Replace substring in string using regexp

Question

I need to replace substring in string.

String is /string/otherstring?query=d78f1dbee59de41245fbf3c82b72b859ab688e30

Substring query=d78f1dbee59de41245fbf3c82b72b859ab688e30 I need to replace to query=

I want to replace it using regexp and then using string.replace. But I can't write the regexp.

/\/string\/otherstring?query=/.exec(
    '/string/otherstring?query=d78f1dbee59de41245fbf3c82b72b859ab688e30'
)

It's not working.

P.S. d78f1dbee59de41245fbf3c82b72b859ab688e30 is sha1 hash

why do you need regex for this you can directly store this in string and you can replace using string.replace — siva
– siva, Commented Jul 17, 2015 at 7:38
"/string/otherstring?query=yoursha1hash".replace(/query=yoursh1hash$/, "query="); — kittenchief
– kittenchief, Commented Jul 17, 2015 at 7:42

Avinash Raj · Accepted Answer · 2015-07-17 07:36:40Z

1

Use string.replace . You don't need to apply the exec function.

string.replace(/(\/string\/otherstring\?query=)[A-Za-z0-9]+/g, "$1")

or

Try this if you want to deal with only lowercase letters and numbers.

string.replace(/(\/string\/otherstring\?query=)[a-z\d]+/g, "$1")

answered Jul 17, 2015 at 7:36

Avinash Raj

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1 Comment

Thanks. That's what I want

Raghavendra · Accepted Answer · 2015-07-17 07:37:04Z

0

you could use like this in js

'/string/otherstring?query=d78f1dbee59de41245fbf3c82b72b859ab688e30'.replace(/.*query=/,'')

or

'/string/otherstring?query=d78f1dbee59de41245fbf3c82b72b859ab688e30'.replace(/\/string\/otherstring\?query=/,'')

answered Jul 17, 2015 at 7:37

Raghavendra

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