--- id: 5e7b9f0b0b6c005b0e76f06e title: 正则表达式 challengeType: 11 videoId: Yud_COr6pZo bilibiliIds: aid: 759422542 bvid: BV1W64y167YD cid: 376387549 dashedName: regular-expressions --- # --question-- ## --text-- 哪一个正则表达式匹配只有一个空白字符? ## --answers-- \\S --- \\s --- . --- \_ --- \\. ## --video-solution-- 2