6. How do you compare Object and Map?

Comparison: Object vs Map in JavaScript

Both Object and Map are used to store key-value pairs, but they have key differences in functionality, performance, and usability.

Examples

1. Using an Object

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let obj = { name: "Alice", age: 25 };
console.log(obj.name); // Alice
console.log(Object.keys(obj)); // ["name", "age"]

2. Using a Map

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let map = new Map();
map.set("name", "Alice");
map.set("age", 25);
console.log(map.get("name")); // Alice
console.log([...map.keys()]); // ["name", "age"]

3. Keys in Map can be any type

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let objKey = { id: 1 };
let map = new Map();
map.set(objKey, "Object as Key");
console.log(map.get(objKey)); // "Object as Key"

When to Use What?

• Use Object when you need a simple key-value store and don’t need advanced operations.
• Use Map when you need fast lookups, ordering, and diverse key types.

Would you like performance benchmarks between the two? 🚀