Finds index of largest value. [:running:] [:vhs:] [:package:] [:moon:] [:ledger:]
> Alternatives: [max], [maxIndex].<br>
> Similar: [min], [max], [range].<br>
> This is part of package [extra-array].

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

```javascript
array.maxIndex(x, [fc], [fm]);
// x:  an array
// fc: compare function (a, b)
// fm: map function (v, i, x)
```

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

var x = [1, 2, -3, -4];
array.maxIndex(x);
// 1        ^

array.maxIndex(x, (a, b) => Math.abs(a) - Math.abs(b));
// 3                ^

array.maxIndex(x, null, v => Math.abs(v));
// 3                ^
```

### references

- [Math.max: MDN web docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/max)

[max]: https://github.com/nodef/extra-array/wiki/max
[maxIndex]: https://github.com/nodef/extra-array/wiki/maxIndex
[min]: https://github.com/nodef/extra-array/wiki/min
[range]: https://github.com/nodef/extra-array/wiki/range
[:running:]: https://npm.runkit.com/@extra-array/max-index
[:package:]: https://www.npmjs.com/package/@extra-array/max-index
[:moon:]: https://www.npmjs.com/package/@extra-array/max-index.min
[:ledger:]: https://unpkg.com/@extra-array/max-index/
[:vhs:]: https://asciinema.org/a/332096