JS Practice — Built-in Objects

String.prototype.slice() — omit end to end-of-string

📖 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() — Omitting End

If you omit the second argument, .slice() goes to the end of the string.

Challenge: Implement fromIndex(str, n) that returns everything from index n onwards.

fromIndex('hello world', 6) // → 'world'
fromIndex('abcdef', 3)      // → 'def'

💡 Hints (1)

• `str.slice(n)` without a second argument is equivalent to `str.slice(n, str.length)`.