Baseline Widely available
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è¯æ³createExpression(xpathText, namespaceURLMapper)
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xpathText
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namespaceURLMapper
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const xpathExpr = document.createExpression("//div");
const xpathResult = xpathExpr.evaluate(document); // è¿åä¸ä¸ª XPathResult 对象
const nodeContext = document.querySelector("nav");
// éå¤ä½¿ç¨ XPathExpression "xpathExpr"
const otherResult = xpathExpr.evaluate(nodeContext); // è¿åä¸ä¸ª XPathResult 对象
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