JS Practice — Built-in Objects

String.prototype.slice() — negative end

📖 Usage Example

const str = 'Hello, World!'
str.slice(7, 12)    // → 'World'
str.slice(-6, -1)   // → 'World'
str.slice(7)        // → 'World!'

Use slice() to extract a portion of a string by start and end indices, supporting negative indices.

String.prototype.slice() — Negative End

A negative end counts from the end. str.slice(0, -1) drops the last character.

Challenge: Implement dropLast(str) that removes the last character.

dropLast('hello') // → 'hell'
dropLast('ab')    // → 'a'

💡 Hints (1)