regex for matching all characters in the string any where

Question

I need a regex for matching all characters in the string. But it is not matter where that characters.

EG - Input array - [a, b, c] Following words should match

abc
axbxc
cybxbxca

But should not match following. Because these words has not all input charters.

axbxyz
bxba

Answer 1

You need a regexp like ^(?=.*a)(?=.*b)..., which you can build dynamically from the input:

const inputArray = ['a', 'b', 'c'];

let re = RegExp('^' + inputArray.map(x => '(?=.*' + x + ')').join(''))

const words = [
    'abc',
    'axbxc',
    'cybxbxca',
    'axbxyz',
    'bxba',
];

console.log(words.map(w => [w, re.test(w)]))

If the input can contain regex special symbols, don't forget to escape them properly.