JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://unpkg.com/xregexp/xregexp-all.js"></script>

JavaScript

const regexpRule = new XRegExp(
  "^[0-9\\p{L} _.&@<>!_\\](){}\\[,\\/\\-.;#=$%:~'\"?+]+$"
);

const result = regexpRule.test("ການທົດສອບ")
console.log(result)