有人可以帮助我使用正则表达式,我们可以从一系列数字中排除某些数字.
目前,^([1-9] [0] [0-9])$是配置的正则表达式.现在,如果我想从中排除一些数字/一个数字(501,504),那么正则表达式将如何显示.
解决方法
更详细地描述
in this answer,您可以使用以下正则表达式与“负面先行”命令？！：
^((?!501|504)[0-9]*)$
你可以看到正在执行的正则表达式&这里解释：https://regex101.com/r/mL0eG4/1
/^((?!501|504)[0-9]*)$/mg
- ^ assert position at start of a line
- 1st Capturing group ((?!501|504)[0-9]*)
- (?!501|504) Negative Lookahead – Assert that it is impossible to match the regex below
- 1st Alternative: 501
- 501 matches the characters 501 literally
- 2nd Alternative: 504
- 504 matches the characters 504 literally
- [0-9]* match a single character present in the list below
- Quantifier: * Between zero and unlimited times,as many times as possible,giving back as needed [greedy]
- 0-9 a single character in the range between 0 and 9
- $assert position at end of a line
- m modifier: multi-line. Causes ^ and $to match the begin/end of each line (not only begin/end of string)
- g modifier: global. All matches (don’t return on first match)
