Getting Name initials using JS

Question

I would like to extract initials from a string, like:

Name = FirstName LastName  Initials =  FL 

I can get the above result using this,

const initials = item     .FirstName     .charAt(0)     .toUpperCase() +        item     .LastName     .charAt(0)     .toUpperCase(); 

But now my requirements are changed as if name only consist of 1 word or more then 2, so in following cases how can I get initials as per my requirements,

FullName =  FU FirstName MiddleName LastName = FL 1stName 2ndName 3rdName 4thName 5thName = 15 

How can I get above initials from a string in JS?

Also now I only have item.Name string as an input

Answer 1

Why no love for regex?

Updated to support unicode characters and use ES6 features

let name = 'ÇFoo Bar 1Name too ÉLong'; let rgx = new RegExp(/(\p{L}{1})\p{L}+/, 'gu');  let initials = [...name.matchAll(rgx)] || [];  initials = (   (initials.shift()?.[1] || '') + (initials.pop()?.[1] || '') ).toUpperCase();  console.log(initials);