how to grab the first word in a sentence javascript code example

Example 1: get the first word of a string javascript

let sentence = "The big brown fox"
let word = sentence.split(" ")[0]

console.log(word) // The

Example 2: javascript get first letter of each word

var msg = "Name Surname a"
var acronym = msg.match(/\b(\w)/g).join('');

console.log(acronym)