Joins values together.
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> Similar: [concat], [join].

> This is part of package [extra-array].

[extra-array]: https://www.npmjs.com/package/extra-array

<br>

```javascript
array.join(x, [sep]);
// x:   an array
// sep: separator (,)
```

```javascript
const array = require("extra-array");

var x = [1, 2];
array.join(x);
// "1,2"

array.join(x, " : ");
// "1 : 2"
```

<br>
<br>


## References

- [Array.prototype.join: MDN web docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/join)
- [_.join: lodash](https://lodash.com/docs/4.17.15#join)

[concat]: https://github.com/nodef/extra-array/wiki/concat
[join]: https://github.com/nodef/extra-array/wiki/join