var text    = "Ahoy there matey";
var pattern = /(\w+) (\w+) (\w+)/i;
var result  = text.match(pattern);

console.log('Full match:', result[0]); // Ahoy there matey
console.log('Word #1:', result[1]);    // Ahoy
console.log('Word #2:', result[2]);    // there
console.log('Word #3:', result[3]);    // matey