ExtractAttribute returns the value of the given attribute.

ExtractDeepText returns the text of all descendants' text nodes.

ExtractDeepText returns the text of all children's text nodes.

GetEqualMatch creates a Match function that compares the given value with the value of the extracting tag.

GetExtractorMap returns the default map to match extracting tags and extracting functions (or extractors).

GetPrefixMatch creates a Match function that checks whether the extracting tag value has the given prefix and returns a boolean result with the extracting tag value.

ValidateNotNil checks if the given o variable is nil or is a pointer that points to nil and returns [NillErr] in the true case.

get a value of an attribute ("@href", "@src").

get a text of descendants' text nodes.

extract operation to get useful data from the node.

jQuery-like selector to find the node.

get a text of children's text nodes.

Scraper is a struct that contains a method to scrape data from an HTML document ([goquery.Document]).

Extractor is a function that processes the given node and returns the valuable data in string format.

Match wraps boolean logic of matching values of extracting tags with extracting function (or extractors).