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{"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"What is an object in JavaScript?","acceptedAnswer":{"@type":"Answer","text":"An object in JavaScript is a collection of key-value pairs where keys are strings (or Symbols) and values can be any data type. Objects are used to store related data and functionality together, making them fundamental to JavaScript programming."}},{"@type":"Question","name":"How do you create an object in JavaScript?","acceptedAnswer":{"@type":"Answer","text":"You can create objects using object literal syntax (const obj = {}), the new Object() constructor, Object.create(), or constructor functions/classes. Object literal syntax is the most common and concise method."}},{"@type":"Question","name":"What is the difference between dot notation and bracket notation?","acceptedAnswer":{"@type":"Answer","text":"Dot notation (obj.property) is cleaner but requires valid identifier names. Bracket notation (obj[\"property\"]) allows dynamic property names, spaces, and special characters in keys. Use bracket notation when the property name is stored in a variable."}},{"@type":"Question","name":"How do you loop through object properties?","acceptedAnswer":{"@type":"Answer","text":"You can loop through object properties using for...in loop, Object.keys() for an array of keys, Object.values() for an array of values, or Object.entries() for an array of [key, value] pairs."}},{"@type":"Question","name":"What is object destructuring?","acceptedAnswer":{"@type":"Answer","text":"Object destructuring is an ES6 feature that allows you to extract properties from objects into variables. For example: const { name, age } = person; extracts name and age properties into separate variables."}}]}