JS Practice — Built-in Objects

String.prototype.at() — middle character

📖 Usage Example

const str = 'Hello'
str.at(0)    // → 'H'
str.at(-1)   // → 'o'
str.at(1)    // → 'e'

Use at() to access a character by index, supporting negative indices to count from the end.

String.prototype.at() — Middle Index

Challenge: Implement middleChar(str) that returns the middle character of an odd-length string using .at().

middleChar('hello') // → 'l'
middleChar('abc')   // → 'b'

💡 Hints (1)