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Dev MaxxingBeginnerWeb Foundations60 sec
Web browser
A web browser is a program that sends HTTP requests, receives responses, and renders the returned HTML, CSS, and JavaScript into an interactive page.
Prerequisite: HTTP response
What matters
Because different browsers can interpret code slightly differently, understanding that the browser is doing active rendering work explains why cross-browser testing matters.
Example
A browser requests a page's HTML, then separately requests the CSS and JavaScript files it references, assembling all three into what you see and interact with.
Common misconception
A web browser does not just display raw HTML text; it actively parses, lays out, and executes code to build the interactive page you see.
Recall question
What three types of files does a browser typically combine to render a page?
Keywords and related concepts
web browserrenderingHTML parsinghttp response