TypedArray.prototype.join() - JavaScript | MDN
Try it
const uint8 = new Uint8Array([10, 20, 30, 40, 50]);
console.log(uint8.join());
// Expected output: "10,20,30,40,50"
console.log(uint8.join(""));
// Expected output: "1020304050"
console.log(uint8.join("-"));
// Expected output: "10-20-30-40-50"
Syntax
Parameters
separatorOptional-
A string to separate each pair of adjacent elements of the typed array. If omitted, the typed array elements are separated with a comma (",").
Return value
A string with all typed array elements joined. If array.length is 0, the empty string is returned.
Description
See Array.prototype.join() for more details. This method is not generic and can only be called on typed array instances.
Examples
Using join()
js
const uint8 = new Uint8Array([1, 2, 3]);
uint8.join(); // '1,2,3'
uint8.join(" / "); // '1 / 2 / 3'
uint8.join(""); // '123'
Specifications
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-%typedarray%.prototype.join |