使用RegEx筛选可变长度的数字序列吗? [英] Use RegEx to filter for a variable length numeric series?

问题描述

我只知道如何使用RegEx这样的\ d {4}来过滤固定长度的数字序列.但这不是我想要的，因为要检查的序列可以有不同的长度.
您能给我尽可能多的解决方案吗?
非常感谢您！

I know only the how to filter for a fixed length numeric series using RegEx like this \d{4} . But that''s not I want because the series to be checked can have a various length.
Could you please give me as many solutions as possible?
Thank you very much!

推荐答案

Medhi是正确的-

Medhi is right -

\d*

可以工作-但是，我建议

will work - however, I would suggest

\d+

，而不是因为它至少需要一位数字才能匹配(\ d *将匹配"A12"，因为这三个匹配项:NULL，"12"，NULL-\ d +将匹配只找到"12").

如果要使用Regexes，请获取 Expresso [

instead as it requires a minimum of one digit in order to match (\d* will match "A12" as three matches: NULL, "12", NULL - \d+ will only find the "12").

If you are going to use Regexes, then get a copy of Expresso [^] - it''s free, and it examines and generates Regular expressions.

使用以下命令获取尽可能多的数字:

Use the following for getting as many digits as there are :

\d*

我建​​议 \ d + (至少一位)

但是，如果您想获取科学数字，请执行以下操作:
[-+]?[0-9] * \.?[0-9] +([eE] [-+]?[0-9] +)?

在这里测试:
http://www.regular-expressions.info/javascriptexample.html [

I suggest \d+ (at least one digit)

but if you want to capture scientific numbers :
[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?

test it here :
http://www.regular-expressions.info/javascriptexample.html[^]

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