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{"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"What are default parameters in JavaScript?","acceptedAnswer":{"@type":"Answer","text":"Default parameters allow you to set fallback values when arguments are not provided or are undefined. Example: function greet(name = \"Guest\") {}. If no argument is passed, name will be \"Guest\"."}},{"@type":"Question","name":"What is the rest parameter in JavaScript?","acceptedAnswer":{"@type":"Answer","text":"The rest parameter (...args) collects all remaining arguments into an array. It must be the last parameter. Example: function sum(...numbers) {} can accept any number of arguments."}},{"@type":"Question","name":"What is the difference between parameters and arguments?","acceptedAnswer":{"@type":"Answer","text":"Parameters are the variable names in the function definition. Arguments are the actual values passed when calling the function. Example: function add(a, b) {} - a and b are parameters; add(2, 3) - 2 and 3 are arguments."}},{"@type":"Question","name":"Can I destructure objects in function parameters?","acceptedAnswer":{"@type":"Answer","text":"Yes! You can destructure objects and arrays directly in the parameter list. Example: function greet({ name, age }) {} extracts name and age from the passed object."}}]}