0 - 255 : /^((\d)|([1-9]\d)|(1\d{2})|(2[0-4]\d)|(25[0-5]))$/
0 - 511:
0 - 1023:
0 - 2047:
0 - 4095:
收錄日期: 2021-04-25 13:57:47
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20151216143213AAy0Ra5