Remove accents and symbols not compatible with Latin base alphabet

asciiFriendlyText.js

/* 

This works by converting text to decomposed unicode form, such that the
accents are treated as separate characters. We then select the characters
we want, by means of a regex and then join the matched groups.
There are certain characters that won't work with this, such as 'ø', since
it is not an 'o' with a slash accent.

*/

function asciiFriendlyText (text) {
   return text.normalize("NFD").match(/([\u0009-\u0014\u0020-\u007E])+/g).join('')
}

// French
console.log(asciiFriendlyText('éléphant'));
console.log(asciiFriendlyText('Je suis un élève'));
// Vietnamese
console.log(asciiFriendlyText('ruộng'));
// Unsupported, since they would require different logic:
console.log(asciiFriendlyText('Æ, Ø, ß'));
console.log(asciiFriendlyText('Đà Nẵng, Quảng Nam, Quảng Ngãi, Bình Định, Phú Yên, Nha Trang'));