XPathResult.iterateNext()
The iterateNext()
method of the
XPathResult
interface iterates over a node set result and returns the
next node from it or null
if there are no more nodes.
Syntax
var node = result.iterateNext();
Return value
The next Node
within the node set of the XPathResult
.
Exceptions
TYPE_ERR
In case XPathResult.resultType
is not
UNORDERED_NODE_ITERATOR_TYPE
or ORDERED_NODE_ITERATOR_TYPE
, an
XPathException
of type TYPE_ERR
is thrown.
INVALID_STATE_ERR
If the document is mutated since the result was returned, an
XPathException
of type INVALID_STATE_ERR
is thrown.
Example
The following example shows the use of the iterateNext()
method.
HTML
<div>XPath example</div>
<div>Tag names of the matched nodes: <output></output></div>
JavaScript
var xpath = "//div";
var result = document.evaluate(xpath, document, null, XPathResult.ANY_TYPE, null);
var node = null;
var tagNames = [];
while(node = result.iterateNext()) {
tagNames.push(node.localName);
}
document.querySelector("output").textContent = tagNames.join(", ");
Result
Specifications
Specification |
---|
DOM Standard # dom-xpathresult-iteratenext |
Browser compatibility
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