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Closuresbeginner

Closures — Greeter factory

📖 Usage Example
function makeGreeter(prefix) {
  return name => `${prefix} ${name}`
}
const greetHi = makeGreeter('Hi')
greetHi('Alice')  // → 'Hi Alice'
greetHi('Bob')    // → 'Hi Bob'

The greeter factory closes over the prefix string, so each produced function always prepends the same greeting without needing extra parameters.

String Concatenation Factory

Create a factory that produces greeting functions with a custom prefix.

Challenge: Create a makeGreeter(prefix) function that returns a function. The returned function takes a name and returns a greeting string in the format "{prefix} {name}".

Example:

const greetHello = makeGreeter('Hello')
greetHello('World')   // 'Hello World'
greetHello('Alice')   // 'Hello Alice'
💡 Hints (2)
  • • Use template literals to construct the greeting string
  • • Capture the prefix in closure