JSFiddle - React, Tailwind, and code Playground

by DNCTrung

JavaScript

const string = "This is a [test] with space letter outside and [excluded space letter] inside.";

const matches = string.replace(/\s(?!\[.+?\])/g, "_");

console.log(matches);
/* for (const match of matches) {
  console.log(match.index);
} */