how replace a value of cookie in cookie string using regular expression in javascript [duplicate]

Question

i have a cookie string like this 'user=sravan;XSRF-TOKEN=1212143;session=random' i need to check for the XSRD-TOKEN in the cookie string, if we have the XSRF-TOKEN in the string then need to replace the value with 'test'

expected new string is 'user=sravan;XSRF-TOKEN=test;session=random'

i tried this (?<=XSRF-TOKEN).*$ but it is selecting the entire string after XSRF-TOKEN=

Titus · Accepted Answer · 2019-05-30 19:26:57Z

2

You could use (?<=XSRF-TOKEN=)([^;]+), example:

const str = 'user=sravan;XSRF-TOKEN=1212143;session=random';
const processed = str.replace(/(?<=XSRF-TOKEN=)([^;]+)/, "test");
console.log(processed);

But a better solution will be to parse the cookies and recreate the string.

answered May 30, 2019 at 19:26

Titus

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1 Comment

sravan ganji Over a year ago

to parse the cookies we need to do lot of work it seems , and why regex is not a preferred way ?

Jotne · Accepted Answer · 2019-05-30 19:27:24Z

0

This should only only select up until ;

(?<=XSRF-TOKEN)[^;]+

Or if you only like to select whats after = to ;

(?<=XSRF-TOKEN=)[^;]+

'user=sravan;XSRF-TOKEN=1212143;session=random'

answered May 30, 2019 at 19:27

Jotne

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