Question 1

How do I use antchfx/xpath to scrape data from HTML?

Accepted Answer

Use the htmlquery package to load HTML and execute XPath expressions; for example, to extract all links, you can query '//a/@href'. The README provides integration details and examples for each document type, making it straightforward for web scraping.

Question 2

Does antchfx/xpath fully support XPath 2.0?

Accepted Answer

No, it primarily implements XPath 1.0 with select XPath 2.0 extensions like lower-case() and string-join(). Several key XPath 2.0 functions are missing, as shown in the unsupported functions list, so it's not fully compliant.

Question 3

antchfx/xpath or encoding/xml for XML parsing in Go?

Accepted Answer

antchfx/xpath is better for complex queries using XPath expressions, while encoding/xml is ideal for simple unmarshalling into structs. Choose based on whether you need flexible navigation or structured data binding; xpath excels in data extraction scenarios.

Question 4

How can I improve performance when querying large JSON files with antchfx/xpath?

Accepted Answer

Consider caching parsed documents, using the jsonquery package's optimizations, or pre-filtering data to reduce query complexity. For very large datasets, native Go JSON parsing with encoding/json might be more efficient due to lower overhead.

Question 5

Is antchfx/xpath suitable for production use?

Accepted Answer

Yes, it has good test coverage, active maintenance as indicated by CI badges, and is widely used in web scraping and data processing. However, verify that your required XPath functions are supported and test performance for your specific workload.

xpath

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