mirror of
https://github.com/azure/login.git
synced 2026-06-07 07:47:07 +00:00
21 lines
782 B
Markdown
21 lines
782 B
Markdown
# Using Parsed Expressions
|
|
|
|
The `xpath.parse()` method allows pre-parsing an XPath expression and creating an XPath executor to evaluate the XPath as many times as needed.
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
#### xpath.parse(expression)
|
|
|
|
Parses the specified XPath expression and returns an `XPathEvaluator`. See the [documentation page](XPathEvaluator.md) for API details.
|
|
|
|
`expression` should be a string.
|
|
|
|
Example usage:
|
|
|
|
```js
|
|
var evaluator = xpath.parse('/book/characters');
|
|
```
|
|
|
|
|