Cheat sheet: JavaScript Array methods Finding Array elements: ['■', '●', '■'].includes('■') ⟼ true ['■', '●', '■'].indexOf('■') ⟼ 0 ['■', '●', '■'].lastIndexOf('■') ⟼ 2 ['■', '●', '■'].find(x => x==='■') ⟼ '■' ['■', '●', '■'].findIndex(x => x==='■') ⟼ 0