NodeIterator.whatToShow - Web APIs 编辑

The NodeIterator.whatToShow read-only property represents an unsigned integer representing a bitmask signifying what types of nodes should be returned by the NodeIterator.

Syntax

var nodeTypes = nodeIterator.whatToShow;

The values that can be combined to form the bitmask are:

Example

var nodeIterator = document.createNodeIterator(
    document.body,
    NodeFilter.SHOW_ELEMENT + NodeFilter.SHOW_COMMENT + NodeFilter.SHOW_TEXT,
    { acceptNode: function(node) { return NodeFilter.FILTER_ACCEPT; } },
    false
);
if( (nodeIterator.whatToShow == NodeFilter.SHOW_ALL) ||
    (nodeIterator.whatToShow % (NodeFilter.SHOW_COMMENT*2)) >= NodeFilter.SHOW_COMMENT) {
    // nodeIterator will show comments
}

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• The interface this property belongs to: NodeIterator.