The join() method joins all elements of an array into a string. This method has the same algorithm as Array.prototype.join(). TypedArray is one of the typed array types here.


typedarray.join([separator = ',']);


Optional. Specifies a string to separate each element. The separator is converted to a string if necessary. If omitted, the typed array elements are separated with a comma (",").

Return value

A string with all array elements joined.


var uint8 = new Uint8Array([1,2,3]);
uint8.join();      // '1,2,3'
uint8.join(' / '); // '1 / 2 / 3'
uint8.join('');    // '123'


Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'TypedArray.prototype.join' in that specification.
Standard Initial definition.
ECMAScript 2017 Draft (ECMA-262)
The definition of 'TypedArray.prototype.join' in that specification.

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) (Yes) 37 (37) No support No support No support
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support No support No support 37.0 (37) No support No support No support

See also

Document Tags and Contributors

 Contributors to this page: David_Gilbertson, eduardoboucas, fscholz
 Last updated by: David_Gilbertson,