Replace multiline text between two strings

Question

I need to replace old value between foo{ and }bar using Javascript regex.

foo{old}bar

This works if old is a single line:

replace(
    /(foo{).*(}bar)/,
    '$1' + 'new' + '$2'
)

I need to make it work with:

foo{old value
which takes more
than one line}bar

How should I change my regex?

Answer 1

Change your regex to,

/(foo{)[^{}]*(}bar)/

OR

/(foo{)[\s\S]*?(}bar)/

so that it would match also a newline character. [^{}]* matches any character but not of { or } , zero or more times. [\\s\\S]*? matches any space or non-space characters, zero or more times non-greedily.