Javascript 如何使正则表达式不区分大小写?

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时间:2020-08-23 18:39:31  来源:igfitidea点击:

How to make regex case-insensitive?

javascriptregexcase-insensitive

提问by Nir

I have this javascript code but when i send this: asd.JPG the regex fails to me..

我有这个 javascript 代码,但是当我发送这个代码时:asd.JPG 正则表达式对我来说失败了..

if (data.match(/([^\/\]+)\.(jpg|jpeg|gif|png|tiff|tif)$/i))
     return { filename: RegExp., ext: RegExp. };
else
     return { filename: "invalid file type", ext: null };

So I want that the regex looks at the extension as case-insensitive. I tried this but it fails:

所以我希望正则表达式将扩展视为不区分大小写。我试过这个,但它失败了:

data.match(/([^\/\]+)\.(?i)(jpg|jpeg|gif|png|tiff|tif)$/i)

Any Ideas?

有任何想法吗?

回答by T.J. Crowder

The iflag you have on the end (/.../i) should be doing it.

最后的i标志 ( /.../i) 应该这样做。

(CW because let's face it, one shouldn't earn rep for this sort of thing... :-) )

(CW 因为让我们面对现实吧,这种事情不应该赢得代表...... :-) )