Use global defaults

Javascript part

let pgn = "1. e4 e5 2. Nf3 (2. f4 d5 3. exd5 e4) 2... Nc6 3. Bc4 Nf6";
    const PgnBaseDefaults = { locale: 'fr', width: '400px', pieceStyle: 'alpha' }
    PGNV.pgnView('board1', { pgn: pgn});
    PGNV.pgnView('board2', {pgn: pgn, locale: 'de'});
    PGNV.pgnView('board3', {pgn: pgn, locale: 'en', pieceStyle: 'merida'});
    PGNV.pgnView('board4', {pgn: pgn, width: '300px'});

HTML part

<div id="board1"></div><div id="board2"></div><div id="board3"></div><div id="board4"></div>

See the back link to the original examples page.