CSS Selector
Web ScrapingDefinition
A CSS selector is a pattern used to select and target specific HTML elements on a web page. In web scraping, selectors identify exactly which data to extract from a page's structure.
How It Relates to CrawlForge
CSS selectors are the primary way to tell a scraper which elements to extract. For example, ".product-price" targets elements with the class "product-price", while "h1.title" targets h1 elements with the "title" class. CrawlForge tools like scrape_structured accept CSS selectors to pinpoint exactly the data you need.
Using precise selectors is key to building reliable scraping pipelines. CrawlForge supports the full range of CSS selector syntax, making it possible to target deeply nested or dynamically generated elements.
Related CrawlForge Tools
Related Terms
XPath
XPath (XML Path Language) is a query language for selecting nodes from an XML or HTML document. It provides a more powerful and flexible way to navigate document trees than CSS selectors alone.
DOM Parsing
DOM parsing is the process of converting raw HTML into a structured Document Object Model tree. This tree representation allows programs to navigate and extract specific elements from a web page.
HTML Parsing
HTML parsing is the process of analyzing HTML markup to extract its structure and content. Parsers convert raw HTML strings into navigable tree structures that programs can query and manipulate.
Structured Data
Structured data is information organized in a predefined format that makes it easy for machines to parse and understand. On the web, it typically refers to schema.org markup embedded in HTML pages.
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