only
    Returns the Element that is the first child of this ParentNode, or null if there is none.
    ParentNode.lastElementChild Read only
    Returns the Element that is the last child of this ParentNode, or null if there is none.
    ParentNode.childElementCount Read only
    Returns an unsigned long giving the amount of children that the object has.

    方法

    There is no inherited or specific and implemented methods.

    规范

    Specification Status Comment
    DOM
    ParentNode.firstElementChild
    Living Standard Splitted the ElementTraversal interface in ChildNode and ParentNode. The firstElementChild, lastElementChild, and childElementCount properties are now defined on the latter.
    The Document and DocumentFragment implemented the new interfaces.
    Added the children property.
    Added the append() and prepend() methods.
    Element Traversal Specification
    ElementTraversal
    '
    Recommendation Added the initial definition of its properties to the ElementTraversal pure interface and use it on Element.

    浏览器兼容性

    Help improve compatibility tables by filling out this 11 question survey.

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
    Basic support (on Element) 1.0 3.5 (1.9.1) 9.0 [1] 10.0 4.0
    Support on Document and DocumentFragment 29.0 25.0 (25.0) Not supported 16.0 Not supported
    append() and prepend() Not supported Not supported Not supported Not supported Not supported
    Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
    Basic support (on Element) (Yes) 1.0 (1.9.1) (Yes) (Yes) (Yes)
    Support on Document and DocumentFragment (Yes) 25.0 (25.0) Not supported 16.0 Not supported
    append() and prepend() Not supported Not supported Not supported Not supported Not supported

    [1] Internet Explorer 6, 7 and 8 supported it, but erroneously returns Comment nodes as part of the results.

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