Checks if array has a key. :running: :vhs: :package: :moon: :ledger:

Similar: value, values, hasValue, searchValue. Similar: hasValue, hasPrefix, hasInfix, hasSuffix, hasSubsequence, hasPermutation. This is part of package extra-array.

This is browserified, minified version of @extra-array/has-key. It is exported as global variable array_hasKey. CDN: unpkg, jsDelivr.

array.hasKey(x, [k]);
// x: an array
// k: key?

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

var x = [10, 20, 30];
array.hasKey(x, 2);
// true

array.hasKey(x, 3);
// false

array.hasKey(x, -1);
// true

references

• Array.prototype.includes: MDN web docs
• array-tools.contains: @75lb