摘要: const isNull = (obj) => obj null; const isUndefined = (obj) => typeof obj 'undefined'; const isNullOrUndefined = (obj) => isUndefined(obj) || isNull(o 阅读全文
posted @ 2025-05-09 12:39 dawn-lc 阅读(19) 评论(0) 推荐(0)
摘要: const isNull = (obj) => obj null; const isUndefined = (obj) => typeof obj 'undefined'; const isNullOrUndefined = (obj) => isUndefined(obj) || isNull(o 阅读全文
posted @ 2025-05-09 12:01 dawn-lc 阅读(8) 评论(0) 推荐(0)