This method compiles an XPathExpression which can then be used for (repeated) evaluations.
You must call this method on the same document that you run the expression against.
This method compiles an XPathExpression which can then be used for (repeated) evaluations.
You must call this method on the same document that you run the expression against.
js
createExpression(xpathText, namespaceURLMapper)
xpathTextA string which is the XPath expression to be compiled.
namespaceURLMapperA function which maps a namespace prefix to a namespace URL (or null if none needed).
js
const xpathExpr = document.createExpression("//div"); const xpathResult = xpathExpr.evaluate(document); // returns an XPathResult object const nodeContext = document.querySelector("nav"); // Re-using the XPathExpression "xpathExpr" const otherResult = xpathExpr.evaluate(nodeContext); // returns an XPathResult object
| Desktop | Mobile | |||||||||||
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| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
createExpression |
1 | 12 | 1 | No | ≤12.1 | 3 | 3 | 18 | 4 | ≤12.1 | 1 | 1.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/Document/createExpression