How could I select specific elements from a array?

Question

Using this characters array, print to the console every character which name begins with 'M'. Don't use any kind of loop, yet. Just print to console each name separately.

        var filmCharacters =[

        ['Vito', 'Michael', 'Sonny', 'Freddo'],

        ['Mia', 'Vincent', 'Jules', 'Butch'], 

        ['Bella', 'Edward', 'Jacob', 'Carlisle'],

        ['James', 'M', 'Moneypenny', 'Felix']

];

Answer 1

You can achieve this by using the reduce on the outer array and then filtering the inner array.

After filtering you can join them back together with the current values

> filmCharacters.reduce((acc, curr) => [...acc, ...curr.filter(x => x.startsWith('M'))], [])
[ 'Michael', 'Mia', 'M', 'Moneypenny' ]