JS Practice — Built-in Objects

String.prototype.length — spaces count toward length

📖 Usage Example

'hello'.length    // → 5
''.length         // → 0
'😀'.length       // → 2

The length property returns the number of UTF-16 code units in the string.

String.prototype.length — Spaces Count

Spaces are characters too and are counted in .length.

Challenge: Implement lengthWithSpaces(str) that returns the length including spaces.

lengthWithSpaces('hello world') // → 11

💡 Hints (1)