TypedArray.prototype.join()

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.

Try it

Syntax

join()
join(separator)

Parameters

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.

Examples

Using join()

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

Polyfill

Since there is no global object with the name TypedArray, polyfilling must be done on an "as needed" basis.

// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.join
if (!Uint8Array.prototype.join) {
  Object.defineProperty(Uint8Array.prototype, 'join', {
    value: Array.prototype.join
  });
}

If you need to support truly obsolete JavaScript engines that don't support Object.defineProperty, it's best not to polyfill Array.prototype methods at all, as you can't make them non-enumerable.

Specifications

Browser compatibility

Desktop Mobile Server
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet Deno Node.js
join
45
14
37
No
32
9.1
45
45
37
32
9.3
5.0
1.0
4.0.0

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/join