[removed] Split a string into array matching parameters

Question

I have a string that has numbers and math operators (+,x,-, /) mixed in it

\'12+345x6/789\'

Answer 1

If you are unconcerned with whitespace, all you need is

'12+345x6/78-9'.match(/\d+|[\+-\/x]/g);

which splits the string into numbers and the +, -, \, and x tokens.

'use strict';
const tokens = '12+345x6/78-9'.match(/\d+|[\+-\/x]/g);

console.log(tokens);

To handle whitespace, consider

'12+3 45 x6/78-9'.match(/\d|\d[\s\d]\d|[\+-\/x]/g);

which splits the string into numbers (optionally allowing whitespace as a digit separator within a single number) and +, -, \, and x.

'use strict';
const tokens = '12+3 45 x6/78-9'.match(/\d+\s?\d+|\d+|[\+-\/x]/g);


console.log(tokens);