JavaScript Length
length is a property, not a method — it reports how many UTF-16 code units a string contains. For plain ASCII text this equals the visible character count.
Syntax
str.lengthExamples
| Input | Arguments | Output |
|---|---|---|
| "hello" | — | 5 |
| "😀" | — | 2 |
| ↳ Emoji count as 2 UTF-16 units. | ||
Try it live
Type your input and see Length transform it instantly.
Want to go further? Chain Length with other functions in the visual Playground — pipe one output into the next and watch your data transform.