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

I think what you're looking for is the acronym of a supplied string.

var str = "Java Script Object Notation";
var matches = str.match(/\b(\w)/g); // ['J','S','O','N']
var acronym = matches.join(''); // JSON

console.log(acronym)

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Note: this will fail for hyphenated/apostrophe'd words Help-me I'm Dieing will be HmImD. If that's not what you want, the split on space, grab first letter approach might be what you want.

Here's a quick example of that:

let str = "Java Script Object Notation";
let acronym = str.split(/\s/).reduce((response,word)=> response+=word.slice(0,1),'')

console.log(acronym);