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{"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"What is console.log in JavaScript?","acceptedAnswer":{"@type":"Answer","text":"console.log() outputs messages to the browser console. It accepts any number of arguments and is the most common debugging tool in JavaScript. Open DevTools (F12) to see console output."}},{"@type":"Question","name":"How do I view console output in a browser?","acceptedAnswer":{"@type":"Answer","text":"Press F12 or right-click and select \"Inspect\" to open DevTools, then click the \"Console\" tab. In PlayCode, the console output appears in the Console panel automatically."}},{"@type":"Question","name":"What is the difference between console.log and console.error?","acceptedAnswer":{"@type":"Answer","text":"console.log() outputs regular messages, while console.error() outputs error messages with red styling and a stack trace. Use console.error() for errors and console.warn() for warnings."}},{"@type":"Question","name":"How do I format console output in JavaScript?","acceptedAnswer":{"@type":"Answer","text":"Use string substitution (%s, %d, %o) or template literals. For styled output, use %c with CSS. console.table() formats arrays and objects as tables. console.group() creates collapsible groups."}}]}