The XPathEvaluator
interface allows to compile and evaluate XPath expressions.
It is implemented by the Document
interface.
The XPathEvaluator
interface allows to compile and evaluate XPath expressions.
It is implemented by the Document
interface.
XPathEvaluator.createExpression()
Creates a parsed XPath expression with resolved namespaces.
XPathEvaluator.createNSResolver()
Adapts any DOM node to resolve namespaces allowing the XPath expression to be evaluated relative to the context of the node where it appeared within the document.
XPathEvaluator.evaluate()
Evaluates an XPath expression string and returns a result of the specified type if possible.
The following example shows the use of the XPathEvaluator
interface.
<div>XPath example</div> <div>Number of <div>s: <output></output></div>
var xpath = "//div"; var evaluator = new XPathEvaluator(); var expression = evaluator.createExpression(xpath); var result = expression.evaluate(document, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE); document.querySelector("output").textContent = result.snapshotLength;
Specification |
---|
DOM Standard # interface-xpathevaluator |
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
XPathEvaluator |
1
|
12
|
1
|
No
|
≤12.1
|
3
|
1
|
18
|
4
|
≤12.1
|
1
|
1.0
|
XPathEvaluator |
1
|
12
|
1
|
No
|
≤12.1
|
3
|
1
|
18
|
4
|
≤12.1
|
1
|
1.0
|
createExpression |
1
|
12
|
1
|
No
|
≤12.1
|
3
|
1
|
18
|
4
|
≤12.1
|
1
|
1.0
|
createNSResolver |
1
|
12
|
1
|
No
|
≤12.1
|
3
|
1
|
18
|
4
|
≤12.1
|
1
|
1.0
|
evaluate |
1
|
12
|
1
|
No
|
≤12.1
|
3
|
1
|
18
|
4
|
≤12.1
|
1
|
1.0
|
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/XPathEvaluator