keys - nodef/extra-array GitHub Wiki

Obtain all indices.

Alternatives: ikeys, keys. Similar: keys, values, entries.

function keys(x)
// x: an array

const xarray = require('extra-array');

var x = [1, 2, 3];
xarray.keys(x);
// → [ 0, 1, 2 ]

References

• Array.keys() : MDN Web Docs