JavaScript Replace with incrementation

Question

I use .replace(/([0-9])/, '$1' + 1); for string for replace number to number + 1, but doesn't work, I know it's string and integer, but how to this in JS?

that would evaluate as .replace(/([0-9])/, '$11'); which is probably not what you want, you'd need to use a function to perform the replacement that you're after. — zzzzBov
– zzzzBov, Commented Oct 4, 2013 at 18:16

SLaks · Accepted Answer · 2013-10-04 18:16:01Z

4

You cannot perform math inside a replacement string.

Instead, you need to pass a callback function:

.replace(/0-9/, function(m) { return parseInt(m, 10) + 1; })

answered Oct 4, 2013 at 18:16

SLaks

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1 Comment

zzzzBov Over a year ago

/\d/ to be even more concise, not sure if OP would want the g flag on there either.

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