a = 0 b = 0 a === 0 && (a = 1,b = 2) a === 1 ? (a = 3,alert(b)) : (b = 4) a === 1 || alert(a) 相关文章： 2021-06-20 2022-12-23 2022-12-23 2022-12-23 2021-08-08