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node_modules/xpath/docs/parsed expressions.md
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node_modules/xpath/docs/parsed expressions.md
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# Using Parsed Expressions
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The `xpath.parse()` method allows pre-parsing an XPath expression and creating an XPath executor to evaluate the XPath as many times as needed.
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This can provide a performance benefit if you plan to evaluate the same XPath multiple times, because the expression only needs to be parsed once.
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This also provides access to additional features such as the use of variables and custom XPath functions, which are not available using the evaluation methods on the `xpath` object.
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#### xpath.parse(expression)
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Parses the specified XPath expression and returns an `XPathEvaluator`. See the [documentation page](XPathEvaluator.md) for API details.
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`expression` should be a string.
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Example usage:
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```js
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var evaluator = xpath.parse('/book/characters');
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```
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