Get first letter of each word in a string, in JavaScript

Question

How would you go around to collect the first letter of each word in a string, as in to receive an abbreviation?

Input: "Java Script Object

Answer 1

To add to the great examples, you could do it like this in ES6

const x = "Java Script Object Notation".split(' ').map(x => x[0]).join('');
console.log(x);  // JSON

and this works too but please ignore it, I went a bit nuts here :-)

const [j,s,o,n] = "Java Script Object Notation".split(' ').map(x => x[0]);
console.log(`${j}${s}${o}${n}`);